High-purity terahertz ore. It emits terahertz waves that vibrate one trillion times per second, and is said to be expected to promote blood flow, improve metabolism, improve coldness and stiffness, and improve mental relaxation and concentration. It is also said to be good for fatigue recovery and beauty effects. This is a mineral that can be recommended for people of all ages and genders. *:;:*:;:*:;:*:;:*:;:*:;:*:;:* Directly imported natural stones from around the world! The shop owner, who loves stones, makes his own purchases, and we have a variety of rare stones that are rarely seen in Japan. We will hold auctions from time to time. Please take your time to browse(^^) *:;:*:;:*:;:*:;:*:;:*:;:*:;:* ★ Bracelet size guide 7.5mm or less: Approximately 15-15.5cm 8-9.5mm: Approximately 15.5-16.5cm 10-11.5mm: Approximately 16-17cm 12mm or more: Approximately 17-17.5cm Resizing is possible. Please comment before purchasing. Additional charges will apply if the number of beads increases. ★ Please note that there may be some scratches, dents, inclusions, etc. due to the natural stone. ★ Due to the nature of online sales, there may be differences in color depending on the screen's color tone. Please understand that there may be some differences in the image. ★ In the unlikely event of an initial defect (damage, broken rubber, etc.) or a different item, we will respond. Please contact us within one week of arrival.