9ct Yellow Gold Diamond Cut Trace Chain (Pendant Perfect)This yellow gold, 18" chain is perfect for wearing with pendants. A 0. 9 mm gauge means it is not fine or flimsy, it has a strength to it. The length of 18" means it sits just in the right place for most ladies, to wear it with a pendant. Trace chain links catch the light nicely but aren't too fancy that they detract from the pendant design.