Green opalescent necklace

Green opalescent necklace purchased in Japan. Measures 15" with extender to 18". Each stone measures 0.5". The color of the stones are really pretty, like a milky chalcedony or opal green with a hint of sparkle because the stones aren't completely clouded. It's surprisingly lightweight for it's size! Only 1.62 oz.! I don't wear this anymore, but I'm hoping someone else will love it as much as I did!