Diamond is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative ...

Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as ...

Gemstone · Diamond cubic · Synthetic diamond · Material properties

The carat (ct) is a unit of mass equal to 200 mg (0.00705 oz; 0.00643 ozt), which is used for measuring gemstones and pearls. The current definition ...

A gemstone is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments. Certain rocks (such as lapis lazuli, ...

List of individual gemstones · List of gemstones by species · Category · Painite

137.02-carat (27.4 g) stone cut from a 353.9-carat (70.8 g) rough gem of the same name. Premier Rose. Princie Diamond, 34.65, pink. India. Antique cushion-cut ...

Centenary Diamond · Allnatt Diamond · Amsterdam Diamond · Carat (mass)

Understand what a carat is and what it measures with expert advice and tips from GIA professionals. Carat weight is one of the 4Cs of diamond quality from ...

Clarity is one of the four Cs of diamond grading, the others being carat, color, and cut. ... They may be crystals of a foreign material or even another diamond ...

... of engagement rings sold with a natural diamond declined 25% in the same period. Around 2016, the price of synthetic diamond gemstones (e.g., 1 carat stones) ...