metamorphic

Red marble or marbleized limestone slab

Calcite-dominated crystalline carbonate rock (CaCO₃), likely red marble

AI-generated identification · may be incorrect

Typically Mohs hardness 3, pink to brick-red with irregular white calcite veining, vitreous to dull luster, and an interlocking calcite crystal texture; weakly cleaved rhombohedrally and reacts vigorously with dilute hydrochloric acid. The image may also show weathering, dirt, or a surface coating.

Identified September 22, 2026More metamorphic →

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At a glance

Common name: Red marble or marbleized limestone slab
Scientific name: Calcite-dominated crystalline carbonate rock (CaCO₃), likely red marble
Category: metamorphic
Identified: September 22, 2026
Method: Standard

AI Estimated Value

Approximately $10-$100 for a small common specimen; architectural slabs vary from about $30-$150+ per square meter depending on quality and provenance.

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 limestone recrystallized during regional or contact metamorphism; the red color commonly comes from iron oxides. Exact geological age and locality cannot be determined from the image.

Uses & applications

Used as dimension stone, flooring, cladding, monuments, countertops, and decorative aggregate; polished pieces may have modest ornamental value.

Geological facts

Red marble is often sold under trade names tied to its quarry, and some reddish rocks marketed as marble are actually brecciated or hematite-stained limestone.

Field identification & locations

Look for effervescence in acid, calcite softness, and crystalline white veining; a knife can scratch it, unlike quartz-rich quartzite. Common sources include Italy, Spain, Turkey, Greece, India, and many limestone belts worldwide.