mineral

Polished stone clock face, likely agate or jasper

Unconfirmed silica-rich material; possibly banded chalcedony (SiO₂)

AI-generated identification · may be incorrect

The clock appears to have a polished, naturally patterned stone face with a darker rim; the photograph does not show enough detail to confirm the material. If agate or jasper, hardness is about 6.5–7 Mohs, with a waxy to vitreous luster and microcrystalline quartz structure.

Identified October 2, 2026More mineral →

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Physical properties

Formation & geological history

The stone was cut and shaped into a clock. Agate and jasper form as silica-rich fluids fill cavities or replace rock, commonly in volcanic settings; their ages vary widely.

Uses & applications

Decorative clock and collectible object; agate and jasper are also used for ornaments, cabochons, and small carvings.

Geological facts

The hands and numerals are manufactured clock components; the geological material, if present, is the stone face and rim.

Field identification & locations

Look for natural banding, irregular color zones, and a hard, glassy-to-waxy surface to distinguish silica stone from painted or cast material. A close-up or material test is needed for a reliable identification.