Necklace sterling sapphire marcasite pendant signed JC, open work prong set

18 inch long NEW sterling rolo chain, with 1.5" by 3/4" sterling oval pendant. Pendant has openwork sterling setting, with light blue, approx. 2 carat, oval sapphire in the center. Two faceted 1.5mm marcasites are placed on the bail and 26 -1mm marcasites around edges of oval. Necklace weighs 4.40 grams. Very good condition except for tiny chip on right side of sapphire, so small can only be seen with microscope.