The Celtic heart represents the source of all emotion, and is a symbol of love, desire and courage. These exquisite earrings feature a richly faceted amethyst stone. On sterling silver posts. Amethyst is February's birthstone. Kit Heath: Beautiful Jewelry. (Dim: 18mm long, 7mm x 8mm stud, 4mm x 2mm stone). For over twenty years, Kit Heath has pursued his passion for design, creating elegant fashionable sterling silver jewelery for all occasions - from the casual and light-hearted to the sophisticated and sensual.