Strong's Greek #4556
σαρδίῳ

Englishman's Concordance (References)

σαρδίῳ sardiō — 1 Occurrence

Revelation 4:3 - N-DNS
GRK:ἰάσπιδι καὶ σαρδίῳ καὶ ἶρις
NAS: stone and a sardius in appearance;
INT: jasper and a sardius and a rainbow