Gua sha board is designed to improve the microcirculation of the facial blood vessels increase the flow of blood lymph and body fluids Note-all skin care scrapping plate are hand-made and it is normal to have 3mm difference As it is made by natural stone the color and grain may exist difference. Please understand. It will packed in a paper box.Simple operation easy to carry; Safe and effective with no side effects; Great Gua sha scraping tool Great Tools for Trigger Point Treatment on Face Material: Pink Crystal/Aventurine