metamorphic
Polished leopard-skin jasper (likely feldspar-rich decorative stone)
Trade name: leopard-skin jasper; appearance may also fit a feldspar-rich rock such as larvikite or gabbro
AI-generated identification · may be incorrectPolished, egg-shaped specimen with cream, gray, and dark-violet mottling. Exact hardness, mineral proportions, and crystal structure cannot be determined from the photograph; comparable feldspar-rich rocks are typically Mohs 6–7, with a vitreous to subdued polish.
Identified More metamorphic →
Explore Polished leopard-skin jasper (likely feldspar-rich decorative stone) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Polished, egg-shaped specimen with cream, gray, and dark-violet mottling. Exact hardness, mineral proportions, and crystal structure cannot be determined from the photograph; comparable feldspar-rich rocks are typically Mohs 6–7, with a vitreous to subdued polish.
Formation & geological history
The pattern suggests a coarse-grained igneous or metamorphic rock, but a photo cannot establish the identity, formation history, or age. Jasper in the strict geological sense is microcrystalline quartz, whereas this specimen appears visibly mottled and may not be jasper.
Uses & applications
Polished ornamental object, paperweight, or collectible; similar stones are used for carvings, beads, and decorative surfaces.
Geological facts
“Jasper” is often used loosely in the gemstone trade and does not always describe quartz-rich jasper geologically.
Field identification & locations
The smooth polish and contrasting mottles are visible clues, but reliable identification requires examining a fresh surface and testing mineral hardness or composition. The pictured specimen is roughly palm-sized.
More like this
