Place a setting of gemstones on it, four rows of stones:

The first row should be
a row of carnelian, topaz, and emerald;

They mounted four rows of gemstones on it. The first row was a row of carnelian, topaz, and emerald;

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

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