Gagátes

According to the Old English Dictionary:

gagátes

indecl. m. The agate or jet, a precious stone; găgātes = γăγάτηs :-- Hér biþ eác geméted gagátes, se stán biþ blæc-gym here is also found the agate, the stone is a black gem, Bd. 1, 1; S. 473. 24. Sceaf gagátes dǽl ðæs stánes on ðæt wín shave off a part of the stone agate into the wine, L. M. 2, 65; Lchdm. ii. 296, 11. Be ðam stáne ðe gagátes hátte, is sǽd ðæt he viii mægen hæbbe of the stone which is called agate, it is said that it hath eight virtues, 2, 66; Lchdm. iii. 296, 29. gagates