noun
- plural of tourmaline; crystalline minerals that occur in various colors and are used as gemstones
Usage: mineralogy; jewelry
Examples
- The jewelry store displayed tourmalines in pink, green, and blue varieties.
- Tourmalines are prized for their brilliant colors and clarity.
- The geologist found several tourmalines in the pegmatite rock formation.
- Pink tourmalines are especially popular in engagement rings.
- The museum’s mineral collection includes rare watermelon tourmalines.
- Tourmalines can be found in Brazil, Afghanistan, and Maine.