A symmetry of a diamond is a key factor to identify price and preciousness of diamond. Here, a topic is presented of diamond symmetry factors for learning about how diamond is graded by laboratory and which diamond can value for us.
This document provides an overview of diamonds, including their history, characteristics, and grading. It discusses how diamonds became desirable due to their rarity, durability, beauty, and value. It explains how diamonds are cut, including their anatomy and facets, and how this contributes to their brilliance, fire, and scintillation. The 4Cs of grading diamonds - color, clarity, cut, and carat weight - are defined. Common diamond simulants like cubic zirconium and moissanite are also outlined.
Diamonds have been treasured for centuries due to their rarity, durability, and beauty. Their sparkle comes from facets that reflect light internally and externally. Diamonds are graded on the 4 Cs - color, clarity, cut, and carat weight. Higher grades mean fewer inclusions, closer to colorless color, ideal cutting proportions, and larger size. Proper cleaning maintains a diamond's brilliance. Synthetic diamonds and simulants like cubic zirconia are available but have distinguishing characteristics. Understanding these basics empowers consumers.
Whether you're buying or selling a diamond or engagement ring, you should know: there's more to diamonds than meets the eye. In this presentation, you'll find out what makes diamonds more or less valuable, the different types of cuts, and what to look for when buying.
Sunny Diamonds- Comprehensive Guide To Diamond JewelrySunny Diamonds
The Sunny Diamonds- Comprehensive Guide To Diamond Jewelry is an all in one directory, guiding prospective customers in choosing the perfect diamond in terms of it quality, value and price
The 4 C's refer to the color, clarity, carat weight, and cut of a diamond, which determine its price. Color ranges from colorless to light yellow or fancy colored. Clarity is determined by inclusions and marks, with fewer being more valuable. Carat weight is measured in hundredths of a gram. Cut most impacts appearance and is the only subjective factor, affecting brilliance, fire, and life through its proportions, symmetry, and polish.
When you are planning on purchasing a diamond it is important that you know how diamonds are classified. There are four topics you need to become familiar with?Cut, Color, Clarity, and Carat Weight.
The four C's of diamonds - color, clarity, cut, and carat - established by the Gemological Institute of America (GIA) are the standard for evaluating and grading diamonds. Cut refers to how well a diamond is shaped to maximize brilliance, while clarity depends on the absence of inclusions. Color ranges from completely colorless to light yellow, and affects the diamond's value. Carat weight measures the diamond's size, with one carat equaling 0.2 grams. Understanding the four C's is essential for properly assessing and purchasing diamonds.
Jamie Clark Tiralla is an experienced gemologist and appraiser specializing in diamonds, gemstones, fine jewelry, and watches. She graduated from the Gemological Institute of America and has over 15 years of experience appraising and identifying jewelry. Her services include insurance replacement appraisals, estate appraisals, gemstone identification, and jewelry verification. She explains the appraisal process and differences between appraisal types, discusses factors that affect value, and provides tips for buying and selling jewelry.
This document provides an overview of diamonds, including their history, characteristics, and grading. It discusses how diamonds became desirable due to their rarity, durability, beauty, and value. It explains how diamonds are cut, including their anatomy and facets, and how this contributes to their brilliance, fire, and scintillation. The 4Cs of grading diamonds - color, clarity, cut, and carat weight - are defined. Common diamond simulants like cubic zirconium and moissanite are also outlined.
Diamonds have been treasured for centuries due to their rarity, durability, and beauty. Their sparkle comes from facets that reflect light internally and externally. Diamonds are graded on the 4 Cs - color, clarity, cut, and carat weight. Higher grades mean fewer inclusions, closer to colorless color, ideal cutting proportions, and larger size. Proper cleaning maintains a diamond's brilliance. Synthetic diamonds and simulants like cubic zirconia are available but have distinguishing characteristics. Understanding these basics empowers consumers.
Whether you're buying or selling a diamond or engagement ring, you should know: there's more to diamonds than meets the eye. In this presentation, you'll find out what makes diamonds more or less valuable, the different types of cuts, and what to look for when buying.
