I had a similar necklace years ago that was called the River necklace. (my son named River named it!) I wanted a name of something water-ish so Rapids it is. I have included Afghan turquoise, crazy lace agate, ruby, spiny oyster shell, Roman glass, amethyst, labradorite. It measures 18 inches with 2 inches of extender chain. The pendant is green, purple and blue turquoise wrapped in copper and can be taken off if you have day when you want to wear just the necklace.