Monosital Sapphire Blue Super Light #M472. Rough 72 gr Created Gemstone. US@GEMS Monosital Lab created. Color Sapphire Blue Super light #M472. Clarity I Absolutely same Gloss as the natural counterpart Optimal hardness (7-7,5 of Mohs scale), i.e. neither too soft no too hard Capability to be heated over 1700 degrees Celsius (i.e. wax casting) Opportunity to make stones of middle and big sizes