natural quartz

基本解释

Natural quartz crystal from DONGHAI, JIANG SU mostly include amethyst, smoky quartz and yellow quartz.
东海天然有色水晶主要有紫晶、烟晶、黄水晶。
The main composition of the quartz stone is selected natural quartz. It's made of 87% quartz crystal and 13% resin and annexing agent .
石英石的主要成分主要是精选的天然石英石，由87%的石英石晶体和13%的树脂和添加剂复合而成。
Melting experiments validate that the content of high temperature form water is the most important factor influencing the quality of the natural quartz.
熔制实验证明：高温水的含量是影响天然石英质量的最主要因素。