The event programme at Oroarezzo, from 11th to 14th May, will include an in-depth analysis of processing techniques for the jewellery and fashion accessory...
The International Gemological Institute (IGI) has introduced Light Performance Grading Reports showcasing round brilliant-cut diamonds with exceptional optical qualities. The IGI Light Performance grading...
The 101.29-carat Allnatt diamond, described as one of the world's most significant fancy vivid yellow stones, is to be auctioned at Sotheby's Geneva, with...