Quartz is the second most abundant mineral. It’s made of a continuous framework of SiO4 silicon–oxygen tetrahedral. Pure quartz is called rock crystal or clear quartz. It is colorless and transparent or translucent. However, there are many varieties of quartz and it comes in most all colors. The biggest distinction between the types involves whether the crystals […]
H.R. Sinclair ↔ out of shadows
Seek And You Shall Find
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