Loose Nano crystal Sapphire Blue Dark Color 121/1# Oval shape Faceted Cut 5x7mm and 4x6mm gemstones wholesale from china supplier and manufacturer. Pictures This Color #121/1 Sapphire blue is the most popoular & best alternative color for the Synthetic Sapphire blue color stones. About the Sapphire Blue color Gemstones:Sapphire is the September birthstone and for the 5th and 45th anniversary gemstone gifts. For specific birthstone information, September birthstone, Sapphire, Sapphire comes in all colors except red! It may be colorless, a deep blue, green, golden yellow, pink, reddish-orang, and violet. The most valuable color of sapphire is referred to as "corn-flower blue;" black, grey, or green overtones to this vivid blue will reduce overall value. Blue sapphire is not as expensive as diamond, emerald, and ruby, with the exception of the rare variety called Padparadscha, an orange-pink stone, and some Pink stones. Another better alternative sapphire blue color gemstones are Corundum Blue sapphire, nano crystal Blue Sapphire stones, Lab Grown Blue sapphire gemstones. What is Nano Gemstones ? A: Nano Crystal gemstone - is the glass-ceramic material with nano sized (10⁻⁹m) crystals of Spinel in an aluminosilicate glass matrix, which is not special glass and it is not synthetic crystal...