Sunny Diamonds- Comprehensive Guide To Diamond JewelrySunny Diamonds
The Sunny Diamonds- Comprehensive Guide To Diamond Jewelry is an all in one directory, guiding prospective customers in choosing the perfect diamond in terms of it quality, value and price
The 4 C's refer to the color, clarity, carat weight, and cut of a diamond, which determine its price. Color ranges from colorless to light yellow or fancy colored. Clarity is determined by inclusions and marks, with fewer being more valuable. Carat weight is measured in hundredths of a gram. Cut most impacts appearance and is the only subjective factor, affecting brilliance, fire, and life through its proportions, symmetry, and polish.
When you are planning on purchasing a diamond it is important that you know how diamonds are classified. There are four topics you need to become familiar with?Cut, Color, Clarity, and Carat Weight.
The four C's of diamonds - color, clarity, cut, and carat - established by the Gemological Institute of America (GIA) are the standard for evaluating and grading diamonds. Cut refers to how well a diamond is shaped to maximize brilliance, while clarity depends on the absence of inclusions. Color ranges from completely colorless to light yellow, and affects the diamond's value. Carat weight measures the diamond's size, with one carat equaling 0.2 grams. Understanding the four C's is essential for properly assessing and purchasing diamonds.
Jamie Clark Tiralla is an experienced gemologist and appraiser specializing in diamonds, gemstones, fine jewelry, and watches. She graduated from the Gemological Institute of America and has over 15 years of experience appraising and identifying jewelry. Her services include insurance replacement appraisals, estate appraisals, gemstone identification, and jewelry verification. She explains the appraisal process and differences between appraisal types, discusses factors that affect value, and provides tips for buying and selling jewelry.
The document discusses the Four C's of diamonds - cut, color, clarity, and carat weight. It provides details on grading scales for each C, including what constitutes top grades and recommendations on which grades provide the best value. For cut, ideal or very good cuts reflect most light. For color, D-F are colorless. For clarity, VS1-VS2 have minor inclusions not visible to the naked eye. And for carat weight, quality of cut is as important as weight in determining perceived size. The document advises selecting the highest grade within one's budget for the best appearance.
The 5 C's refer to the key characteristics used to evaluate diamonds: Cut, Color, Clarity, Carat, and Certification. Cut impacts sparkle and brilliance, Color ranges from colorless to light yellow, Carat measures weight in increments of 0.2 grams, Clarity examines interior flaws, and Certification from accredited laboratories verifies quality and allows comparisons. Understanding the 5 C's helps determine what matters most in a diamond and find the best value.
Choosing a jeweller in a careful manner is as important as choosing a physician, lawyer or any other professional. Start by finding a professional who is credentialed, taking note of their affiliations with professional associations and jewelry industry groups.
The document provides training information for sales associates on Pure Diamond, a diamond jewelry brand. It covers the introduction to Pure Diamond and its target markets. It then discusses the 4Cs that determine a diamond's value - cut, clarity, color, and carat weight. The document outlines Pure Diamond's product range, pricing, quality standards, and policies around displays, cleaning, packaging, and exchanges/returns. The objective is to ensure participants have complete knowledge of Pure Diamond to handle sales effectively.
The document provides an introduction and training programme for Pure Diamond brand jewelry. It discusses the brand's history and outlines its target markets. The core strengths are listed as affordable, gift-worthy jewelry in light, elegant designs. Product categories include rings, earrings, pendants, necklaces, and more. The training covers topics like the 4Cs of diamonds, quality grades, display, cleaning, and exchange policies. The objective is to fully skill participants in selling Pure Diamond jewelry and ensure they have complete product knowledge.
Raw diamonds are referred to as 'rough' or 'uncut' diamonds. To determine whether the stone is a diamond, perform a brief visual examination to exclude other gemstones.
Because diamonds are so valuable, it’s essential to have a universal grading system for comparing their quality. In the 1940s and ’50s, GIA developed the 4Cs and the GIA International Diamond Grading System™ to objectively compare and evaluate diamonds.
