gemstone

Polished bloodstone (heliotrope), possibly brecciated jasper

Chalcedony (microcrystalline quartz, SiO₂) with iron-oxide inclusions; exact identification is uncertain from the image

AI-generated identification · may be incorrect

Opaque, dark green-brown body with reddish iron-oxide patches and a glossy vitreous-to-waxy polish; quartz hardness is about Mohs 6.5–7, with no visible cleavage and cryptocrystalline structure.

Identified September 15, 2026More gemstone →

Explore Polished bloodstone (heliotrope), possibly brecciated jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Polished bloodstone (heliotrope), possibly brecciated jasper
Scientific name: Chalcedony (microcrystalline quartz, SiO₂) with iron-oxide inclusions; exact identification is uncertain from the image
Category: gemstone
Identified: September 15, 2026
Method: Standard

AI Estimated Value

Approximately $2–$15 for a small polished common cabochon; $20–$75 for larger, attractive, well-patterned pieces.

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

Opaque, dark green-brown body with reddish iron-oxide patches and a glossy vitreous-to-waxy polish; quartz hardness is about Mohs 6.5–7, with no visible cleavage and cryptocrystalline structure.

Formation & geological history

Forms when silica-rich groundwater fills cavities or fractures, incorporating hematite or jasper inclusions; deposits are commonly Paleozoic to younger, depending on locality. The specimen has been cut and tumbled/polished.

Uses & applications

Used for cabochons, beads, carvings, and inexpensive collector specimens; durable enough for jewelry but generally not high-value faceting material.

Geological facts

Classic bloodstone is green chalcedony marked by distinct red spots, while brown-red mottling and angular internal patches may indicate brecciated jasper or iron-rich chalcedony.

Field identification & locations

Identify by its waxy luster, lack of cleavage, hardness, and red inclusions; a quartz scratch test or refractive-index test distinguishes it from softer dyed glass or resin. Common sources include India, Brazil, Australia, Germany, and the United States.