Definition of hyalite in English:

hyalite

noun

  • [mass noun] A translucent, colourless variety of opal.

    • ‘This hyalite fluoresces bright green in short wave U.V. likely indicating the presence of small amounts of uranium salts.’

Origin

Late 18th century: from Greek hualos glass + -ite.

Pronunciation:

hyalite

/ˈhʌɪəlʌɪt/