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Exceptional quality Binghamite, also known as Silkstone, cabochon from Minnesota. This specimen is from a very limited find, with only four medium-sized slabs of this material ever reaching the market. Acquired from private land in Minnesota. Dimensions: 3.6 cm x 3.3 cm x 0.4 cm, 54.5 carats, 10.9 grams. A unique piece for collectors.
| Category | Toys & Collectibles > Collectibles & Hobbies > Rocks, Fossils & Minerals |
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