Quartz Pebble

Physical Properties

Hardness: 7 on Mohs scale; Color: Translucent yellow to honey-brown; Luster: Vitreous to waxy (when tumbled/worn); Crystal structure: Hexagonal/Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & Geological History

Formed via igneous processes or as precipitates in hydrothermal veins. This specific specimen has been physically weathered and rounded into a pebble shape by fluvial or marine water action over thousands of years.

Uses & Applications

Used as an abrasive, in glass making, construction aggregate, and as a decorative stone or lapidary material. Small tumbled stones are popular in the metaphysical and collecting communities.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. Its name comes from the German word 'quarz'. Iron impurities likely give this specimen its yellowish hue, similar to citrine.

Field Identification & Locations

Identified in the field by its hardness (scratches glass), lack of cleavage, and smooth water-worn surface. Commonly found in riverbeds, beaches, and glacial deposits worldwide.

Identified on: 4/29/2026

Mode: Standard