Vintage 10 KT solid white gold & onyx pendant necklace. Dainty Edwardian style filigree heart shaped onyx pendant, on a 16" solid white gold chain. The chain has twist design, and is diamond cut so it shimmers beautifully. Approximate measurements: The heart shaped pendant is 7/8"H x 5/8" W including the bail The chain is 1 mm x 16" long Markings: Both the chain and the pendant are marked "10K" for 10 karat gold and "OR" which is the maker's mark.