142 carats of graduated natural Herkimer Diamonds. The clarity on this is fab! (NOTE- this design uses gems with inclusions- this is intentional.) World famous Herkimer Diamonds are beautifully doubly-terminated quartz crystals already faceted by nature. The bedrock in which the crystals are found began forming approximately half a billion years ago in a shallow Cambrian sea that lapped against the southern shores of the ancestral Adirondack Mountains. I prefer to use the pieces just as they come from the ground. Extremely rare, and imperfectly beautiful! This piece has visible tourmaline mixed into the clear and milky gems- stunning! 16 inches plus a 2 inch extender.