Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)

Physical Properties

Hardness: 3-7 (Mohs); Colors: Blue, pink, green, white, orange; Luster: Vitreous to waxy; Structure: Hexagonal, Cubic, or Trigonal; Cleavage: Varies by mineral.

Formation & Geological History

These are diverse minerals formed through igneous and metamorphic processes, found worldwide and later tumbled/polished by machines to create smooth, rounded shapes.

Uses & Applications

Used primarily for decorative art, jewelry (beads/pendants), metaphysical 'healing' crystals, and as affordable collectables for beginners.

Geological Facts

Tumbled stones are created in a rock tumbler using progressively finer grits of silicon carbide over several weeks to mimic the natural erosion found in riverbeds.

Field Identification & Locations

Identify in the field by checking hardness and streak tests; often found in gravel pits or pegmatite deposits. These specific pieces are arranged in a mixed-media floral pebble art display.

Identified on: 4/28/2026

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