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and not contaminated by radiation
Weight: 353
in which the ancient resin is slowly transformed into amber over millions of years
Weight: 743 grams
It has mostly the same composition as other precious opals in their mixture of water and silicon dioxide
3.5" Green Aragonite Slab from Profunda Mine, Spain DX2588 dolomite and not contaminated by radiationGreen Aragonite Slab Approx. Dimensions: 3. 5 x 2. 5 x 0. 5 inches Approx. Weight: 127 grams Locality: Profunda Mine, Crmenes, Len, Spain Includes acrylic slab stand! This slab of aragonite from the Profunda Mine has a very soothing minty green color and fibrous banding. Most polished pieces from this mine will exhibit chatoyancy from the fibrous formation of the aragonite. The Profunda Mine was an old Roman mine and was later used as a source of
