Loose nano crystal Citrine Yellow #172 Dark color Square Shape Princess Cut 6x6mm gemstones wholesale from china supplier and manufacturer. Pictures Princess cut - A princess cut loose gemstones is typically a four-sided square, brilliant-cut diamond with pointed rather than truncated ("clipped") corners. The princess cut is the second most popular cut shape for diamonds, next to a round brilliant.The face-up shape of the princess cut is square or rectangular and the profile or side-on shape is similar to that of an inverted pyramid with four beveled sides. 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 green nano crystal stones, the colour...