gemstone
Howlite, Hematite, and Black Onyx Bracelet
Ca2B5SiO9(OH)5, Fe2O3, and SiO2
AI-generated identification · may be incorrectComposed of beads with varying hardness: Howlite (3.5), Hematite (5.5-6.5), and Onyx (7). Display white with dark veins, metallic silver-gray, and opaque black lusters.
- Hardness
- Howlite (3
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Physical properties
Composed of beads with varying hardness: Howlite (3.5), Hematite (5.5-6.5), and Onyx (7). Display white with dark veins, metallic silver-gray, and opaque black lusters.
Formation & geological history
Formed in evaporite deposits (howlite), hydrothermal veins or sedimentary iron ores (hematite), and cryptocrystalline quartz cavities in volcanic rocks (onyx).
Uses & applications
Widely used in beaded jewelry, metaphysical practices, and decorative accessories.
Geological facts
Howlite is frequently dyed blue to imitate turquoise, often marketed as turquenite. Hematite has a striking reddish-brown streak despite its metallic silver appearance.
Field identification & locations
Easily identified by the characteristic spiderweb matrix on white howlite beads, metallic luster of hematite, and uniform dark color of onyx.
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