According to him, jewelry with 24K gold has 100% or guaranteed 99.99% pure gold, or gold with a ratio of 24/24 (24 over 24).

Yellow gold is the classic norm for wedding and engagement rings, made by combining pure gold with metals of copper and zinc.

Baird & Co. refines 99.99% pure gold. It goes through over 10 tons of gold a year. It makes cast bars, minted bars, and coins. The refinery also makes wedding rings and refines silver. Baird & Co.