mineral

Mixed Gemstone Collection

SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)

Hardness: 6.5-7 (Quartz minerals), 3.5 (Abalone); Colors: Green, Teal, Black, Iridescent; Luster: Vitreous to Pearly; Structure: Trigonal/Amorphous

Hardness: 6
Luster: Vitreous to Pearly

Identified May 6, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Quartz minerals), 3.5 (Abalone); Colors: Green, Teal, Black, Iridescent; Luster: Vitreous to Pearly; Structure: Trigonal/Amorphous

Formation & geological history

The quartz-based minerals (Bloodstone and Hawkeye) formed through metamorphic and hydro-thermal processes in crustal veins. The Abalone is biogenic, formed in marine environments.

Uses & applications

Primarily used for lapidary arts, jewelry components, cabochons, and metaphysical collecting.

Geological facts

This set includes Bloodstone, which was considered the 'Martyr's Stone' in the Middle Ages, and Blue Tiger's Eye (Hawkeye), which is a pseudomorph of quartz after crocidolite.

Field identification & locations

Includes Bloodstone (green with red spots), Blue Tigerseye (chatoyant dark blue), and Abalone (iridescent shell). Best identified by luster and characteristic patterns.

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