Sophia Hirsh of Hirsh London gives expert advice on investing in colour gemstones and reveals some lesser known winners.

Copper-bearing gem tourmaline, known as Paraíba tourmaline after the location of its original discovery, is prized for its vivid blue to green color. This article explains GIA’s use of quantitative ...

A spokesperson for the US Customs and Border Protection announced the seizure of counterfeit jewellery in Kentucky, with more than 2,100 pieces of fake jewellery discovered. A shipment of more than ...