metamorphic

Tumbled kiwi jasper (often sold as sesame jasper)

Trade name for a green, quartz-rich rock, commonly a mixture of quartz/chalcedony and dark mineral inclusions; not a single defined mineral species

AI-generated identification · may be incorrect

Opaque, pale sage-green with scattered dark flecks and a polished surface. Quartz-rich material is typically about 6.5–7 on the Mohs scale, with a waxy to vitreous luster; exact composition and density vary.

Identified September 28, 2026More metamorphic →

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At a glance

Common name: Tumbled kiwi jasper (often sold as sesame jasper)
Scientific name: Trade name for a green, quartz-rich rock, commonly a mixture of quartz/chalcedony and dark mineral inclusions; not a single defined mineral species
Category: metamorphic
Identified: September 28, 2026
Method: Standard

AI Estimated Value

About $2–$10 for a small tumbled stone; value depends on size, polish, and seller.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

The trade-name material is generally silica-rich rock formed through geological alteration and silicification; a precise age or formation setting cannot be determined from appearance alone.

Uses & applications

Used mainly for tumbled-stone collecting, beads, and cabochons; not generally used as a major construction or industrial stone.

Geological facts

“Kiwi jasper” is a commercial lapidary name, not a formal jasper variety, and similar-looking green stones may be sold under overlapping names.

Field identification & locations

The rounded shape and glossy finish indicate tumbling. Green groundmass with irregular dark specks is typical of material sold as kiwi jasper; definitive identification requires testing or provenance.