This is a stylish necklace that seems to bring good luck. I received it a few years ago but never wore it, so it's been stored in my closet. I believe the black beads are onyx, a type of power stone. The accent-colored beads, which look like a reddish-brown, are possibly carnelian or garnet. I'm not an expert, so please understand that I'm not certain. The crystal part is quite heavy, so it might not be suitable for those with stiff shoulders. Since I haven't used it at all, I don't see any scratches or stains, but please understand that it has been stored at home. Thank you. Actual size: Necklace part: approximately 60 cm Pendant part: approximately 5.5 cm