GUASHA-CRI-01 Origin: Brazil Grade: A Dimensions: 110mm Weight: Approximately 50g Origin: Brazil Grade: A = good Rock crystal feather Gua Sha of 110mm. Gua Sha stones are used as massage stones mainly for the face. In Chinese, Gua Sha means "scrape" (gua) the "fever" – or the "illness" – (sha). The treatment involves gently stimulating points along the meridians to optimize blood and energy circulation through a technique of rubbing the skin with a flat stone. Gua Sha has been practiced in traditional Chinese medicine for thousands of years. Perfected over the centuries, this treatment has a beautifying and firming effect on the skin. Rock crystal is associated with health, harmony, and meditation. It can also be used in all situations that require serenity and clarity.