This document provides an overview of key factors to consider when purchasing a diamond engagement ring. It discusses that diamonds are not necessary for engagement and are a luxury purchase. While diamonds are not truly rare, supply is controlled to impact price. The tutorial then covers the "4 Cs" of diamonds - carat, clarity, color, and cut. It provides details on grading scales and considerations for each factor to help buyers evaluate diamond qualities and make informed purchasing decisions.
The document provides information about diamonds, including their formation, mining, uses, and properties. Diamonds form deep underground from carbon exposed to extreme heat and pressure over billions of years. They are mined from kimberlite pipes and can be used as gemstones or for industrial purposes. The quality and value of diamonds is determined by the four Cs: carat, clarity, color, and cut. Diamonds are the hardest natural substance.
Diamonds form deep within the earth under high temperatures and pressures. They are brought closer to the surface through volcanic eruptions, where they can eventually be mined. There are two main rock types - kimberlite and lamproite - that sometimes contain diamonds. Diamonds are evaluated based on the four Cs: color, clarity, cut, and carat weight. Treatments like irradiation, annealing, and high pressure high temperature processes can enhance a diamond's color. Disclosure of treatments and enhancements is important to maintain consumer trust. Diamonds remain popular gems due to their rarity, beauty, and enduring value.
Diamonds come in different shapes, each with their own characteristics. The document discusses the characteristics of four common diamond shapes: round, princess, emerald, and asscher. Round diamonds offer the greatest flexibility in terms of color and clarity without compromising fire or brilliance. Princess diamonds are popular for engagement rings due to their unusual cut and brilliance, though corners may show slight color variations. Emerald and asscher diamonds have rectangular facets that give them unique optical appearances, and clarity plots should be checked carefully for these shapes. Purchasers are advised to view diamond certificates closely when considering characteristics like clarity, color, and dimensions for different shapes.
The document provides an overview of different types of colored diamonds and diamond shapes. It discusses rare colored diamonds such as blue, pink, yellow, orange, green, champagne, chameleon, violet, red, grey, and black diamonds. It also profiles popular diamond cuts including the Asscher, Round Brilliant, Cushion, Emerald, Marquise, Oval, Pear, Princess, and Radiant cuts. The website offers information and guidance to help customers identify the most beautiful and desirable diamonds.
Difference Between Yellow Sapphire & Yellow Diamond9gem_us
Yellow sapphires and yellow diamonds both produce a sunny yellow hue, but they differ in origin and properties. Yellow sapphires derive their color from iron during formation, ranging from light to intense yellow sometimes with a green tint. In contrast, yellow diamonds get their color from nitrogen, and have a saturated yellow tone. While yellow sapphires have good durability, yellow diamonds are the hardest natural substance and are renowned for their exceptional brilliance when cut.
The document summarizes information about diamonds, including their classification, physical and optical properties, formation, and global distribution. Diamonds form 100 miles below the earth's surface under high pressure and temperature. The four main processes that bring diamonds to the surface are deep source eruptions, subduction zone diamonds, asteroid impacts, and diamonds formed in space. India has diamond deposits in states like Madhya Pradesh. The major sources of diamonds are kimberlite, lamproite and eclogite rocks.
Diamond color can be ranked on an alphabetical scale that range from D-Z. The diamonds graded D is considered to have a “colorless” look and can only be found in the rarest of stones. After colorless, the grading moves on to nearly colorless, faint yellow, and light yellow ending with Z on the scale. For more details contact,
www.garymichaelsfinejewelry.com
White Sapphire Stone is a natural gemstone with an excellent transparent color. White sapphires are completely colorless sapphires.
https://wa.me/919216113388
White Sapphire Stone is a natural gemstone with an excellent transparent color. White sapphires are completely colorless sapphires.
https://wa.me/919216113388
The document discusses the Four C's of diamonds - cut, color, clarity, and carat weight. It provides details on grading scales for each C, including what constitutes top grades and recommendations on which grades provide the best value. For cut, ideal or very good cuts reflect most light. For color, D-F are colorless. For clarity, VS1-VS2 have minor inclusions not visible to the naked eye. And for carat weight, quality of cut is as important as weight in determining perceived size. The document advises selecting the highest grade within one's budget for the best appearance.
