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Growing up to 7 inches in length
Its distinctive color zoning forms when trace amounts of iron in the quartz are exposed to different oxidation states and temperatures during crystal growth
Santa Cruz Department
Fine boulangerite inclusions within the fluorite add another layer of interest
Along the edges
Elegant XL Calcite on Amethyst & Goethite- Uruguay | River Walkers Minerals Vietnam quartz Growing up to 7 inchesWeight: 2932 g (6. 46 lbs) Dimensions: 9 x 6 x 5 in Locale: Artigas, Uruguay This huge cutbase is packed with contrast and unusual crystal habits. Two completely different formations of calcite share the same piece one is a large hexagonal crystal coated in sparkling black goethite druzy, while the other is a gemmy, sharply terminated calcite with delicate goethite inclusions suspended inside. Several smaller sharp calcite crystals also emerge from
