gemstone

Yellow-orange tumbled stone, likely carnelian or orange jasper

Cryptocrystalline quartz (chalcedony), SiO₂; possibly iron-rich jasper

AI-generated identification · may be incorrect

Opaque to translucent honey-orange body with a dull to waxy luster and rounded, tumbled surfaces. Chalcedony is hardness 6.5–7, trigonal/microcrystalline, with no visible cleavage; jasper has similar hardness but is more opaque and impurity-rich.

Identified September 10, 2026More gemstone →

Explore Yellow-orange tumbled stone, likely carnelian or orange jasper in the encyclopedia →

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Physical properties

Formation & geological history

Typically forms when silica-rich groundwater fills cavities or fractures, later acquiring orange-red color from iron oxides. Such material commonly formed in volcanic or sedimentary environments over millions of years; the photograph cannot establish a precise age.

Uses & applications

Used for beads, cabochons, carvings, decorative stone, and inexpensive collector specimens; jasper is also used for ornamental objects.

Geological facts

Carnelian is orange chalcedony, while jasper is opaque silica containing abundant mineral inclusions. Heat treatment can intensify orange-red coloration.

Field identification & locations

Check for glassy conchoidal fracture, very fine texture, and hardness sufficient to scratch ordinary glass; a streak test should be white, not orange. Common sources include Brazil, India, Madagascar, Uruguay, and the western United States.