martindrew
 Number of posts : 372
Age : 35
Location : India
Registration date : 2011-01-13
 |  Subject: Certified Loose Diamonds  Sat Sep 29, 2012 3:27 pm | |
| Diamonds today are based on the GIA standards. Certified Loose Diamonds’ carat weight is measured by means of electronic micro balances. These measurements are taken to the fifth decimal place. Colors are graded against a set of so-called master stones, of a predetermined color and viewed under controlled lighting and against definitive backgrounds. | |
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