A / astrăpĭas
noun greek

astrăpĭas

gen. ae · gender masculine · decl. 1st
= ἀστραπίας
a precious stone; black in color; with gleams of light crossing the middle of it
a precious stone, black in color, with gleams of light crossing the middle of it, Plin. 37, 11, 73, § 189.