Custom Birth Moon® Necklace by Little Gem Girl. This necklace is truly out of this world! With a spin, it reveals a different moon phase on each side, accented with shining rhinestones. Perfect for keeping special moments close to the heart. Plus, it glows in the dark for an extra touch of magic. Give it as a gift and watch them light up! Birth moon cards are included which provide information about your moon phases for easy reference. Metal Finish: Silver Plated with Rhinestone accents Size: Moon images are 20mm (.76 inch in diameter), Pendant size is 28mm (1.1 inch in diameter) Chain: 18 or 24 inch link chain with lobster clasp Moon images are fused to a thick crystal clear glass dome which provides a 3D effect that is truly lovely GLOW IN THE DARK: This Custom Birth Moon® 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. We've used a very high quality long lasting glow mixture which reaches full charge in about fifteen minutes of sunlight or strong florescent light (such as kitchen light or UV light---UV light will give a fast charging ultra bright glow). Gorgeous ice blue glow will diminish over time, but can be charged over and over again for years to come. Glows brighter and longer than traditional glow powders or paints.