Amethyst

SiO2 - Mohs Hardness: 7. Amethyst name derives from the Greek "amethystos", which means "not drunken", as Amethyst in antiquity was thought to ward off drunkenness. The color of some Amethyst specimens from certain localities slowly fade upon prolonged exposure to light. When used as a gemstone, Amethyst is often heat treated to deepen the color, or to transform it into Citrine.
Abstract/Description: SiO2 - Mohs Hardness: 7. Amethyst name derives from the Greek "amethystos", which means "not drunken", as Amethyst in antiquity was thought to ward off drunkenness. The color of some Amethyst specimens from certain localities slowly fade upon prolonged exposure to light. When used as a gemstone, Amethyst is often heat treated to deepen the color, or to transform it into Citrine.
Subject(s): environmental sciences
Title: Amethyst.
Type of Resource: still image
Genre: natural object
Physical Form: image/jpeg
Abstract/Description: SiO2 - Mohs Hardness: 7. Amethyst name derives from the Greek "amethystos", which means "not drunken", as Amethyst in antiquity was thought to ward off drunkenness. The color of some Amethyst specimens from certain localities slowly fade upon prolonged exposure to light. When used as a gemstone, Amethyst is often heat treated to deepen the color, or to transform it into Citrine.
Identifier(s): rockminx-4-2-4 (IID)
Subject(s): environmental sciences
Held by: The University of Toledo
Location: Digital Initiatives, University of Toledo Libraries
Rights Statement: NO COPYRIGHT - UNITED STATES
Related Title: Geddes Collection.
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