Thank you for viewing. ◎ I hope this power stone will encourage you in some small way. ◎ If this stone has caught your eye, I believe it's fate. Red Agate: Approximately 10mm and 8mm Cut Buttons Purified. Inner diameter: Approximately 15cm Uses transparent Ope-lon rubber (4-ply) Red Agate: It is said to have the power to strengthen bonds and boost vitality, energizing the blood, and is considered a talisman for fertility. Please understand that this is handmade. We appreciate your purchase. Also, as natural stones are used, please understand that there may be variations in color, shape irregularities, distortions, cracks, and inclusions.