1. Plural of phenakite; a rare, hard, transparent or translucent mineral composed of beryllium silicate, typically colorless or pale yellow, valued as a gemstone.
Usage: mineralogy; gemology; technical

Examples

• Phenakites are prized by mineral collectors for their exceptional clarity and hardness.
• The gemologist identified the crystals as phenakites based on their refractive index.
• Phenakites occur in pegmatites and hydrothermal veins in various parts of the world.
• Due to their rarity, phenakites command high prices in the gemstone market.
• The museum's collection includes several fine specimens of phenakites from Brazil.