Show off your birthday pride with a custom glow in the dark birth moon pendant necklace or key chain charm! Make a statement with a design that's truly unique to you, featuring the exact moon phase from the day you were born. It's the perfect way to show the world you were born under a shining star! Makes a great gift for mom on Mother's day so she can wear the moon from her child's birth date! This Custom Birth Moon® necklace or key chain glows in the dark and has a luster finish which makes the moon appear to shimmer! Tell us a date that is special to you (birthday, anniversary, adoption, memorial, etc) and we'll create a moon phase charm from that night. Moon needs to be "charged" to make it glow. Sources: sunlight or strong florescent light (such as kitchen light or UV light---UV light will give a fast charging ultra bright glow). Gorgeous glow will diminish over time, but can be charged over and over again for years to come. SIZE: Pendant is 16mm (.63 inches) or 20mm (.75 inches) or 25mm (1 inch) METAL FINISH: Available in silver, antique copper or antique bronze. STYLE: Choose this as a Necklace with an 18 inch or 24 inch chain or as a Keychain with a key ring attachment. High quality realistic moon image is fused securely and permanently behind a thick glass round bevel. CARE INSTRUCTIONS: : Remove before bathing, swimming and water activities. Water resistant but not water proof.