enhydros

enhydros

(ɛnˈhaɪdrɒs)
n
(Minerals) a piece of chalcedony that contains water
References in periodicals archive ?
In Kucera's specimens, ranging from thumbnail size to matrix plates 20 cm wide, the amethyst crystals are color-zoned (typically, very pale purple to almost colorless on the bottom 2/3 of the prisms, deep purple near the tips), and uniformly of very high luster; individual crystals, including a few scepters and a few with enhydros, reach 15 cm long.