Do not use your Gua Sha if it is chipped or broken. Our Gua Sha is made of delicate Bian Stone, so take care not to drop it on hard surfaces and always store it in the velvet protective pouch that it came with when not in use.If your Gua Sha arrived damage, please contact us as soon as possible at info@lovevelvette.com, and we'd be more than happy to replace it for you!