Illustration generated via ImageFX (Some rights reserved)
Mineral = Solid inorganic substance of natural occurrence // Sustancia sólida inorgánica de origen natural
Recommended Listening
Legends of Amethyst – EarthDate
Elsewhere on the Web
British and Exotic Mineralogy
Mineralogy Database
Lake Superior Agate
– Minnesota’s official gemstone
Wikipedia
Ametrine
Ametrin is a combination of citrine and amethyst in the same crystal. Almost all commercial ametrine is extracted from the Anahí mine in Bolivia.
Wikipedia
Wikipedia
Agate
Amethyst
Birthstone
Quartz – Citrine
Malachite – Pseudomalachite
Onyx
Talc
Vermiculite
Planeta