Brown-to-grey and near-colourless single-crystal type IIa synthetic diamonds grown.
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Examination of a group of 14 brownish yellow, yellow and greenish yellow synthetic diamonds reveals distinctive gemmological properties.
Read MoreBoth crystal morphology and size can greatly affect the properties observed in a synthetic diamond.
Read MoreTwo historic blue diamonds, the Hope and the Wittelsbach-Graff, appeared together for the first time at the Smithsonian Institution in 2010.
Read MoreIn 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.
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