Swarovski Ladies Necklaces. Collection I, Harmonia series. SKU: 5600042. Swarovski Ladies Harmonia Oversized Crystal Pendant Necklace.This necklace is made from a single oversized elongated cushion cut crystal suspended on an adjustable-length chain. This necklace is part of the Harmonia family, designed by Creative Director Giovanna Engelbert for Collection I. Length: 29 1/2 inch. Pendant size: 1 1/4x7/8 inches.