Rock Identifier
Gemstone-inlaid bracelet, likely lapis lazuli or dyed howlite (Unconfirmed blue cabochons; lapis lazuli is a rock composed mainly of lazurite, while howlite is Ca₂B₅SiO₉(OH)₅) — gemstone
gemstone

Gemstone-inlaid bracelet, likely lapis lazuli or dyed howlite

Unconfirmed blue cabochons; lapis lazuli is a rock composed mainly of lazurite, while howlite is Ca₂B₅SiO₉(OH)₅

AI-generated identification · may be incorrect

Polished, opaque blue-purple cabochons with gold-colored patches set in metal. The image does not show enough detail to establish hardness, crystal structure, or exact stone identity; lapis is about 5–5.5 Mohs, howlite about 3.5.

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Physical properties

Polished, opaque blue-purple cabochons with gold-colored patches set in metal. The image does not show enough detail to establish hardness, crystal structure, or exact stone identity; lapis is about 5–5.5 Mohs, howlite about 3.5.

Formation & geological history

The stones are cut and polished natural material, but their identity and geological age cannot be determined from the photo. Lapis forms in metamorphosed, silica-poor rocks; howlite forms in borate-rich evaporite settings.

Uses & applications

Primarily wearable jewelry and collectible craftwork.

Geological facts

Gold flecks can indicate pyrite in lapis, but similarly colored inclusions or surface treatments can occur in imitation stones.

Field identification & locations

A close inspection of the back, a hardness test on an inconspicuous area, and gemological testing can distinguish lapis from dyed howlite or other look-alikes. Lapis is notably sourced from Afghanistan, Chile, and Russia.