The Dresden Green diamond is a "body color" green diamond; that is, the color is uniform throughout. Diamonds with green "skins" or scattered green patches (radiation stains) are …

Illustrates the GIA Cut grades and their relative position in the GIA Diamond Cut Grading System. Available for standard round brilliant cut diamonds in the D-to-Z color range and Flawless-to-I …

huge rough diamond known as the Cullinan was found a century ago, when the British Empire was at the apex of its power. Its discovery, telegraphed around the world, also brought fame to …

Today, diamond production appears to be limited to the now relatively large Victory No. 1 open-pit mine (figure 3). The nearby treatment plant processes about 120 tons of ore, yielding 100-150 …

The diamond-carrying sediments are mixtures of clay, sand, silt, gravel, and angular or rounded pebbles; they are often found in horizontal bands or layers, with their contents washed down …

Diamond type classification is based on the presence or absence of nitro-gen and boron impurities and their configurations in the diamond lattice. These sche-matic diagrams illustrate …

This carbon phase diagram illustrates the diamond-graphite stability field (defined by the dashed red equilibrium line) and the plastic yield limit of diamond (solid blue line).

The most critical stage in diamond manufacturing, marking the diamond for sawing or cleaving, requires a complex decision-making process to optimize the value of the finished stones.

Diamond is a much more compact form of carbon, with a density of 3.52 g/cm3, 56% higher than the density of graphite. Great confining pressure is required to stabilize the denser …

As creator of the 4Cs and the International Diamond Grading System,TM GIA is the global authority and trusted source for unbiased diamond quality assessment. This guide is devoted …