Amvik eBook Solutions

This is a full-colour guide to identifying and evaluating alexandrite, andalusite, chrysoberyl, cat's-eye, kyanite, sillimanite, common opal, fire opal, dinosau

This is volume three in a series of books that explains with close-up photos the price factors and identifying traits of unusual gems. The stones are shown not

Finally the real truth about how master jewellers, gemmologists and major auction houses value diamonds and colored gemstones.

This guide provides concise, interesting and practical details on uncommon gems that are now being used by designers to create distinctive jewelry. It also list

An in-depth, full-color guide to identifying, evaluating, buying and caring for all varieties of tourmaline as well as matrix opal, fire agate and blue chalcedo