The 5 C's refer to the key characteristics used to evaluate diamonds: Cut, Color, Clarity, Carat, and Certification. Cut impacts sparkle and brilliance, Color ranges from colorless to light yellow, Carat measures weight in increments of 0.2 grams, Clarity examines interior flaws, and Certification from accredited laboratories verifies quality and allows comparisons. Understanding the 5 C's helps determine what matters most in a diamond and find the best value.
Choosing a jeweller in a careful manner is as important as choosing a physician, lawyer or any other professional. Start by finding a professional who is credentialed, taking note of their affiliations with professional associations and jewelry industry groups.
The document provides training information for sales associates on Pure Diamond, a diamond jewelry brand. It covers the introduction to Pure Diamond and its target markets. It then discusses the 4Cs that determine a diamond's value - cut, clarity, color, and carat weight. The document outlines Pure Diamond's product range, pricing, quality standards, and policies around displays, cleaning, packaging, and exchanges/returns. The objective is to ensure participants have complete knowledge of Pure Diamond to handle sales effectively.
The document provides an introduction and training programme for Pure Diamond brand jewelry. It discusses the brand's history and outlines its target markets. The core strengths are listed as affordable, gift-worthy jewelry in light, elegant designs. Product categories include rings, earrings, pendants, necklaces, and more. The training covers topics like the 4Cs of diamonds, quality grades, display, cleaning, and exchange policies. The objective is to fully skill participants in selling Pure Diamond jewelry and ensure they have complete product knowledge.
Raw diamonds are referred to as 'rough' or 'uncut' diamonds. To determine whether the stone is a diamond, perform a brief visual examination to exclude other gemstones.
Because diamonds are so valuable, it’s essential to have a universal grading system for comparing their quality. In the 1940s and ’50s, GIA developed the 4Cs and the GIA International Diamond Grading System™ to objectively compare and evaluate diamonds.
This document provides an overview of key factors to consider when purchasing a diamond engagement ring. It discusses that diamonds are not necessary for engagement and are a luxury purchase. While diamonds are not truly rare, supply is controlled to impact price. The tutorial then covers the "4 Cs" of diamonds - carat, clarity, color, and cut. It provides details on grading scales and considerations for each factor to help buyers evaluate diamond qualities and make informed purchasing decisions.
The document provides information about diamonds, including their formation, mining, uses, and properties. Diamonds form deep underground from carbon exposed to extreme heat and pressure over billions of years. They are mined from kimberlite pipes and can be used as gemstones or for industrial purposes. The quality and value of diamonds is determined by the four Cs: carat, clarity, color, and cut. Diamonds are the hardest natural substance.
Diamonds form deep within the earth under high temperatures and pressures. They are brought closer to the surface through volcanic eruptions, where they can eventually be mined. There are two main rock types - kimberlite and lamproite - that sometimes contain diamonds. Diamonds are evaluated based on the four Cs: color, clarity, cut, and carat weight. Treatments like irradiation, annealing, and high pressure high temperature processes can enhance a diamond's color. Disclosure of treatments and enhancements is important to maintain consumer trust. Diamonds remain popular gems due to their rarity, beauty, and enduring value.
Diamonds come in different shapes, each with their own characteristics. The document discusses the characteristics of four common diamond shapes: round, princess, emerald, and asscher. Round diamonds offer the greatest flexibility in terms of color and clarity without compromising fire or brilliance. Princess diamonds are popular for engagement rings due to their unusual cut and brilliance, though corners may show slight color variations. Emerald and asscher diamonds have rectangular facets that give them unique optical appearances, and clarity plots should be checked carefully for these shapes. Purchasers are advised to view diamond certificates closely when considering characteristics like clarity, color, and dimensions for different shapes.
The document provides an overview of different types of colored diamonds and diamond shapes. It discusses rare colored diamonds such as blue, pink, yellow, orange, green, champagne, chameleon, violet, red, grey, and black diamonds. It also profiles popular diamond cuts including the Asscher, Round Brilliant, Cushion, Emerald, Marquise, Oval, Pear, Princess, and Radiant cuts. The website offers information and guidance to help customers identify the most beautiful and desirable diamonds.
