Gagátes

According to the Old English Dictionary:

gagátes

l. gagates jet, at end for Lch. iii. l. Lch. ii., and add :-- Hér bið geméted gagates stán; sé bið swylce blæc gim, gif mon déð on fyr, nǽdran fleógaþ áweg ðone stenc gignit lapidem gagatem; est nigrogemmeus, et ardens igni admotus incensus serpentes fugat, Bd. 1, 1; Sch. 9. 5. [N. E. D. gagate.] gagates