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
Extending the emphasis on nature, a ring with a 6.02 carat Brazilian aquamarine, resting on a shank embellished with two Paraiba tourmalines and diamond petals to mimic a rose, joins the new line.
—
India Brown, Robb Report, 8 July 2025
There’s a healthy squeeze of toothpaste, its colorful lines of active ingredients turned into wavy stripes of princess-cut diamonds and Paraiba tourmalines, a new gem in her repertoire, for rings and earcuffs.
—Lily Templeton, Footwear News, 4 July 2025
Maximum Temperature: 400°F | Barrel Sizes: 1-inch | Barrel Material: Ceramic and tourmaline
The Bottom Line
Our top pick, the InStyler Cerasilk Curling Iron, features a lightweight, ergonomic design that’s easy to use.
—Addie Morton, Southern Living, 11 Feb. 2025
Those traditional, extended glass vitrines that create more of a separation between shoppers and staff are being replaced, and the color palettes of store interiors are changing from dark brown to tourmaline, sunstone and topaz.
—David Moin, Footwear News, 16 June 2025
See All Example Sentences for tourmaline
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India Brown, Robb Report, 8 July 2025
There’s a healthy squeeze of toothpaste, its colorful lines of active ingredients turned into wavy stripes of princess-cut diamonds and Paraiba tourmalines, a new gem in her repertoire, for rings and earcuffs.
—Lily Templeton, Footwear News, 4 July 2025
Maximum Temperature: 400°F | Barrel Sizes: 1-inch | Barrel Material: Ceramic and tourmaline
The Bottom Line
Our top pick, the InStyler Cerasilk Curling Iron, features a lightweight, ergonomic design that’s easy to use.
—Addie Morton, Southern Living, 11 Feb. 2025
Those traditional, extended glass vitrines that create more of a separation between shoppers and staff are being replaced, and the color palettes of store interiors are changing from dark brown to tourmaline, sunstone and topaz.
—David Moin, Footwear News, 16 June 2025
See All Example Sentences for tourmaline
Cite this Entry
“Tourmaline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tourmaline. Accessed 19 Jul. 2025.
Copy CitationKids Definition
tourmaline
noun
tour·ma·line
ˈtu̇r-mə-lən
-ˌlēn
: a mineral of variable color that makes a striking gem when transparent and cut
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