Mixed collection of Quartz varieties, Chalcedony, and metamorphic pebbles

Physical Properties

Hardness: 7 (Quartz items), 6.5-7 (Agates). Colors: Purple (Amethyst), Pink (Rose Quartz), Green/Blue (Aventurine or Amazonite), Multi-colored (Agate). Luster: Vitreous to waxy. Structure: Hexagonal/Trigonal or Cryptocrystalline.

Formation & Geological History

Formed through various geological processes: Amethyst and Rose Quartz typically form in pegmatites or hydrothermal veins; Agates and Chalcedony form in volcanic rock cavities or sedimentary deposits.

Uses & Applications

Commonly used for lapidary work, jewelry making, decorative home decor, metaphysical collecting, and as educational sets for beginning enthusiasts.

Geological Facts

This set contains two distinct forms of quartz: Macrocrystalline (visible crystals like the Amethyst) and Cryptocrystalline (microscopic crystals like the smooth Agates and Jaspers).

Field Identification & Locations

Identify by hardness (should scratch glass) and conchoidal fracture. Often found in riverbeds or near ancient volcanic activity. These specific tumbled stones are common commercial 'rock shop' specimens.

Identified on: 4/22/2026

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