Yellow Aventurin Pyramid
Aventurine is a variety of Quartz characterized by bright inclusions of Mica or other minerals that give a shimmering or glistening effect to the stone, referred to as aventurescence, especially notable when tumbled or polished. Its name is derived from the Italian a ventura orall’avventura, meaning “by chance,” and refers to the Italian glass from the 1700s, produced when a worker accidentally dropped metal filings into a vat of melting glass. Once cooled, the result was pleasing with its randomly spaced iridescent sparkles, and it was used to make jewelry and other items. The name Aventurine was later given to the natural stone which looked like the industrial product.
It is mostly translucent and often banded, but an overabundance of an included mineral may render it opaque. The color of Green Aventurine comes from Fushite particles within the Quartz, while shades of red, brown and orange are attributed to Hematite or Goethite inclusions.