725crts mid size gemstone diaspore 2pc color change ore mineral specimen crystal. Diaspore has perfect cleavage in one direction making it a challenge to cut. It has a refractive index of 1 702 to 1 750 which lies between that of tanzanite and spinel. The exclusive gem quality transparent diaspore is found in only one small region of the entire world. Cat s eye diaspore a rare chatoyant variety is always cut en cabochon.
It has a hardness of 6 5 to 7 on the mohs scale comparable to peridot and tanzanite. The remote anatolian mountains of turkey. This phenomenal stone is so called because of its natural capacity to completely change color in different light sources. Since gem quality diaspore is extremely rare fancy shapes and calibrated gems demand very high premiums. Color change diaspore treatment.
Diaspore is a hydrated aluminum oxide colored by manganese. Gemstones over 3 carats are especially rare and command very high premiums. Diaspore is a hydrated aluminum oxide colored by manganese. It was first faceted as a gemstone in the 1980 s but has never been mined commercially until recently. 256 crts rough gemstone color change diaspore crystal mineral specimen 4 pc.
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With reasonably good hardness 6 5 to 7 on the mohs scale and good brilliance diaspore has been attracting considerable attention in the gem world. The thrilling trait is infinitely repeatable and is a completely natural occurrence. With reasonably good hardness 6 5 to 7 on the mohs scale and good brilliance diaspore has been attracting considerable attention in the gem world. With reasonably good hardness 6 5 to 7 on the mohs scale and good brilliance diaspore has been attracting considerable attention in the gem world. Diaspore is a hydrated aluminum oxide colored by manganese.With reasonably good hardness 6 5 to 7 on the mohs scale and good brilliance diaspore has been attracting considerable attention in the gem world. It has a hardness of 6 5 to 7 on the mohs scale comparable to peridot and tanzanite. 725crts mid size gemstone diaspore 2pc color change ore mineral specimen crystal.
