This is an Australian boulder opal bracelet. The bead size is approximately 12.5mm, and the inner diameter is 17. This rare stone, known as "boulder" (rock gem), has the light of opal trapped within the iron ore matrix. Depending on the angle of the light, a variety of colors such as blue, purple, and yellow appear, creating a mysterious glow like a rainbow overflowing from a crack in the earth. Because the patterns of each bead are different, it is truly a one-of-a-kind art piece. ◎ Enhances intuition ◎ Supports turning points in life ◎ Clears confusion in the mind ◎ Said to guide the owner to their "true path" While having a sense of weight, the iridescent light adds a light accent. Recommended for natural stone lovers and collectors alike. The patterns created by the beautiful opal play of color in each bead are like paintings. We highly recommend it for your collection. How about it as a Christmas present? #NaturalStone #BoulderOpal #OpalBracelet #AustralianMade #PowerStone #HealingStone #PlayOfColor #Spiritual #RareStone #UnisexBracelet #12mmBracelet #LargeBeadBracelet #LuckyCharm #IntuitionUp #RainbowStone