Natural square 1.09ct Ruby 0.23ct round diamond in Platinum ring 7g s6.5 JR103

Gorgeous Platinum 900 lady vintage ring, circa 1970-1980. It features two rows of natural round diamonds in centers, combined weight 0.23ct, G-H/VS2-Si1, with two rows of natural squares on borders. Ruby weight 1.09ct, ring top 8.17mm wide, ring size 6.5, weight 7.0 grams, hallmark PT900