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garnet

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garnet

Group of silicate minerals with the formula X3Y3(SiO4)3, where X is calcium, magnesium, iron, or manganese, and Y is usually aluminium or sometimes iron or chromium. Garnets are used as semi-precious gems (usually pink to deep red) and as abrasives. They occur in metamorphic rocks such as gneiss and schist.

Garnets consisting of neodymium, yttrium, and aluminium (referred to as Nd-YAG) produce infrared laser light when sufficiently excited. Nd-YAG lasers are inexpensive and used widely in industry and scientific research.



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Before each guest stood a tiny glass that looked and sparkled like a garnet gem.
The Awakening and Selected Short Stories by Chopin, Kate View in context
"I'm going to ask my mother to let me wear her garnet ring," said Emma Jane.
Rebecca Of Sunnybrook Farm by Wiggin, Kate Douglas View in context
Presently I discovered that she knew I was watching her, for she stirred not, she lifted not her crafty eyelid; she had glanced down from her netting to her small foot, peeping from the soft folds of her purple merino gown; thence her eye reverted to her hand, ivory white, with a bright garnet ring on the forefinger, and a light frill of lace round the wrist; with a scarcely perceptible movement she turned her head, causing her nut-brown curls to wave gracefully.
The Professor by Bronte, Charlotte View in context
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