This is the first overview of Madagascan topological mineralogy in English. 
In this monograph Dr.Federico Pezzotta, a Madagascar specialist and curator of the Natural History Museum of Milan, reports on the origins, distribution and production of the minerals and gemstones of Madagascar. He guides the reader through the island's remote localities and sources some of the "world's best" mineral species.

Madagascar: A Mineral and Gemstone Paradise

Federico Pezzotta

Lapis International

Since antiquity, emerald has been one of the most highly valuated gemstones: the first known mines were those of Cleopatra in ancient Egypt. Two thousand years ago Pliny wrote, "Emerald-green is the most beautiful green of all." Leading researchers offer insight into many of the aspects of the world of emerald. What is an emerald? How does an emerald form? Where is emerald found? Worldwide localities Where are the richest deposits? Today's market sources Is it possible to determine the origin of an emerald? What seperates green beryl from emerald? How is emerald created in the lab and how can it be recognized?

extraLapis English No. 2: Emeralds of the World

Christa Behmenburg

Lawernce Conklin

Gaston Giuliani

Maximilian Glas

Patricia & Michael Gray

Gunther Grundmann

Rupert Hochleitner

Jan Kanis

Lore Kiefert

Karl Schmetzer

Dietmat Schwarz

Zak Swartz

Marisa Zachovav

Tourmaline has been cherished in Europe's royal treasuries for centuries but until relatively recently was assumed to be ruby or zircon. extraLapis English No.3 explores the world of tourmaline from its fascinating history to the most recent discoveries, while unforgettable images bring life to the story of the stone. 
Let extraLapis English No. 3 take you inside these colorful crystals and lead you to the places around the world where they are found. 
Explore such topics as: color and inclusions, history of tourmaline, electric properties and colors, phenomena and theories, new and historic finds,tourmaline mineralogy, the Kremlin's Carbuncle, research and discoveries, and localities from the Americas to Europe and Africa to Australia.

extraLapis English No. 3: Tourmaline A Gemstone Spectrum

authors, Many contributing

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