TISH PERIDOT
This one is PERIDOT, 10mm by 8mm.
The metal is .925 sterling silver with one micron of 18k gold vermeil, so the gold should last. And the ring is 11g so it is lovely and solid, and wonderfully comfortable to wear.
You could also wear two of these rings together, which looks spectacular, as shown in the picture with the amethyst and vasonite.