Revelation 21:18

Καὶ ἦν ἡ ἐνδόμησις τοῦ τείχους αὐτῆς ἴασπις· καὶ ἡ πόλις χρυσίον καθαρόν, ὅμοιον ὑέλῳ καθαρῷ.

RBT Greek Interlinear:

Strongs 2532; Kai; Καὶ; And; Conj

Strongs 3588; hē; ἡ; the; Art-NFS

Strongs 1739; endōmēsis; ἐνδώμησις; structure; N-NFS

Strongs 3588; tou; τοῦ; the; Art-GNS

Strongs 5038; teichous; τείχους; wall; N-GNS

Strongs 846; autēs; αὐτῆς; her; PPro-GF3S

Strongs 2393; iaspis; ἴασπις; jasper; N-NFS

Strongs 2532; kai; καὶ; and; Conj

Strongs 3588; hē; ἡ; the; Art-NFS

Strongs 4172; polis; πόλις; city; N-NFS

Strongs 5553; chrysion; χρυσίον; gold; N-NNS

Strongs 2513; katharon; καθαρὸν; pure; Adj-NNS

Strongs 3664; homoion; ὅμοιον; like; Adj-NNS

Strongs 5194; hyalō; ὑάλῳ; glass; N-DMS

Strongs 2513; katharō; καθαρῷ; clear; Adj-DMS

RBT Translation:

ἐνδώμησις - Internal Construction/Framework

And the internal construction of the Wall of herself, is jasper, and the City is pure gold compared to transparent-crystal glass.

LITV Translation:
And the structure of its wall was jasper; and the city was pure gold, like pure glass.

ESV Translation:
The wall was built of jasper, while the city was pure gold, like clear glass.