Totally limpid, with superb form, this glassy and gemmy, colorless "butterfly twin" calcite specimen looks at first like it exhibits the very best characteristics possible from the great Cumbrian ore fields and is as much a "jewel" in appearance as any I have seen. However, it has shallowly cleaved edges on either side, whether done on purpose or not in the distant past I cannot say. It therefore looks like a million bucks, but with the edges missing, even though it presents so nicely and is such a gemmy and unusual piece, it should not be valued as it would otherwise (I valued it over $1000 in my purchase, before making a closer examination). Still, it is what it is - and these are so few and far between now, that at the adjusted price it is still a meaningful piece.