Thank you for viewing. Stone Name: Blue Tourmaline Silica Stone Size: 7mm Inner Diameter: Approximately 14-15cm Condition: Only tried on It is said to "enhance aesthetic sensitivity and bring a mature heart and discerning eye." It is also said to attract only what is truly needed, bringing peace to the heart and life. Purchased at Tida Stone in Okinawa. Please note that due to the nature of natural stones, there may be small chips, dents, irregularities, and cracks. As this item has been handled by a person, we appreciate your understanding.