Monumental Art Deco art nouveau necklace. Superbly designed with the squares and circles. Aurora Borealis crystals accent this gorgeous piece. The color of the genuine abalone shell has multiple shades of lilac abalone. Depending on the lighting. Quintessential of old style designs. Brand new. One of a kind. The total length of the necklace is 18 in which includes a Lobster Claw clasp and an extension and can be adjusted down to a 16 in. From a smoke-free pet-free home.