mineral

Polished bloodstone (heliotrope) cabochon

Chalcedony, microcrystalline quartz (SiO₂), with iron-oxide inclusions; the pictured stone may be a mottled jasper–chalcedony variety

AI-generated identification · may be incorrect

Opaque, polished, multicolored red, gray, and dark green/black; vitreous to waxy luster, Mohs hardness about 6.5–7, trigonal quartz structure, and no visible cleavage. The image does not show enough detail to confirm the exact variety.

Identified October 17, 2026More mineral →

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At a glance

Common name: Polished bloodstone (heliotrope) cabochon
Scientific name: Chalcedony, microcrystalline quartz (SiO₂), with iron-oxide inclusions; the pictured stone may be a mottled jasper–chalcedony variety
Category: mineral
Identified: October 17, 2026
Method: Standard

AI Estimated Value

About $5–$30 USD for a small, ordinary polished cabochon; higher values depend on size, pattern, and verified identity.

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

Silica-rich fluids deposited microcrystalline quartz in cavities and fractures; iron oxides and other inclusions produced the colors. Such material forms in many geological settings, commonly in ancient volcanic rocks.

Uses & applications

Used for cabochons, beads, carvings, and decorative objects; chalcedony is also used in ornaments and some industrial applications.

Geological facts

Classic bloodstone is dark green chalcedony dotted with red iron-oxide spots; this specimen’s broad color patches are atypical.

Field identification & locations

Identify by its hardness, waxy-to-glassy polish, and lack of cleavage; common sources include India, Brazil, Australia, and the United States. The pictured cabochon cannot be confidently distinguished from other patterned chalcedony or jasper by appearance alone.