Gem-Quality Synthetic Diamonds Grown by a Chemical Vapour Deposition (CVD) Method
Brown-to-grey and near-colourless single-crystal type IIa synthetic diamonds grown.
An Update on Sumitomo Gem-Quality Synthetic Diamonds
Both crystal morphology and size can greatly affect the properties observed in a synthetic diamond.
Recent Discoveries of Large Diamonds in Trinity County, California
In the early 1980s four diamonds were recovered from the stream gravels of Hayfork Creek in Trinity County, California; all four are of industrial grade and all have an interesting feature in common.
The Gemmological Properties of the De Beers Gem-Quality Synthetic Diamonds
Examination of a group of 14 brownish yellow, yellow and greenish yellow synthetic diamonds reveals distinctive gemmological properties.
The Wittelsbach-Graff and Hope Diamonds: not cut from the same rough
Two historic blue diamonds, the Hope and the Wittelsbach-Graff, appeared together for the first time at the Smithsonian Institution in 2010.