This is a black diamond bracelet with approximately 4mm mirror ball cut beads. I've only worn it out 3 or 4 times, so it's almost unused. It's a very beautiful bracelet that sparkles and reflects light. I purchased it on Rakuten for nearly 130,000 yen, but I rarely have the opportunity to wear it, so I'm selling it. My wrist is about 16.5cm, and the size has a comfortable amount of space without being too tight. I've also tried importing other black diamond products from overseas, but this one has a more carefully crafted surface and a stunning shine. Thank you.