Thank you for viewing. ◎ I hope this power stone will encourage you in some way. ◎ If you are interested in this stone, or if this product has caught your eye, I believe it is fate. Super Seven: Approximately 7mm Crystal: Approximately 6mm Purified. Size: Inner diameter approximately 15cm Uses transparent (4-ply) Ope-lon rubber Super Seven (from Brazil): It is said to enhance overall luck, spiritual energy such as spirituality and intuition, and bring connection and harmony with people and things. It is said to have effects such as raising overall luck, expanding one's own potential, and bringing love, harmony, and spiritual healing. Crystal: It is said to be a power stone that is compatible with anything. It is said to be a stone that wards off evil and brings good luck. Crystal symbolizes purity and innocence, cleanses the mind and body, activates vitality, and is said to awaken potential and talent. We look forward to your purchase, and appreciate your understanding as this is handmade. Also, as natural stones are used, please understand that there may be variations in color and shape, distortions, cracks, and inclusions.