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This includes both an ER-11 1/4" collet and a collet nut so it can be easily swapped back and fourth with the 6mm collet that comes with the handpiece
These are specimens of zincite
Beryl is one of the most classic gem families but it turns out it is rather difficult to grow in the lab
aka 'Star Wars' program
It is an excellent gem
Gem Vials: Natural Kornerupine, Garnet, and Tunduru stones, mixed Popout Stones and Pearls Size:Large Pearl (probably mostly imitation) Vial, ~40 ct of pearls This includes both an ER-11These are vials containing various natural stones as well as mixes of lab natural stones and pearls from scrapped jewelry. Kornerupine: This was a rare Tucson find! Kornerupine is an obscure gem, most commonly found in a dark bottle green, but a deposit in Tanzania produces vanadium and chromium bearing crystals. Vanadium gives a rich brilliant green which is pretty nice, and chromium turns them into a bizarre trichroic blue green purple gem. These