Sphene has a specific gravity of 3 50 3 54 and a hardness of 5 5 5. Sphene 7 46 carats. Bi color sphene 5 05 carats. Very slightly greyish sphene valuation report 107632 1 90ct color. The wedge shaped sphene is softer than most gemstones but flaunts a unique vivid black hue.
With a brilliant luster the sphene ranges from transparent to translucent and its tiny crystals have more fire than most diamonds. 11 43 x 11 11 x 8 04 mm. As with many gemstones color clarity and carat are the most important value factors followed by the skill and artistry shown in cutting. Refractive indices of sphene range around 1 880 2 054. 14 51 x 7 13 x 4 59 mm.
A preference exists for lighter tones especially yellows light oranges and greens which best exhibit sphene s magnificent dispersion. Unheated almost loupe clean. Chrome sphene is the most valuable type. Sphene valuation report 103186 2 10ct color. 068 medium yellowish green.
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The refractive index ri measured using a refractometer is an indication of the amount light rays are bent by a mineral. The name sphene comes from the greek word sphen meaning wedge which alludes to the formation of its crystals. Sphene is a very rare brilliant yellowish green green orange or brown gemstone with a high luster also known as titanite due to its titanium content. Very slightly brownish sphene valuation report 99657 8 70ct color. Due to its high dispersion when brilliant cut sphene can exhibit a fire similar to that of diamond.041 medium orangey yellow. 041 medium orangey yellow. The refractive index ri measured using a refractometer is an indication of the amount light rays are bent by a mineral. A preference exists for lighter tones especially yellows light oranges and greens which best exhibit sphene s magnificent dispersion. With a brilliant luster the sphene ranges from transparent to translucent and its tiny crystals have more fire than most diamonds.
Due to its high dispersion when brilliant cut sphene can exhibit a fire similar to that of diamond. Sphene has a specific gravity of 3 50 3 54 and a hardness of 5 5 5.
