enhydros

enhydros

(ɛnˈhaɪdrɒs)
n
(Minerals) a piece of chalcedony that contains water
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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.
Enhydros - consists of quartz or of calcedonic or opaline silica which is deposited from heated waters and in which there are cavities partially filled with water, so that the inclusions of water can be seen within the substance of the transparent quartz or calcedony.