tourmaline

noun

tour·​ma·​line ˈtu̇r-mə-lən 

-ˌlēn

: a mineral of variable color that consists of a complex borosilicate and is valued as a gem when transparent and cut

Examples of tourmaline in a Sentence

Recent Examples on the Web

Each large stone is surrounded by clusters of green beryls, aquamarines, tourmalines, sapphires, diamonds, paraibas, and tsavorites (green garnet). —Hannah Malach, InStyle, 16 June 2026

The necklace is punctuated by orange fire-opal cabochons and indicolite tourmalines, concealing a diamond-pavé dial at the center. —Taylor Stoddard, Robb Report, 16 June 2026

Crafted in white gold, the necklace was adorned with a pavé of blue and light blue sapphires, Paraiba tourmalines and diamonds — all brilliant-cut — recreating the depth and movement of the water. —Luisa Zargani, Footwear News, 11 June 2026

These stones are often marketed as ‘paraiba’ tourmalines, typically without the capitalization or accent. —Anthony Demarco, Forbes.com, 11 June 2026

Word History

Etymology

Sinhalese toramalli carnelian

First Known Use

1759, in the meaning defined above

Rhymes for tourmaline

• acridine
• acrolein
• adenine
• alkylene
• aniline
• anthracene
• aquiline
• asphaltene
• atlantean
• atrazine
• butadiene
• butylene

Kids Definition

tourmaline

noun

tour·​ma·​line ˈtu̇r-mə-lən 

-ˌlēn

: a mineral of variable color that makes a striking gem when transparent and cut