loose diamonds
 

The International Gemological Institute (I.G.I.).

I.G.I. report is not as strict as G.I.A certification. Like the E.G.L. the I.G.I. report includes the important data about pavilion and crown angles. Diamond grades rarely vary over one grade from G.I.A. Like E.G.L., I.G.I. diamond certification is lower in price. It is frequently used to certify smaller diamonds.

One should take into account that diamonds graded by E.G.L and I.G.I. must be lower in cost than diamonds with equal grading, made by G.I.A. and may not answer G.I.A.
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Diamond Prices

Diamonds pricing is a complex and elaborate process that requires the consideration of many factors. Diamond prices are mainly determined by:

  • - The cost of mining and sorting the rough diamond.
  • - The cost of cutting the loose diamond.

However there are other costs necessary to manufacture the rough stone into a ready diamond. A very important stone may be certified and graded by an independent company in accordance with the ‘Four Cs’: carat, color, clarity, and cut.

Diamond Certification

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