eye agate

English

Noun

eye agate (countable and uncountable, plural eye agates)

1. A kind of circle agate, with the central part of deeper tints than the rest of the mass.

   Synonym: eyestone

   • 1867, Lewis Feuchtwanger, A Popular Treatise on Gems:

     If the stripes run together around the centre, it is called the circle agate, and if in the same stone the centre shows more colored spots, it is called the eye agate, or eyestone