Strong's Greek #4664
σμαραγδίνῳ

Englishman's Concordance (References)

σμαραγδίνῳ smaragdinō — 1 Occurrence

Revelation 4:3 - Adj-DMS
GRK:ὅμοιος ὁράσει σμαραγδίνῳ
NAS: like an emerald in appearance.
KJV: in sight like unto an emerald.
INT: like in appearance to an emerald