White to ivory seashell necklace. I bought it at an antique shop a few years ago. The clasp is a screw type, making it easy to put on and take off. I believe the beads were made by cutting out seashells and making holes, but I'm not certain. The white to ivory gradation is lovely. I don't know the country of origin or the time it was made. I hope someone who likes the design will continue to use it. It's simple and went well with many outfits, but I haven't worn it recently, so I'm selling it.