• WordNet 3.6
    • n 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
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Webster's Revised Unabridged Dictionary
    • n Tourmaline (Min) A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the most common variety, but there are also other varieties, as the blue (indicolite), red (rubellite), also green, brown, and white. The red and green varieties when transparent are valued as jewels.☞ Crystals of tourmaline when heated exhibit electric polarity (see Pyroelectric n.). Tourmaline is also used in the form of a polariscope called tourmaline tongs.
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Chambers's Twentieth Century Dictionary
    • n Tourmaline a beautiful mineral, with vitreous lustre, mostly black, brownish-black, and bluish-black.
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Webster's Revised Unabridged Dictionary
F. tourmaline, cf. It. turmalina, tormalina, NL. turmalina, turmalinus,; all fr. tournamal, a name given to this stone in Ceylon
Chambers's Twentieth Century Dictionary
From Tourmali, in Ceylon, whence a variety of the stone was first brought.


In literature:

His vest was rose-colored satin, with tourmaline buttons.
"The Emerald City of Oz" by L. Frank Baum
Composed of Tourmaline and Quartz.
"Two Expeditions into the Interior of Southern Australia, Volume I" by Charles Sturt
Composed of Tourmaline and Quartz.
"Two Expeditions into the Interior of Southern Australia, Complete" by Charles Sturt
So we have decided to take you to Tourmaline and let her decide what shall be your fate.
"Sky Island" by L. Frank Baum
A reddish granitic stone, composed of quartz, felspar, and tourmaline.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
Other crystals are curved, and some perforated in the axis like the tourmaline, so as to contain other minerals.
"Lippincott's Magazine of Popular Literature and Science" by Various
We may begin the study of the polarization of light, with ease and profit, by means of a crystal of tourmaline.
"Six Lectures on Light" by John Tyndall
Tourmaline was useless for electric rays; but a lock of human hair was extraordinarily efficient.
"Sir Jagadis Chunder Bose" by Sir Jagadis Chunder Bose
The ancients also described what was probably tourmaline, a mineral which has the same qualities.
"Electricity for Boys" by J. S. Zerbe
The granite ridge is rich in quartz and in tourmalines.
"The Ranger Boys and the Border Smugglers" by Claude A. Labelle
This black thing, which is one of the prettiest of the very few pretty black things in the world, is called 'Tourmaline.
"The Crown of Wild Olive" by John Ruskin
This plate of tourmaline can be turned round by the observer.
"The Story of the Heavens" by Robert Stawell Ball
Tourmaline is a complex hydrous silicate of aluminum and boron, with varying amounts of magnesium, iron, and alkalies.
"The Economic Aspect of Geology" by C. K. Leith
Connecticut green tourmaline tends more to the dark yellowish green, and Ceylon tourmaline to the olive green.
"A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public" by Frank Bertram Wade
Tourmaline polarizes light sent through its sides and becomes positively electrified at one end while being heated.
"The Machinery of the Universe" by Amos Emerson Dolbear
It is true, others before him had noted that substances like tourmaline possessed electrical properties.
"Catholic Churchmen in Science" by James J. Walsh
The action drew his attention to the tourmalin ring she wore above her wedding-ring.
"The Daughter Pays" by Mrs. Baillie Reynolds
I cared for nothing but that sweet yet terrible depth and stillness I had seen beyond the tourmalines of her eyes.
"The Debit Account" by Oliver Onions
The phenomenon was first observed in crystals of tourmaline, the principal axis of which is a uniterminal triad axis of symmetry.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7" by Various
So we have decided to take you to Tourmaline and let her decide what shall be your fate.
"Sky Island" by L. Frank Baum

In poetry:

Their robes and rings were mine to draw from shimmering trays—-
Brocades and broidered silks, topaz and tourmaline—
Their turban-cloths to wind in proud capricious ways,
And fasten plumes and pearls and pendent sapphires in.
"The Sultan's Palace" by Alan Seeger

In news:

Zaleski, 33, of 5439 Tourmaline Drive, was also charged with second-degree menacing, a misdemeanor.
There were "ceramic" and "tourmaline" dryers among the high- and low-rated models.
The Tourmaline Tools 2000 Ionic Blow Dryer from Hot Tools works on two ion-generating systems to produce negative ions that improve hair shine and reduce frizz.
Dentelle Tourmaline Rebrodée ring from Dear Dior collection.
Michael Janzen Surfing : Tourmaline Lives: Mission Valley Miss work for surfing .