C. F. Keil and Franz Delitzsch on 2 Chronicles 1:14-15

2Ch 1:14-15 2Ch 1:14, 2Ch 1:15, with the exception of one divergence in form and one in matter, correspond word for word to 1Ki 10:26 and 1Ki 10:27. Instead of ויּנחם, he led them (Kings), there stands in 2Ch 1:15, as in 2Ch 9:25, the more expressive word ויּנּיהם, “he laid them” in the chariot cities; and in 2Ch 1:15 ואת־הזּהב is added to את־הכּסף, while it is omitted from both 1Ki 10:27 and also 2Ch 9:27. It is, however, very suitable in this connection, since the comparison “like stones” has reference to quantity, and Solomon had collected not only silver, but also gold, in quantity.