Heart Charm For Dog Collar (27 ratings) Swarovski Crystal Heart Charm £5.50 Quantity: at £5.50 each Add To Basket Gorgeous and stunning heart shaped Swarovski Crystal Charm. 10 Ruby Red and 17 Clear Swarovski Crystals. With a lobster clip to attach to any collar's D-ring. Approximately 3/4" / 2cm wide. Instant beautiful bling to your pooch's collar.