Exodus 39:9

7 And he put them on the shoulders of the ephod, that they should be stones for a memorial to the children of Israel; as the LORD commanded Moses.

8 And he made the breastplate of cunning work, like the work of the ephod; of gold, blue, and purple, and scarlet, and fine twined linen.

It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being doubled.

10 And they set in it four rows of stones: the first row was a sardius, a topaz, and a carbuncle: this was the first row.

11 And the second row, an emerald, a sapphire, and a diamond.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
It was square when folded over double, a span long and a span wide.
KJV
It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being doubled.
WEB
It was square. They made the breastplate double. Its length was a span, and its width a span, being double.
ASV
It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being double.
DARBY
It was square; double did they make the breastplate, a span the length thereof, and a span the breadth thereof, doubled.
BLB
It was square; doubled they made the breastplate; a span its length and a span its width—doubled.
ÅB
Den var firkantet og dobbelt lagt; et spann lang og et spann bred var den og dobbelt lagt.
OTB
Det var firkantet og brettet dobbelt, en spann i lengde og bredde.
B1930
Den var firkantet og dobbelt lagt; et spann lang og et spann bred var den og dobbelt lagt.

Study notes (Tyndale)

Original text and word study