This is a very rare opal, almost never seen in bead form. Hyalite opal, also known as water-drop stone, is an opal that exhibits intense fluorescence under ultraviolet light despite being colorless and transparent. It is a crystal that is originally unsuitable for fine processing, like water droplets, but these appear to have been gathered in large quantities and processed into beads. It is unusual for this to be distributed as an accessory in the semi-precious stone industry. This stone is formed by steam ejected near volcanic vents and is called glass opal because of its glass-like appearance. However, the reason this stone glows is because it contains uranium and reacts to black light. Although it is not enough to affect the human body, it emits weak radiation. Please be sure to understand this before purchasing. As it is unlikely to be available in the future, please consider it. (Number of beads) 1 (Bead size) Approximately 11.5mm *Because this stone is processed from small crystals, there may be parts that are not perfectly round, as well as scratches and small chips. Please consider this before purchasing. (Shipping method) We will ship via Mercari with tracking. We will pack it with air cell mat and ship it quickly. If you have any questions, please leave a comment and we will answer, but we will reply late at night on weekdays due to work. Thank you for your understanding. ・Natural stone ・Beads ・Power stone #MorinoIshiyaOpal ←By stone #MorinoIshiyaBeads ←By item #MorinoIshiyaWhite ←By color #MorinoIshiya ←All products