• synonyms


  1. a colorless variety of opal, sometimes transparent like glass, and sometimes whitish and translucent.
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Origin of hyalite

First recorded in 1785–95; hyal- + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for hyalite

Historical Examples of hyalite

  • Girasol, Cacholong, Hyalite, and Menilite are varieties of opal.

    Cooley's Practical Receipts, Volume II

    Arnold Cooley

  • One is a specimen of hyalite—a sort of ropy, waxy glass-bubble holding water inside.

    Ruskin Relics

    W. G. Collingwood

British Dictionary definitions for hyalite


  1. a clear and colourless variety of opal in globular form
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012