agate

Definition

A semitransparent, uncrystallized silicate mineral and semiprecious stone, presenting various tints in the same specimen, with colors delicately arranged and often curved in parallel alternating dark and light stripes or bands, or blended in clouds; various authorities call it a variety of chalcedony, a variety of quartz, or a combination of the two.

Etymology

From Middle French agathe, from Latin achatēs, from Ancient Greek ἀχάτης (akhátēs, “agate”).

Example Sentences

• "The ends of the veil, drawn over her head, were embroidered with silver; she had long gold ear-rings; to a rich and large gold chain was suspended a cross set with precious stones; and over the arm of her chair hung a rosary of agate beads."
• "Yes: living among the cohabations^([sic]) of Faust himself, among the litharge and agate and hyacinth and pearls."

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