Overnight Mountings Two Stone Ring. Available in sizes 3 - 15. (with specifications 0, 1/4, 1/2 and 3/4). Available metals are 14kt, 10kt, 18kt, Platinum, Palladium and Silver with colors White, Yellow, Pink and Green. Available finishes are complete, polished blank (no stones), clip and ship. Diamond specifications: RD.5000PT 2 SI2, H-I. Pennyweight (dwt) is 2.55.