A report on the colour treatment process for these intensely greenish yellow to yellowish-green cultured pearls and the techniques for identifying them.
Read MoreLocated near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.
Read MoreDetermines whether blue zircon, inadvertently altered to brown by exposure to long-wave UV radiation, can be restored to its original colour through the use of incandescent light.
Read MoreExamines Jaipur’s role as a coloured stone cutting and jewellery manufacturing centre, with profiles of 17 companies and their factory, trading and retail operations.
Read MoreA look at the gemmological properties and chemical composition of this light blue to light green to green gem material, which is suitable for cabochon cutting.
Read MoreExplores statistical data and defining characteristics of gem-quality CVD synthetic diamonds examined by GIA since 2003.
Read MorePresents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.
Read MoreThis type of pink pyrope garnet, believed to have been mined in Tanzania, shows a distinct colour-change phenomenon resulting from its unique chemical composition.
Read MoreExplores the history, geology and current production of this unique source of large diamonds.
Read MoreA look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.
Read More