White Cubic Zirconia, Round 4mm, Pack of 30, PMC Safe, Sizes May Vary Slightly gemstone

Cubic Zirconia is a simulated stone with an exceptional visual likeness to diamond. Lab created from a colourless material, cubic zirconia has virtually flawless clarity and high sparkle but with the additions of oxide elements, can also be produced in a variety of colours. These round faceted CZ stones consist of a pack of 30 and are approximately 4mm in size. Cubic Zirconia has a hardness of 8.5 on the Mohs scale and a specific gravity of 5.6 - 6.0. Care: These cubic zirconia stones are suitable to be used in metal clay casting however any time cubic zirconia stones are fired, there is a chance there appearance could be altered or they could damage. The stones should not be in a kiln for longer than 2 hours or at a higher temperature than 1650°F to 899°C. Please note this is guideline only and their suitability should be tested prior to use. Cubic Zirconia can be cleaned in an ultrasonic, steam cleaner, or a soapy water mix. A slight tolerance of +/- 0.25mm should be expected with these stones and these cubic zirconia are sold in packs of 30. Round Faceted Manmade gemstone Hardness: 8.5 on the Mohs scale Precious Metal Clay safehttps://www.cooksongold.com/Gemstones/White-Cubic-Zirconia,-Round-4mm,---Pack-of-30,-PMC-Safe,-Sizes-May----Vary-Slightly-prcode-61CZ-P400?p=gs