Inner diameter: Approximately 16.5 cm Bead size: Approximately 11.7 mm - 12.0 mm Please allow for some margin of error. From Colombia Color of Golden Lemurian: Due to iron (iron oxide). The crystal gained this color through the adhesion of iron during its growth. The color is similar to Smoky Citrine. Small rainbows can be seen from the cracks, making it beautiful. Purchased from a trusted supplier with whom I have a long relationship, but there is no guarantee card. I do not recommend this to anyone who feels even slightly uneasy. As it is a natural stone, there may be cracks, inclusions, natural dents, black spots, color unevenness, and fine scratches. Natural stone Natural stone bracelet Golden Lemurian Seed Lemurian Seed Crystal Rare stone Power stone