Called the "genius stone" and the "stone of intelligence," it is also expected to improve concentration and memory, stabilize the mind, and relieve stress, making it popular as a good luck charm for exams and work. However, it has low hardness and is susceptible to water, so care must be taken when handling it. Size: Approximately 8mm per bead Inner diameter: Approximately 16cm I am selling this to organize my collection. For those who will cherish it ♡ #OhanaPowerStone ✭ I will offer a small discount if you purchase it with other items I have for sale ✭ Feel free to negotiate the price. ※ Individual results may vary. This is sold as a fashion accessory only. ※ Please understand that there may be original scratches, chips, and black spots. ※ Although it is a new, unused item, please understand that it is a used item that has been in someone's possession, and please purchase it with no claims and no returns. ※ It will be placed in a clear bag and wrapped in bubble wrap for shipping. Fluorite Genius Stone Fluorite Power Stone Bracelet Natural Stone