Titanite, calcium titanium silicate named for titanium content,occurs as translucent to transparent crystals, typically forming as flattened wedge-shaped crystals.Gem quality titanite can be found in shades of yellow, green,brown,red with resinous to adamantine luster.Faceted stones are known for pronounced dispersion or“fire.”Transparent specimens are noted for strong trichroism, typically greenish-yellow, reddish-yellow and nearly colorless, however exact shades are dependent on body…
Sphene is a rare collector stone with an unusually high refractive index and and a hardness of 5 -5.5. Because of it's high dispersion and refractive index, a well cut sphene can display stunning brilliance. Fire is the special effect due to dispersion and refers to the ability of the gemstone to draw light apart into its constituent colors. This works just like the glass prism that unfolds sunlight into the rainbow by refraction. Discover @ www.multicolour.com or #gemstones #sphene
Details about Sphene Yellow Green Facet Loose Gemstones 10 x 8 MM Cushion Shape 4.27 Carat
4.14cts VVS Yellow / Green Sphene (Titanite) (RCG51) This sphene displays stunning brilliance. The gemstone features "fire" phenomena which is a special feature of Sphene. In one direction the gem displays a canary yellow colour, in the other direction the gem jumps to life with flashes of green "fire". This gem is brilliantly cut by a skilled cutter.