Quartz - magical quartz!
We all LOVE quartz. But it was fascinating for me to learn about the chemistry of this fascinating crystal!
Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. There are many different varieties of quartz, several of which are semi-precious gemstones. Our own captive mine has amazingly pure form of quartz. We are also lucky to have exotic colours of quartz - e.g., red, black, smokey, etc.
The crystal itself is so beautiful that it is no wonder that since antiquity, varieties of quartz have been the most commonly used minerals in the making of jewellery and hard-stone carvings, especially in Eurasia.