Choice material of unusual coloured, BLUE Celestine contrastful set on lemon yellow native Sulphur from the famous Polish locale Machow Mine of Tarnobrzeg in Silesia. The Celestine crystals here are superbly defined, very sharp edged and partly gemmy. No significant imperfection so far I can see to this super aesthetic contrastful and colourful specimen. I have not seen more than a handful of pieces over the years and this is the first one we are handling. This is a KILLER PIECE all the way and suitable for highest aesthetic demands.