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Width: 180 mm
meteorites and the early solar system and gemstones and their treatments
The magnifications are 2x
It also provides information and color photos on gemstones
Exotic Gems, Volume 3 Drills Width: 180 mmExotic Gems, Volume 3: How to Identify, Evaluate, Select and Care For Matrix Opal, Fire Agate , Blue Chalcedony, Rubellite, Indicolite, Paraiba and Other Tourmalines Third in a series of books that explains with color photos the price factors and identifying traits of unusual gems. The stones are shown not only loose but also in jewelry, in the rough and as beads. Fun facts, historical anecdotes, geographic sources, gem treatment information, cutting
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