cordierite
/ˈkɔrdiəraɪt/
noun
- A blue or gray mineral sometimes used as a gemstone, known for changing color when viewed from different angles.
- The jeweler showed us a ring with a cordierite that shifted from blue to gray in the light.
- Cordierite is often called 'water sapphire' because of its clear blue color.
- Geologists found a large deposit of cordierite in the mountain region.
Synonyms