Add sn special touch to your necklaces with our birth stone charm, available in 12 colors for each month and the metal color availables are: Rose gold, gold and silver so you match with your necklace or bracelet. This item is not sold alone, it's an add on. If you want to buy this single piece, contact us. Size: 6mm Materials: Gold plated over stainless steel. 12 stone colors available, 1 color for each month. HOW TO ORDER: 1. Select your finish (rose gold, gold, silver) 2. Select your amoutn. (how many charms) 3.Enter in the personalization box, the color/month for your stone. If you add multiple, they can be mixed. Since this is an add-on, please provide the instructions to add this to your necklace 4. Add to your cart. 5. Checkout.