The Chrysoprase gemstone focal bead is from my stash and came originally from a bead show last year. I had it labeled, and I tested it, too. It is rectangular with rounded corners, 1 1/8 X 5/8 inch with wonderful dark jade green, lighter green, swirling bands of color that merge into almost amethyst.
I used an upcycled copper I.D. bracelet, discarding the marred nameplate and creating a link for the stone. Daisy spacers and wire loops were adding, hooking into the links before wrapping completely.
The copper chain is pretty big, oval with a twist and five links to an inch.
Closure is a handcuff clasp. There is some patina on the chain and it will darker more over time.