mineral
Dyed Howlite
Howlite (Ca2B5SiO9(OH)5)
AI-generated identification · may be incorrectMohs hardness 3.5; dyed pink with natural dark grey-to-black matrix webbing; sub-vitreous to dull luster; monoclinic crystal system.
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Physical properties
Mohs hardness 3.5; dyed pink with natural dark grey-to-black matrix webbing; sub-vitreous to dull luster; monoclinic crystal system.
Formation & geological history
Formed in evaporite deposits as nodules embedded in clay and sedimentary sequences, typically associated with arid lake bed environments.
Uses & applications
Commonly carved, tumbled, and dyed to imitate turquoise or other colorful gemstones for costume jewelry, beads, and ornamental crafts.
Geological facts
Naturally pure white or light grey, howlite is highly porous, making it one of the most widely dyed minerals in the global lapidary market.
Field identification & locations
Identified by low hardness, distinctive dark veining under artificial surface dye, and soft luster; major natural sources include California, USA, and Nova Scotia, Canada.
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
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Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
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Granite
Granite (Phaneritic intrusive igneous rock)
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