Definition

A hard, crystalline mineral composed of silicon dioxide (SiO₂) that is one of the most abundant minerals on Earth. Quartz appears in many varieties, from colorless crystal to purple amethyst, and is used in jewelry, glassmaking, and electronics.

Example Usage

The quartz countertop in the kitchen is durable and doesn't require sealing like granite.

Origin

From German Quarz, possibly from Slavic kvarcy or of uncertain origin; known since ancient times.

Fun Fact

Quartz is piezoelectric, meaning it generates electrical charge when compressed—this property makes it essential for precision watches and electronic oscillators.

Source: Definition backfill (hailey)

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