Loose nano crystal Topaz Blue Color Heart shape Faceted Cut 4x4mm gemstones wholesale from china supplier and manufacturer. Pictures What Is Blue Topaz? Blue is the most popular Topaz Blue color in today’s jewelry marketplace. It is sold in a broad range of blue colors, starting from a pale blue with a light tone and saturation, all the way to a deep blue with a moderate to dark tone and saturation. Blue topaz is very attractive, inexpensive, and a favorite color of the jewelry customer. These characteristics drive the popularity of blue topaz 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 or mineral - it is their hybrid. This composite material has unique physical and optical properties: Color (homogeneous and even), Density (3-3.3g/cm³), Luster (RI=1.61-1.64); Melting temperature (more than 1650 C°) and high thermal shock resistance make this material ideally compatible with the wax-casting technology. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald...