igneous

Granite with a quartz-rich inclusion

Granite, composed chiefly of quartz, feldspar, and mica; the visible inclusion appears to be milky quartz

AI-generated identification · may be incorrect

Coarse-grained, pink-tan and gray, with a granular texture and glassy gray inclusion. Quartz is Mohs 7; feldspar is about 6; granite has no single crystal structure or cleavage.

Identified October 14, 2026More igneous →

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At a glance

Common name: Granite with a quartz-rich inclusion
Scientific name: Granite, composed chiefly of quartz, feldspar, and mica; the visible inclusion appears to be milky quartz
Category: igneous
Identified: October 14, 2026
Method: Standard

AI Estimated Value

Common unworked granite: about $1–$10 for a small specimen; this appears to be an ordinary rock surface rather than a collectible sample.

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

Coarse-grained, pink-tan and gray, with a granular texture and glassy gray inclusion. Quartz is Mohs 7; feldspar is about 6; granite has no single crystal structure or cleavage.

Formation & geological history

Granite forms when silica-rich magma cools slowly underground, allowing large crystals to grow. Its age cannot be determined from the image; granites range from recent to billions of years old.

Uses & applications

Granite is widely used as building and dimension stone, countertops, paving, and aggregate; quartz is used in glass and electronics.

Geological facts

The pale, translucent patch is consistent with quartz, but a photograph alone cannot confirm its identity or whether it is a natural inclusion.

Field identification & locations

Identify granite by its interlocking visible mineral grains and hardness; quartz should resist scratching by a steel knife. Granite occurs worldwide in continental crust.