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ASymmetry in
Diamond
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.
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
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 .
Excellent
Symmetry
• Excellent symmetry diamond means not any misplacement.
• Reflects Light in straight 4 times more when passed in it.
• Rare to find.
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.
Good
Symmetry
 Contains few misalignments.
 Low reflection than ’Excellent’, ‘Very Good’, Diamonds.
 Costs less.
 May Contain missing facet.
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.
Poor
Symmetry
• Thick Girdle, Light could not enter into diamond.
• Light skips in unwanted manner.
• Lots of defects, misalignments.
• Not recommended.
Exemplary
Certificate of
diamond
symmetry
For More
https://www.ourosjewels.com/blogs/topic/diamond-
symmetry

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What is Diamonds Symmetry.pptx

  • 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 .
  • 5. Excellent Symmetry • Excellent symmetry diamond means not any misplacement. • Reflects Light in straight 4 times more when passed in it. • Rare to find.
  • 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.