Orange Quartz (or Tumbled Carnelian)

Physical Properties

Hardness: 7 on the Mohs scale; Color: Translucent orange to creamy white; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.65

Formation & Geological History

Formed through the precipitation of silica-rich fluids in volcanic cavities or hydrothermal veins. Common in ancient sedimentary deposits where silica has replaced other minerals or filled voids.

Uses & Applications

Used primarily in lapidary arts, jewelry making (beads and cabochons), and as a popular decorative or 'pocket stone' for mineral collectors and metaphysical enthusiasts.

Geological Facts

Orange-hued quartz is often a variety of chalcedony known as carnelian, which has been used for signet rings and amulets since the Neolithic era and the Bronze Age.

Field Identification & Locations

Identify by its hardness (will scratch glass), translucent appearance, and lack of distinct cleavage planes. Often found in riverbeds or coastal gravels as water-worn pebbles.

Identified on: 5/15/2026

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