Large crystals found in geodes and other rocks are relatively rare. Pink ChalcedonyA ... Historically, gems have been divided into precious and semiprecious classes. There are a number of ...

Those seeking precious gemstones can skip a trip to Bvlgari ... luxury designers in a forthcoming auction. The “incredibly rare” historical artifacts, most of which are actually wearable ...

An ultra-rare diamond worth an estimated $20m is coming to Abu Dhabi. The 10.03-carat precious gem is on a world tour, with ...