Ocean Blue Halo Montana Sapphire ring. This stunning Montana Sapphire’s color is a beautiful ocean blue and ethically sourced. We created this beauty in two-toned 14K white gold, and rose gold with a simple halo design. The halo of this Montana sapphire ring is made with cognac diamonds. On the under side of this ocean blue halo Montana sapphire ring is the rose gold with 6 blue diamond accent stones. Montana sapphires are a 9 on the Mohs hardness scale, making this lovely ring extremely durable. Wear this Montana Sapphire ring for everyday or perhaps as an alternate engagement ring. Currently a size 6 3/4 but can resize for additional charge.