Exodus 28:18

Overview - Exodus 28
1	Aaron and his sons are set apart for the priest's office.
2	Holy garments are appointed.
6	The ephod and girdle.
15	The breast-plate with twelve precious stones.
30	The Urim and Thummim.
31	The robe of the ephod, with pomegranates and bells.
36	The plate of the mitre.
39	The embroidered coat.
40	The garments for Aaron's sons.

Treasury of Scripture Knowledge

Exodus 28:18 (King James Version)
And the second row shall be an emerald, a sapphire, and a diamond.

emerald: {Nophech,} an emerald, the same with the ancient {smaragdus;} one of the most beautiful of all the gems, and of a bright green colour, without any mixture.; 39:11 Ezekiel 27:16
sapphire: 24:10 Job 28:6 Job 28:16 ; Solomon 5:14 ; Ezekiel 1:26 ; 10:1 Revelation 4:3
diamond: Jeremiah 17:1 ; Ezekiel 28:13