'Gemstones' is a guide to the fascinating world of precious and semi-precious crystals. As well as the naturally occurring minerals that have long been prized as gemstones, such as diamonds, emeralds and rubies, this book covers 'organic gems', including pearls, amber and coral, and synthetic gems and simulants, or imitations.
The oldest names for gemstones can be traced back to Oriental languages , Greek and Latin . Greek names especially have left their stamp on modern gem nomenclature . The meaning of old names is not always certain , especially where the ...
"Gems and Gemstones" features nearly 300 color images of cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unveiled in the new Grainger Hall of Gems at the Field Museum in Chicago.
Spinel's name is derived from the Italian word spinella (“little thorn”), from the Latin word for “thorn” (spina), which alludes to the fact that its characteristic octahedral crystals have pointed ends. Properties and characteristics: ...
Malawi Corundum, including both ruby and sapphire, some of gem quality, was reported in 1958 from Chimwadzulu Hill in the south of Malawi, Central Africa (Rutland, 1969). In 1967–68 an organization was set up to mine and market the ...
In this book, the author expounds on how they were formed, why they altered, why they became the cradles of precious gemstones, how they are categorized, and how they are now exploited by man. What initiates the growth of gemstones?
For those who prefer only natural stones, some jewelers now offer sapphire, ruby, and emerald in a wider quality ... In short, today there are more alternatives—natural gems, treated gems, synthetic gems, and imitation gems—in more ...
Designed for beginners and experienced collectors alike, these field guides make identification of individual specimens sure, simple and straightforward. Each entry has a full color illustration as well as color-coded...
Since early 1989, a gem dealer I've known for years has been calling me every few weeks to brief me on mounting mayhem in Colombia's lucrative emerald market.
Diamonds, rubies, and pearls are among the most precious stones found under the earth. Whether used as decoration or in modern medical technology, this new book will show readers how these stones are formed and how we use them.
Presents concise data on a particular gemstone's physical properties, occurrence, chemistry, availability, rarity, and market potential.