tourmaline

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“
The tourmaline was all ready, but up to one o'clock not a trace of the sun could be seen.

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Definitions (3)

Toggle American Heritage definitions American Heritage Dictionary (1)

  1. noun A complex crystalline silicate containing aluminum, boron, and other elements, used in electronic instrumentation and, especially in its green, clear, and blue varieties, as a gemstone.

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Examples (50)

  • 'Measure its single refraction, Doshie, to prove it isn't green tourmaline or green zircon. —  dummy 3
  • Some of these include tourmaline, sapphire, topaz, corundum, chiastolite, amethyst, opal, agate and flint. —  AllAfrica News: Latest
  • Current drilling has intersected visible gold within 50 quartz-tourmaline veins in 23 of 29 drill holes (ER08-113 to ER08-141). —  News
  • The Breo Roam sports watch is made from a material known as tourmaline, a naturally occurring mineral widely used as a semi-precious gemstone. —  TREND HUNTER - The Latest Trends
  • Little by little, but steadily alternative gems, such as the amethyst, the citrine and the tourmaline are gaining their share of the stone market nowadays. —  Find Free Articles - ArticlesBase
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Etymologies (1)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. French, from Sinhalese toramalli, carnelian.
 

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/ˈturməlɪn/
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