Zaozhuang Ruizhong Gem Crystal Material Co., Ltd.  

Product Name: Synthetic Ruby Rough for Jewel and Industry Model NO.: 8ZH-4 Suitable for: Unisex Style: European and American Grade: High Color: Red Type: Material Classification: Ruby Color: Red: Hardness : 9 Density: 3.98g/cm3: Length: 50-80mm Shape : Half Boules: Material : Al2O3 Trademark: polaris Transport Package: Carton Specification: international standard Origin: China HS Code: 71049019 Product Description Materials: Aluminum oxide, man-made corundum and synthetic rubyVarious sizes and grades are availableSuitable for ornaments and industry , such as ring and necklace nad jewel bearing