Difference Between Yellow Sapphire & Yellow Diamond9gem_us
Yellow sapphires and yellow diamonds both produce a sunny yellow hue, but they differ in origin and properties. Yellow sapphires derive their color from iron during formation, ranging from light to intense yellow sometimes with a green tint. In contrast, yellow diamonds get their color from nitrogen, and have a saturated yellow tone. While yellow sapphires have good durability, yellow diamonds are the hardest natural substance and are renowned for their exceptional brilliance when cut.
The document summarizes information about diamonds, including their classification, physical and optical properties, formation, and global distribution. Diamonds form 100 miles below the earth's surface under high pressure and temperature. The four main processes that bring diamonds to the surface are deep source eruptions, subduction zone diamonds, asteroid impacts, and diamonds formed in space. India has diamond deposits in states like Madhya Pradesh. The major sources of diamonds are kimberlite, lamproite and eclogite rocks.
Diamond color can be ranked on an alphabetical scale that range from D-Z. The diamonds graded D is considered to have a “colorless” look and can only be found in the rarest of stones. After colorless, the grading moves on to nearly colorless, faint yellow, and light yellow ending with Z on the scale. For more details contact,
www.garymichaelsfinejewelry.com
White Sapphire Stone is a natural gemstone with an excellent transparent color. White sapphires are completely colorless sapphires.
https://wa.me/919216113388
White Sapphire Stone is a natural gemstone with an excellent transparent color. White sapphires are completely colorless sapphires.
https://wa.me/919216113388
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Training: ISO/IEC 27001 Information Security Management System - EN | PECB
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This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Physiology and chemistry of skin and pigmentation, hairs, scalp, lips and nail, Cleansing cream, Lotions, Face powders, Face packs, Lipsticks, Bath products, soaps and baby product,
Preparation and standardization of the following : Tonic, Bleaches, Dentifrices and Mouth washes & Tooth Pastes, Cosmetics for Nails.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Assessment and Planning in Educational technology.pptxKavitha Krishnan
In an education system, it is understood that assessment is only for the students, but on the other hand, the Assessment of teachers is also an important aspect of the education system that ensures teachers are providing high-quality instruction to students. The assessment process can be used to provide feedback and support for professional development, to inform decisions about teacher retention or promotion, or to evaluate teacher effectiveness for accountability purposes.
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2. What is
Symmetry in
Diamond?
Research of table, culet, girdle, facet, pavilion in diamond.
Check for alignment of cuts.
When You purchase a Certified diamond you will get
certification report of it.
Poor symmetry diamond may not good for jewelry.
3. Defects of
Diamonds
It is possibility that a diamond can have following defects in it,
Which affects its quality and genuineness.
Off-center table
Misshapen facets
Out-of-round girdle outline
Off-center culet
Wavy girdle
Crown & Pavilion misalignment
4. Grade of
Symmetry
For diamond grading , A light is passed from top of it. If
light straight reflect to eye then it is very good symmetry
diamond.
Misplacing in diamond shaping, creates light skipping.
Diamond certification laboratory check for these several
defects to grade a diamond to one of ’Excellent’, ‘Very
Good’, ‘Good’, ‘Fair’, and ‘Poor’ Symmetry .
6. VeryGood
Symmetry
• Reflects light from other side of top.
• Contains a very slight misalignment which is not recognizable.
• Low reflection compared to ‘EXCELLENT’
• Useful for low cost purchase.
7. Good
Symmetry
Contains few misalignments.
Low reflection than ’Excellent’, ‘Very Good’, Diamonds.
Costs less.
May Contain missing facet.
8. FairSymmetry
80 % of people don’t choose this grade symmetry.
We can see some Misplacement by naked eye.
Light reflection is not proper and can skip also.
9. Poor
Symmetry
• Thick Girdle, Light could not enter into diamond.
• Light skips in unwanted manner.
• Lots of defects, misalignments.
• Not recommended.