If you have a desired inner circumference, please be sure to let us know before purchasing. It will cost an additional 50 yen for every 1 cm increase. Reducing the size is free. Inner circumference: Approximately 16cm (stretches) Five-clawed Emperor Dragon Carved Rock Crystal (approx. 12mm) Blue Aura (approx. 10mm) Black Onyx (approx. 8mm) Hematite (approx. 8mm) Cut Crystal *The number of stones may vary depending on the size. ◆Rock Crystal It is said to be a versatile power stone that corresponds to all situations, places, and events. It is said to awaken and awaken potential abilities and power. ◆Onyx Considered a "stone that protects against evil spirits," it is said to awaken the instincts within the body and stimulate and improve athletic ability. ◆Hematite A metallic, heavy crystal mainly composed of iron. The word "hema" in Greek means "blood." The name comes from the fact that the fragments are red when cut. This stone, which has been highly valued as a talisman in ancient times, seems to have the power to ward off danger and disaster and bring victory. It is also recommended for those who want to achieve victory in sports or business. ◆Aura It shines in rainbow colors when exposed to light, and is very beautiful, attracting a lot of people. It is said to enhance communication skills with people, bring out the owner's potential consciousness, and enrich imagination. It is also a very popular power stone in the United States. *Because they are natural stones, the colors and patterns may vary even for the same stone. *Colors may differ from the actual product due to lighting. In addition, there may be cracks and inclusions unique to natural materials. Please understand this beforehand.