7.73cts Rutilated Quartz

Hardness: 7

Origin:? Brazil
Treatment:? None

Quartz is the second-most-abundant mineral in the Earth’s continental crust, after feldspar. There are many different varieties of quartz, several of which are semi-precious gemstones. Throughout the world, varieties of quartz have been, since antiquity, the most commonly used minerals in the making of jewelry and hardstone carvings