Shree Prakash Gems manufactures Cushion Shaped Tanzanite Gemstone. Shree Prakash Gems also manufactures Tanzanite gems in different shapes. Cushion Shaped Tanzanite Gemstone is a blue variety of zoisite gemstone. It is offered in trichroic colour and shows different colours when viewed in different directions. Its blue colour, which shimmers in a slightly purplish blue, is unique. It is a blue variety of zoisite gemstone. The hydrated calcium aluminium silicate miner achieves only hardness 6.5 to 7 on the Moh`s scale, and is thus not very resistant. The colour of tanzanite is most intense in sizes above ten carats.
