335 carats of graduated natural and quite clear Herkimer Diamonds. (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 unbelievable clairty! An absolute rarity. 16 1/2 inches plus a 2 1/2 inch extender.