Both rings are 14K yellow gold channel set with either 3 (.2 tw) or 4 (.2 tw) princess cut diamonds with a textured 14K white gold accent.
14K yellow gold with a prong set triangular tanzanite cabochon.
14K white gold with a bezel set .27 ct SI1 G-H diamond on a sandblasted 14K yellow gold disk.
14K yellow gold with bezel set checkerboard cut garnet and 2 (.03 tw) bezel set diamonds.