mineral

Clear quartz crystal (likely vein quartz)

Quartz, silicon dioxide (SiO₂), most likely colorless macrocrystalline quartz

AI-generated identification · may be incorrect

Transparent to translucent, vitreous luster, irregular conchoidal fractures and possible crystal faces; Mohs hardness 7, no cleavage, hexagonal crystal system, specific gravity about 2.65. The rounded shape and internal fractures suggest a broken or tumbled natural crystal rather than a fully formed point.

Identified September 12, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich hydrothermal fluids in veins and cavities, or accumulates as durable grains in sediment. Quartz is widespread in rocks of many ages; the specimen’s exact age cannot be determined visually.

Uses & applications

Used for glass, ceramics, abrasives, electronics, watches, and silicon production; clear attractive pieces are sold as mineral specimens or occasionally used in low-value jewelry.

Geological facts

Quartz can scratch ordinary steel and glass, while glass cannot reliably scratch quartz. Internal planes may create bright reflective flashes, but this is not diagnostic of diamond.

Field identification & locations

The clear fractured appearance fits quartz and is regionally plausible near 33.2°N, 7.6°W, where quartz-bearing veins and sedimentary rocks occur. Confirm with a hardness test and inspect for hexagonal faces; avoid destructive testing if valuable.