An Ametrine, also called Trystine, or when traded Bolivianite - is a quartz crystal which is a mix between a Citrine (yellow) and an...

During a Q&A, I got the most intriguing question, a question that has occupied my mind since I received it. The question was formulated...

With gemstones beauty is key, but when determining price provenance and rarity play a huge role - Golconda diamonds are a good example,...

This past week Sothebys put up a fancy vivid yellow diamond, weighing a whooping 133 CT, for auction - after a bidding war the hammer...