mineral

Quartz crystal cluster (likely hematoid/iron-stained quartz)

Quartz, silicon dioxide (SiO₂), with iron-oxide staining and possible chalcedony/microcrystalline matrix

AI-generated identification · may be incorrect

Translucent white to peach-orange crystals with vitreous luster and pointed hexagonal forms; hardness 7 Mohs, no cleavage, conchoidal fracture, trigonal crystal structure, specific gravity about 2.65. The orange-brown coloration is probably hematite or limonite coatings/inclusions.

Identified September 2, 2026More mineral →

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At a glance

Common name: Quartz crystal cluster (likely hematoid/iron-stained quartz)
Scientific name: Quartz, silicon dioxide (SiO₂), with iron-oxide staining and possible chalcedony/microcrystalline matrix
Category: mineral
Identified: September 2, 2026
Method: Standard

AI Estimated Value

About $10–$60 for a common hand specimen; $75–$200+ for a large, well-formed, locality-documented cluster.

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

Formed when silica-rich hydrothermal fluids or groundwater deposited quartz in cavities and fractures, commonly in volcanic rocks or mineralized veins. The specimen’s exact geological age and locality cannot be determined from the image.

Uses & applications

Used mainly as a decorative and collecting specimen; attractive clusters may be sold as cabinet pieces. Quartz is also important in glass, electronics, abrasives, and engineered stone.

Geological facts

Quartz commonly forms six-sided prisms terminated by pyramidal faces; iron staining can produce peach, honey, or rusty colors without changing the quartz composition.

Field identification & locations

Look for glassy luster, pointed crystal terminations, hardness sufficient to scratch glass, and lack of cleavage. Common sources include Brazil, Madagascar, Morocco, Mexico, and the United States; avoid confusing it with calcite, which is softer and cleaves readily.