... soft paper or each size and color put in a clear plastic bag, and then put in reverent cartons.2. Or ... to your demandsAttentionWhen be heated directly to 600 Celsius degrees, cubic zirconia will take chenical reactions with oxygen,then become yellowWuzhou Jiji ... years of experience, we can use various materials, such as cubic zirconia, glass, spinel, and corundum, to produce gemstones. We can provide ...