This necklace was a gift and worn once. not much is know about it as it was not gifted in packaging. we do know it is rose gold plated, no we do not know the karat. the petals of the flower appear to be mother of pearl, but we're not certain if it is genuine. the center of the flower and one petal are fills with genuine tiny crystals. it is suspected the center crystal may not be crystal but cubic zirconia. chain is 20" adjustable to choker. clasp is a sliding ball and lobster claw. 💖😱💖Holiday Price Drop💖💖