... Wear-resistance and Healthy 3,High temperature resistance â… Products Information:Crystal Black Artificial Quartz Stone with good quality A. Quartz ... Surface-- 93 % pure quartz crystal, with 7 % of resins, color pigments and othersB. standard ... . 2,High temperature resistantance: The melting point of quartz crystal is top to 1300 degree centigrade, this degree is higher ...