This is a Loree Rodkin bracelet. I was collecting these, but due to circumstances, I'm decluttering and selling them. I've forgotten the type of stone. It looks black at first glance, but it has transparency. I think it might be gray tiger eye? Or eagle eye? But this is just my personal opinion. I've categorized it as women's, but it can be worn by men if the size fits. The elastic doesn't feel very weak, but this is just my amateur assessment. Please understand that this item has been in someone's possession before. Measurements, inspections, and storage are done by an amateur, so there may be errors or oversights. Please understand. I am working, so it may take time to respond or ship. Please be aware of this. I cannot guarantee against damage due to impact during shipping. Even if set to "Rakuraku Mercari Delivery," I may change to "Yuyu Mercari Delivery." The packaging will be simple, using recycled materials.