noun
- plural of spinel; hard crystalline minerals composed of magnesium aluminum oxide, often used as gemstones
Usage: mineralogy
Examples
- The jewelry store displayed several beautiful red spinels.
- Spinels are often confused with rubies due to their similar appearance.
- The museum’s mineral collection includes rare blue spinels.
- Synthetic spinels are commonly used in industrial applications.
- These spinels were mined from deposits in Myanmar.
- The gemologist identified the stones as natural spinels rather than garnets.