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Nature, 1998
A new purple precious ‘stone’ has entered the market, though it is in fact not a stone at all. Rather it is the intermetallic compound AuAl2, which is being set into jewellery by a South African business specializing in mineral and metallurgical technology.
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A new purple precious ‘stone’ has entered the market, though it is in fact not a stone at all. Rather it is the intermetallic compound AuAl2, which is being set into jewellery by a South African business specializing in mineral and metallurgical technology.
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Precious and Semiprecious Stones
2011Gems are found worldwide. When there is a sufficient quantity to be worked, it is termed a deposit. A deposit, as well as the location of discovery of a single find, is termed the gem occurrence. The gem cut defines the shape of a stone and determines whether it sparkles or shines.
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, 2018 The anti-money laundering framework for precious stones and metals dealers in Singapore
Journal of Money Laundering Control, 2021Vincent Ooi
exaly