Old European brilliant-cut diamond of 6.10 carats, old and single-cut diamonds, platinum, circa 1930, signed J. Roca GIA, 2025, report no. 1236786242: 6.10 carats, O to P Range color, VS2 clarity Diamonds: approximately 40 old and single-cut with an approximate total weight of 0.90 - 1.10 carats Size/Dimensions: US ring size 63⁄4 Gross Weight: 9.1 grams