This antique Edwardian pendant necklace features 2.85 carats of Old Mine and Rose Cut diamonds set in platinum. The centerpiece is a .36-carat Old Mine cut diamond, flanked by two diamonds totaling .50 carats, all with SI1 clarity and I-J color. Additional accent diamonds, including one 3.75mm diamond at .21 carats and four 3.5mm diamonds totaling .68 carats, bring the total weight to .89 carats. These diamonds, with VS2 clarity and I color, are bezel set with fine milgrain edges, reflecting the Edwardian era's design. The pendant, originally a brooch, hangs from an 18-karat white gold chain, adjustable between 16 to 18 inches.