No Products in the Cart
Founded in 1931, GIA's mission is to give buyers and sellers protection of gemstones by setting and maintaining the standards used to evaluate gemstone quality. ... The institute does so through research, gem identification and diamond grading services and a variety of educational programs.
Through its library and subject experts, GIA acts as a resource of gem and jewelry information for the trade, the public and media outlets.
The GIA Laboratory provides a variety of gem grading and identification reports for diamonds over .15 carats. With objectivity and expertise as its hallmarks, GIA ensures the integrity and accuracy of every report it issues. GIA tests every material submitted to determine whether it is natural or not, and discloses any treatments discovered during our examination.
The 4 “C’s” invented by GIA help determine the quality of any verified diamond.
1. CLARITY – determines if the diamond has any inclusions, how manyand which types. The range starts from IF/FL( Flowless) to I-3 (Imperfect/Included)
2. COLOR - determines the color of the diamond, less color means higher grade. This doesn’t apply to natural fancy colored diamonds. The range starts from D (colorless) to Z (light fancy)
3. CUT - the cut refers to the symmetry, proportions and polish within a diamond, also it is a measure of how a diamond’s facets interacts with light. The most popular cut is round Brilliant (with fifty-seven facets) but also Fancy cuts are valuable, like Cushion, Princess, Emerald, Oval, Marquise, Pear shape, Asscher, Radiant and Heart.
4. CARAT - Carat is the unit of measurement for the physical weight of diamonds. A metric “carat” is defined as 200 milligrams. Larger diamonds are more rare and more expensive.
