Anyone with a love of purple or amethyst crystals will enjoy wearing this pair of stud earrings. As amethyst is the February birthstone, they will have added appeal to any lady with a February birthday. Displaying an amethyst crystal with a 3mm diameter, these studs are made from 9ct yellow gold with a 7.5mm Andralok back. Weighing 0.2 grams, the earrings have a pin width of 1mm and measure 8mm from front to back.