mineral

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

Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)

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

Hardness: 3-7 (Mohs)
Luster: Vitreous to waxy

Identified April 28, 2026More mineral →

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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.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral