noun
- A rare, brittle beryllium aluminum silicate mineral, typically colorless or pale blue, valued by collectors and sometimes used as a gemstone.
Usage: mineralogy; technical
Examples
- Euclase specimens are prized by mineral collectors for their transparency and delicate blue hue.
- The gemologist identified the crystal as euclase based on its hardness and optical properties.
- Euclase is found in pegmatites and metamorphic rocks in limited deposits worldwide.
- Due to its brittleness, euclase is rarely cut into faceted gemstones for jewelry.
- The museum's mineral collection includes a fine example of euclase from Brazil.