7.90 ct Good-looking Fancy Shape (20 x 13 mm) Multi Color Australian Koroit Boulder Opal Natural Loose Gemstone. Boulder Opal. Mohs Hardness: 5.5-6.5 Found in Australia History: Opal is a semi-transparent solidified mineral composed of silicon and water.
0.84 ct CLASSIC UNHEATED GEM / NATURAL TANZANITE – Octagon Gems Video !!
Clarity scale details No.of Pcs: 1 piece. : Greenish Blue as picture. : VVS-VS As Picture. Color may not appear as exactly as in real life due to variations between the computer monitors. Pick up is no longer available.
4.26 ct RARE! Cabochon (15X9mm)Multi Color Australian Koroit Boulder Opal
4.26 ct Unbelievable Cabochon Shape (15X9 mm) Multi Color Australian Koroit Boulder Opal Natural Loose Gemstone. Boulder Opal. Mohs Hardness: 5.5-6.5 Found in Australia History: Opal is a semi-transparent solidified mineral composed of silicon and water.
4.26 ct Superior Emerald (11.09 x 9.12 mm) Brazil Natural Color Change Fluorite
Mohs Hardness: 4 Found in China, USA, England, Switzerland, Canada, Germany, Italy & Norway History: This stone is also known as fluorspar. Usually occurs translucent to transparent in a variety of colors including yellows, greens and purples.
VINTAGE 15 WATCHMAKER’S MASCOT FLAT PIVOT DRILLS BY GROBET USA IN ORIGINAL BOXES
AN INTERNET SEARCH REVEALED THAT MASCOT DRILLS WERE MADE BY GROBET USA (ALSO KNOWN AS GROBET FILE CO. THE 4/26 SHOWN IN INK ON THE TOP OF EACH BOX LIKELY INDICATES THAT THE BOX CONTAINS DRILLS SIZES 4 THROUGH 26. ).