Blue Chalcedony 10mm Inner Diameter: Approximately 16cm [Blue Chalcedony (Blue Agate)] Blue agate, representing intelligence and reason, is said to activate the mind and enhance thinking ability. It is also considered ideal as a talisman for work, study, and entrance exams. It is recommended for those who want to achieve spiritual growth and step up, or to unlock hidden talents. It is also said to enhance aesthetic sense and cultivate a refined sensibility. Agate possesses the generous energy of the earth and is said to bring health, longevity, and children to its wearer. It is said that wearing it cultivates inner richness and gratitude. ◆Please Note ◎There may be color errors depending on the monitor environment, so please refrain from purchasing if you are seeking perfection. ◎Please understand that there may be chips, cracks, dents, and inclusions in the natural stone. Natural Stone Power Stone Healing Healer Aqua Onyx