Gemstones of the World by Walter Schumann - 5th Edition Tweezers combining the extreme practical of

combining the extreme practical of utilize with small dimensions

and stone outlines allow users to estimate diamond weight without removing the stone from its setting

and craft professionals

well laid-out and filled with great illustrations

Dimensions: 75 × 167 × 17 mm

Gemstones of the World by Walter Schumann - 5th Edition Tweezers combining the extreme practical ofNewly published in a fifth edition, this definitive guide takes the mystery out of appreciating, buying and selling gemstones. It covers everything from the romance and history of more than 1,800 gemstones to their geographic locations; scientific, physical and colour properties; and the way they are formed, structured and mined. The book also fully covers the optical features of gems light and colour, luminescence, refraction and inclusions and key