IMPORTANT: â™¥ 10mm Natural White Calcite (Iceland Spar – Optical Calcite) Grade AA. â™¥ When your select your size (from the drop-down box) let me know the exact measure of your wrist without adding extra length please. I will do it and you will get a perfect fit! 😉 For any question do not hesitate to contact me and I will answer you quickly. â™¥ Each piece comes in a delicate pouch. These bags are ideal to preserve the jewel in perfect conditions and are the ideal wrap to present as a gift to that special person. â™¥ All the MainaShikiÂ´s creations are made to order with high quality gemstones in order to you can enjoy to the maximum their properties. Only genuine gemstones have healing properties. Thank you for stopping by my shop!