mineral
Dyed pink howlite (tumbled stone)
Howlite, Ca₂B₅SiO₉(OH)₅; likely dyed to imitate pink turquoise or rhodonite
AI-generated identification · may be incorrectOpaque, vivid pink with dark veining and a polished surface. Howlite is monoclinic, Mohs hardness 3.5, and typically has a white streak and vitreous-to-dull luster; dye may obscure its natural appearance.
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Physical properties
Opaque, vivid pink with dark veining and a polished surface. Howlite is monoclinic, Mohs hardness 3.5, and typically has a white streak and vitreous-to-dull luster; dye may obscure its natural appearance.
Formation & geological history
Howlite forms as a secondary borate mineral in evaporite deposits, often in arid environments. It is geologically young relative to many rocks; the pictured stone has been cut, tumbled, and likely dyed.
Uses & applications
Used for inexpensive beads, cabochons, and decorative objects; dyed stones are commonly sold as affordable turquoise substitutes.
Geological facts
Howlite’s porous texture readily accepts dye, so bright, unusually uniform colors are often artificial.
Field identification & locations
The vivid color and dark web-like markings suggest dyed howlite, though a photo cannot confirm identification. Natural howlite is found notably in California and Nova Scotia; inspect an inconspicuous area for white material beneath the color.
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