These 2 strands look so good together I decided to offer them as a pair. They were hand carved at the turn of the century; one with pearls of diminishing and increasing size and the other with filagree pearls that almost appear to be hollow. They both have screw clasps, one in metal, the other carved ivory. If you're concerned, Ivory from antiques more than 100 years old are legal to be imported and sold in the US. I would never buy new ivory. These necklaces measure 17 1/2" and 16" (45cm and 41cm). They will be shipped Priority Mail insured.