Book of Donmon Teith

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

A full-colour guide for lay people and professionals about gold, platinum, palladium, silver, copper, bronze, brass, iron, titanium, niobium, aluminium, stainle

This guide helps buyers to evaluate these spectacular gems and it updates professionals on new treatments and sources of corundum and emerald. Using close-up ph

Writers, game designers, teachers, and students ~this is the book youve been waiting for! Written by storytellers for storytellers, this volume offers an entire

To help you to be a smart buyer, this book discusses in detail how colour, shape, cut, clarity, transparency, treatments and geographic origin affect the value