metamorphic

Polished tiger iron carving

Tiger iron, chiefly hematite–jasper–crocoite/goethite-rich ironstone; composition is uncertain from the image

AI-generated identification · may be incorrect

Hardness typically 5–7 Mohs; metallic to silky luster, golden-brown and black banding, opaque, with an irregular fibrous or orbicular texture. The specimen is polished and carved into an animal figure, so natural cleavage and crystal form are obscured.

Identified September 19, 2026More metamorphic →

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At a glance

Common name: Polished tiger iron carving
Scientific name: Tiger iron, chiefly hematite–jasper–crocoite/goethite-rich ironstone; composition is uncertain from the image
Category: metamorphic
Identified: September 19, 2026
Method: Standard

AI Estimated Value

Approximately $20–$150 for a small carved piece; exceptional workmanship, size, or verified rare material may bring $200–$500+.

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

Tiger iron is a banded metamorphic iron formation, commonly associated with ancient Precambrian rocks roughly 2.5–1.8 billion years old, especially in Western Australia. Its colors arise from alternating iron oxides and silica-rich jasper/chert layers.

Uses & applications

Used for ornamental carvings, cabochons, paperweights, and collector specimens rather than construction. Value depends strongly on pattern, polish, craftsmanship, and confirmed provenance.

Geological facts

The vivid gold material may reflect iron oxides such as goethite or hematite; visually similar golden-brown ironstones can be sold under trade names such as tiger iron or pietersite.

Field identification & locations

Identify it by its dense opaque body, metallic golden-brown/black fibrous banding, and lack of transparency; a streak, hardness, and specific-gravity test can distinguish it from resin or painted stone. Tiger iron is especially associated with the Pilbara region of Western Australia.