Beads with a diameter of 18mm are relatively large. If you like the beads to be super large, you can choose 18mm. If you like a slightly lower profile and smaller beads, you can choose beads with a diameter of 16mm. The wrist circumference is 19.6cm. We will make a suitable hairband for you according to the circumference of your wrist. We will also give you spare rope and beads. If it doesn't fit, you can also make it yourself.
Obsidian has a good ability to absorb negative energy, and I hope it brings good luck to you and your family!
I hope you will be satisfied with the answer! I also hope to get your support, Hengtai Feng Shui Flagship Store.