Turquoise and gold is one of my favorite combos. Here I've wrapped this rounded rectangle of turquoise in 22k gold and set it on a frame of 18k gold/sterling bimetal.* A lush cluster of welo opal beads on 14k pins sits below. 14k chain adjusts from 16 to 18 inches.
*18k bimetal features a sheet of 18k gold fused to a sheet of sterling to create a precious metal with gold on the front and silver on the back.