This necklace is made to order for the person you love. It is made out of 22 gauge sterling silver and is 1/2 inch in diameter. You can add the birthstone for each child. All I need to know is the initials and the month they were born. I can also add charms if you have any special interests. ( leaves, feathers, cross, owl, birds, etc.) This Price is for 2 charms. Each additional charm is $10.00 and $2.00 for each additional birthstone.