Rondelle beads. These have a disc or doughnut form, as well as width has a tendency to be greater than the peak. They're comparable to donut beads, which are donut-formed with a larger gap in the middle. I used to be pleasantly surprised by the standard of these sunglasses from https://spoilmevintage.co.za/2024/10/31/unlock-the-secret-to-stunning-styles-with-temus-yellow-beads-you-wont-believe-the-looks-you-can-create/