This is a 17cm inner diameter bracelet made with natural blue fluorite. ・Blue fluorite is expected to have effects such as improving冷静な判断力, concentration, and memory, enhancing communication skills, and providing peace of mind through stress relief. It is also called the "stone of genius" and is said to free you from fixed ideas and promote flexible thinking. 【Stone Size】8.8mm This is a handmade item. Please understand before purchasing. ※Price reduction is not possible. Thank you for viewing.