2. Interesting Facts about Gemstone
In ancient times the term "Sapphire" meant all blue stones, but
usually meant Lapis Lazuli - which was considered the most
expensive stone in the world.
Diamonds are the most hardest stones.
Tourmaline s are the only gemstone which come in almost all
colour and shades. It’s called as rainbow gem also.
Amber is an organic gemstone also very lightest and softest, it is
so light it can float in to salt water.
3. Gemology
The professional course that gives you
the fastest returns.
The science of gem-materials is
gemology.
It covers all aspects of
Where & how they occur on earth,
Their physical & optical properties &
characteristics.
The techniques used in their cutting
& polishing
The instruments & methods
employed in their identification
4.
5. The Need for Gemology
The increasing number of
Man-made Imitations,
Synthetics & Treatments
make it essential for a
Systematic & Scientific
study of Gems & Diamonds.
6. Synthetic
Synthetic Gemstone has
same property as
natural gemstone, but
they are created in
laboratory.
What types of Synthetic
available in the market?
How they identified
How they manufactured
Crystalline
inclusion
Silk in
Burma
ruby
Silk with
Hexagonal
structure
7. Treatment
Enhancements or
treatments are
done on the
gemstone to
improve their
colour and clarity
What types of
Treatments are
available
How they identified
Different procedure
of treatment
8. Navratna Ruby - Manak
Coral - Moonga
Pearl - Moti
Diamond - Heera
Emerald - Panna
Yellow Sapphire - Pokhraj
Blue Sapphire - Neelam
Hessonite Garnet - Gomed
Chrysoberyl Cat’s eye - Lahsunia
9. Need……
The maximum profits
in the jewellery
industry lies in gems
& diamonds.
Therefore all those
who wish to invest /
gift / trade in gems &
diamonds not only do
they need to be aware
but also require
knowledge of Gems &
Diamonds.
10. Precious / Semi – Precious
All stones are gemstones
For export/ import purposes – terms precious &
semi-precious are used
Precious – ruby, emerald, sapphire, diamond,
Semi-precious – all others
In ancient times – the navratnas were considered
precious
IN CURRENT TIMES THERE IS NO SUCH THING!!!!!!!!!!!!!!!!
11. B. R. D…………… A Gem?
Beauty – subjective
4 C’s……+ phenomena
Durability - wearability
Rarity – natural or man made
12. ColourKey elements
In describing Color:
Hue — the precise
spectral color –red
Intensity - brightness or
vividness,
dullness or drabness of the
color
Tone - the depth of color
(light or dark)
Distribution — the even/
uneven distribution of color
24. Reward
At the end of the course – on successfully completing
the theory & practical examinations the student is
awarded an I.I.G.J. certificate.
An I.I.G.J. Programme helps students achieve a level of
knowledge which can lead them directly into the
industry.
25. Career Positions
(Academic)
Instructor for Gemmology
–Technical
Laboratory Technician or Asst.:
Mounted Jewellery Grading
Gem Testing Laboratory
Advanced Technology Lab
28. YOUR SEARCH ENDS HERE
If you are in search of a challenging / interesting career
with quick returns then the answer is
Introduction to Gemmology
- 50 SESSIONS
Gem Testing
– 10 SESSIONS
29. Introduction to Gemmology Contents
Contents:-
Nature of Gemstones,
Chemical Characters of Gemstones
Crystalline structure of Gemstones
Physical and optical characteristics of Gemstone
Identification of gemstones (practical)
Internal features of gemstones
Synthetics and treatments
Cutting and polishing of gemstones
30. Introduction to Basic Gem Testing
for Jewellery IndustryContents:-
Introduction
Transparency, Luster and sheen,
Anisotropism and Dichroism
Refractive Index
Spectroscopy – Ultra – Violet Test
Microscopy
Synthetic and Treated Gemstone
Practical Exercise
