John Gill Commentary 1 Chronicles 29:8

"And they with whom [precious] stones were found gave them to the treasure of the house of Jehovah, under the hand of Jehiel the Gershonite." — 1 Chronicles 29:8 (ASV)

And they with whom precious stones were found
Such as are mentioned (1 Chronicles 29:2)

gave them to the treasure of the house of the Lord ;
to be laid up there:

by the hand of Jehiel the Gershonite ;
who, and his sons, had the care of that treasury, (1 Chronicles 27:21 1 Chronicles 27:22) .