This is a signed David Yurman 18 karat yellow gold and polished black onyx choker. The triangular shaped black onyx are polished pieces, with long, satin onyx pieces stationed in between. There are 18 karat yellow gold pieces stationed throughout the necklace, as well. The choker ends with an 18 karat yellow gold triangular shaped toggle that bears the tag with the David Yurman hallmark. The choker is 17.5" long and weighs 79 grams (50.7dwt). This is a preowned, estate item in very good condition.