Dravite vs Rubellite
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Dravite
Dravite is a magnesium-rich member of the tourmaline group, usually brown to dark brown or brownish-black and sometimes yellow, blue, or green. It is a trigonal borosilicate mineral whose type locality is near Dobrova and Dravograd in Slovenia, in the area of the Drava River; its name refers to that river. Dravite occurs in many geological environments and is used mainly as a mineral specimen, alt...
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Rubellite
Rubellite is the gemological term for a red to vivid pink variety of the mineral elbaite, which is part of the tourmaline group. Its coloration is caused by the presence of manganese impurities within the crystal structure. Gem-quality rubellite crystals are primarily sourced from pegmatite deposits in Brazil, Madagascar, Nigeria, and Afghanistan. Valued for its saturated hues and relative durabil...
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