This stunning London Blue Topaz is a natural and transparent gemstone with a beautiful asterism effect. The oval-shaped gemstone measures 10mm in length and 8mm in width, with a depth of 4.8mm to 5mm. The gemstone is cut with excellent precision, and the loupe clean clarity grade ensures maximum brilliance. The gemstone is perfect for making jewelry, and the 1000 pieces included in this unit will provide ample material for your creations. The gemstone is heated and irradiated, which enhances its natural beauty. The unit is a wholesale item, and the brand is M.Y.GEMS. This gemstone is a must-have for any gemstone enthusiast or jewelry maker.