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Osmium (Os)
Illustrated with more than 300 color photographs
Cutting and polishing diamonds took a while to get started-- not until about the mid-1300’s-- because of diamond’s extreme hardness
Curved design for rounded jewelry surfaces
Gemstones of the World is truly the single volume that every hobbyist
Arkansas Stone – Large Photography Jewelry - Diamonds & Gems Osmium (Os)Natural Sharpening Stone for Razor Sharp Edges The jewelers trusted sharpening stone for maintaining ultra fine edges on gravers, files, and other delicate tools. Mined from the Ouachita Mountains in Arkansas, USA, this genuine natural stone offers exceptional hardness, smooth grain, and unmatched control, making it ideal for fine detail work in jewelry making, engraving, and metal artistry. Size of the stone: length 148mm x width 50mm x height 10mm
US$ 114.00
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US$ 149.00
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US$ 16.95
US$ 35.00
US$ 59.90