Customizable Option: 1. Color. We offer you a choice of four colors, silver, gold,black and rose gold. 2.The Date on the calendart part 3. the message on the circle part 4.the color birthstone.Usual we will use the birthstone which color is match to the month you choose,but you can also choose the color you like. ShippingAllow 2-3 days to have the necklace customized.Standard shipping: 7-10 business days After Shipping.Expedited Shipping: 3-5 business days After Shipping. Require Phone# . Excellent for - Wedding Favours, Save the date, Invitation, Table Gift, Anniversary Gift, Bridesmaid Gift, Couples, New Parents, New Borns, Girlfriend, boyfriend, Graduates, Teacher, Housewarming Gift and so much more! We will make it carefully according to your requirements, the items you purchase may not have the same one in the world.