1) Platinum diamond semi-mount with "V" shaped head with diamonds on the north and south sides, knife edge shoulders with row above and below of round cut diamonds bead set, scallop design under shoulders set with round cut diamonds, head opening approx. 7.5 x 5 mm, sz 6.5 and 2) Platinum semi mounting with round cut diamond halo, shoulders with prong set round cut diamonds, three bezel set round cut diamonds on each side, head opening approx. 7 mm, sz 6.25, 12.1 grams tw