mineral

Clear quartz sphere

Quartz (silicon dioxide, SiO₂), likely rock crystal or low-grade milky quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; colorless to translucent, glassy luster, hexagonal crystal structure, indistinct cleavage, conchoidal fracture, specific gravity about 2.65. The perfectly rounded form is polished or carved rather than natural.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich hydrothermal fluids, pegmatites, and igneous rocks throughout geological time; this specimen’s age cannot be determined from the image. It may have been shaped from quartz vein material or a synthetic/low-clarity quartz blank.

Uses & applications

Used for decorative spheres, ornaments, lapidary pieces, countertops, glass, electronics, and oscillator components; clear, inclusion-free quartz can be used as a gemstone.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure.

Field identification & locations

Identify by its glassy appearance, cool feel, hardness, and lack of bubbles or flow lines; it should scratch ordinary glass but not be scratched by a steel knife. Common sources include Brazil, Madagascar, the United States, and China.