This lovely ring by Recreation Jewels is meant to emulate the night sky. But it’s a bit of a mystery in terms of the stones used, as they are merely described as blue and clear gemstones. The metal is gold plated sterling silver. I’m still trying to figure out why they have also described it as waterproof though…

This was on sale at the time of writing for USD$28 from $39, and is available only in sizes 6, 7 and 8.