Crescent Moon Galaxy Universe Cabochon Pendant Necklace,moon and Star Necklace,moon Necklace,blue Galaxy rescent Moon Galaxy Universe Cabochon Pendant Necklace The size of the pendant (the moon and the glass) is about a quarter The chain is 24 inches long.Great for you to wear. If you want a different length,please leave me a note while you are ordering.Thanks. Any question,free to contact me.