Exodus 28:17
And thou shalt set in it settings of stones, even four rows of stones: the first row shall be a sardius, a topaz, and a carbuncle: this shall be the first row.
Cross-reference
Exodus 28:9 describes the two onyx stones on the shoulder pieces, part of the same high priestly garments as the breastplate stones here.
Exodus 28:11 details engraving the onyx stones like a signet, another element of the priestly attire alongside the breastplate.
Exodus 39:10-21 records the actual construction of the breastplate with its stones, fulfilling the instructions given here.
Exodus 35:9 lists onyx and other gems for the same ephod and breastpiece described here — directly continuing the tabernacle construction instructions.
Ezekiel 28:13 lists similar precious stones (sardius, topaz) adorning the king of Tyre, echoing the breastplate's gemstones.
Revelation 21:19-21 describes New Jerusalem's foundations with similar stones, typologically linking the priestly breastplate to the heavenly city.
Revelation 21:20 lists topaz among the New Jerusalem's foundations — mirroring the sacred stone list of the breastplate; both describe divine settings adorned with gems.