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It has been theorized that this particular variety of quartz gets its unique luster and optical clarity from the addition of Aluminum in its chemical composition
Weight: 897 grams
with the composition and color of each band determined by the specific minerals present in the solution at that point in time
800 meters above sea level and mines primarily silver
tube agate exhibits a hardness of 6
5" Polish Flint Slab DX771 sphere stand It has been theorized thatPolish Flint Slab Approx. Dimensions: 5 x 4 x 0. 5 inches Approx. Weight: 179 grams Locality: Sandomierz, Poland Includes acrylic slab stand! This beautiful slab display has been cut from a Polish flint nodule. It has a full polish on the front and has natural edges from the nodule on top and bottom. Polish Flint is known for its incredibly beautiful banding. It forms in concretions, or large nodules, in Jurassic limestone from about 160 million years
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