Turquoise Blue or Bright Blue, 18-inch Dual Strand Necklace, Costume Jewelry, Fashion Accessory, Gold Toned Hook, Made in Japan This is a great find and very collectible. The measurement is on the bottom strand. Check out our shop for monthly specials. We have a variety of items for every taste. Combine several of our items together to save on shipping. If you have any questions please do not hesitate to ask. I will ship outside of the US, just request a quote. Happy Shopping. I will work aroun