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Bismutotantalite Gemstone Introduction Bismutotantalite is a rare and captivating gemstone known for its unique properties and striking appearance. It belongs to the tantalite group and is primarily composed of bismuth, tantalum, and oxygen. This gemstone is highly valued for its aesthetic appeal and metaphysical properties. Physical Properties ·         Color: Bismutotantalite typically exhibits hues ranging from dark brown to black with a metallic...