sedimentary

Leopard-skin jasper (likely polished jasper pebble)

Jasper, an opaque microcrystalline variety of quartz (SiO₂); exact variety cannot be confirmed from the photo

AI-generated identification · may be incorrect

Opaque, polished brown-to-black stone with cream and tan spots. Quartz hardness is about 6.5–7 Mohs; vitreous to waxy luster, no visible cleavage, and a fine-grained structure.

Identified October 13, 2026More sedimentary →

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Physical properties

Opaque, polished brown-to-black stone with cream and tan spots. Quartz hardness is about 6.5–7 Mohs; vitreous to waxy luster, no visible cleavage, and a fine-grained structure.

Formation & geological history

Jasper forms when silica-rich fluids fill or replace rock and sediment, often incorporating iron and other minerals that create patterns. Its geological age and exact source cannot be determined visually.

Uses & applications

Used for cabochons, beads, carvings, and decorative objects; this small piece appears mainly suitable for collecting or crafts.

Geological facts

“Leopard-skin jasper” is a trade name for spotted decorative stones and may refer to different materials rather than one precisely defined geological variety.

Field identification & locations

The mottled pattern and opaque, silica-rich appearance are consistent with jasper, but a photo alone cannot distinguish it reliably from other spotted lapidary stones. Common jasper sources include India, Brazil, Madagascar, and the United States.