[1] : The Collaborative International Dictionary of English v.0.48

hyalite \hy"alite\, n. gr. "y`alos glass: cf. f. hyalite.
   min.
   a pellucid variety of opal in globules looking like colorless
   gum or resin; -- called also m"uller's glass.
   1913 webster
see also:
m"uller's glass 

[2] : The Collaborative International Dictionary of English v.0.48

opal \o"pal\, n. l. opalus: cf. gr. ?, skr. upala a rock,
   stone, precious stone: cf. f. opale. min.
   a mineral consisting, like quartz, of silica, but inferior to
   quartz in hardness and specific gravity.
   1913 webster

   note: the precious opal presents a peculiar play of colors
         of delicate tints, and is highly esteemed as a gem. one
         kind, with a varied play of color in a reddish ground,
         is called the harlequin opal. the fire opal has
         colors like the red and yellow of flame. common opal
         has a milky appearance. menilite is a brown impure
         variety, occurring in concretions at menilmontant, near
         paris. other varieties are cacholong, girasol,
         hyalite, and geyserite.
         1913 webster
see also:
precious opal harlequin opal fire opal common opal menilite cacholong 
girasol hyalite geyserite 

Hyalite >> H Words
Hyalite, definition of term: Hyalite
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