Glass dome cabochons for 8 mm settings pack of 10 Glass dome cabochons for 8 mm settings, earrings, jewellery making £0.50 Quantity: at £0.50 each Add To Basket These clear glass domes are perfect for jewellery making, earrings, bracelet charms etc. They are 8 mm round. I have matching earring stud setting trays in my shop. These are small domes. Price per pack of 10.