tourmaline

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tour·ma·line

(to͝or′mə-lĭn, -lēn′)

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.

[French, from Sinhalese toramalli, carnelian.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

tourmaline

(ˈtʊəməˌliːn)

(Minerals) any of a group of hard glassy minerals of variable colour consisting of complex borosilicates of aluminium with quantities of lithium, sodium, calcium, potassium, iron, and magnesium in hexagonal crystalline form: used in optical and electrical equipment and in jewellery

[C18: from German Turmalin, from Sinhalese toramalli carnelian]

tourmalinic adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tour•ma•line

(ˈtʊər mə lɪn, -ˌlin)

n.

a complex silicate mineral, essentially sodium aluminum borosilicate, occurring in variously colored transparent gem varieties depending on the presence of different metals.

[1750–60; earlier tourmalin < German Turmalin, ultimately < Sinhalese tōramalliya carnelian; see -in¹]

tour`ma•lin′ic (-ˈlɪn ɪk) adj.

tour·ma·line

(to͝or′mə-lĭn, to͝or′mə-lēn′)

A silicate mineral consisting of aluminum, boron, and other elements. Tourmaline occurs in many different translucent colors, usually in crystals shaped like 3-, 6-, or 9-sided prisms. It is especially common in pegmatites.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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Noun

tourmaline - a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones

mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition

schorl - black tourmaline

transparent gem - a gemstone having the property of transmitting light without serious diffusion

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Her eyes sparkled as two diamonds, and her lips were tinted like a tourmaline. All adown her back floated tresses of ruddy gold, with a slender jeweled circlet confining them at the brow.

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Coral patches uprose everywhere from the turquoise depths, running the gamut of green from deepest jade to palest tourmaline, over which the sea filtered changing shades, creamed lazily, or burst into white fountains of sun-flashed spray.

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His vest was rose-colored satin, with tourmaline buttons.

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We found two or three very large blue-cap tourmalines, each completely filling its own satellite pocket.

History of the Tourmaline Queen mine San Diego County, California

Hublot dares to be different again, by setting for the first time ever on a watch, a baguette-cut version of the world's most unique precious stone, the ParaE[degrees]ba Tourmaline. This new line comes in two variations: the Big Bang Unico ParaE[degrees]ba 45mm and Big Bang ParaE[degrees]ba One-Click 39mm, in white gold or King Gold, inviting you to dive into limpid waters through their blue sunray dial, bezels set with 48 baguette-cut and hundreds of brilliant-cut ParaE[degrees]ba Tourmalines, and turquoise blue alligator leather straps.

THE HUBLOT GENEVA DAYS ROADSHOW

Hawthorne, "Crystal chemistry of three tourmalines by SREF, EMPA, and SIMS," American Mineralogist, vol.

The Chemical States of Color-Induced Cations in Tourmaline Characterized by X-Ray Photoelectron Spectroscopy

Highlighting the piece are golden South Sea pearls, evoking a flower's birth with raw tourmalines and faceted gems embodied in spiders and bugs, teeming with nature's wonder.

Golden pearls in NY exhibit speak of Filipino mythology

Kerez (Read, 1982), this optical effect was apparently first described by Mitchell (1967) in two very unusual Brazilian tourmalines. He wrote: "To all outward appearances they are quite normal stones.

The Kerez effect in green tourmaline

Exotic Gems; Volume 3: How to Identify, Evaluate, Select and Care for Matrix Opal, Fire Agate, Blue Chalcedony, Rubellite Indicolite, Paraiba and Other Tourmalines

Accoding to StyleList, the strappy stilettos glittered with diamonds, pink sapphires, tourmalines and russellites, reports the New York daily News.

Eye-popping gem-encrusted $180K 'luxury shoe' on display at Cannes

As well, a display of gemstone giants showcases beryls, tourmalines, and spodumenes weighing in at 113 to more than 300 carats.

Romancing the stones: how one man's passion for gems led to a collection that rivals those of royal families

Sri Lanka is famous for its huge blue sapphires, red rubies, cat's eyes, alexandrites, tourmalines, zircons, garnets, moonstones, amethysts and topaz.