Here is a superb Calcite specimen of shocking gemminess, that features a large, 6.5 cm "dogtooth" scalenohedron from the rick mines of the Daye area near to Wuhan, China. The handsome crystal is glassy, gemmy, and colorless so that you can look through much of the crystal, especially at the termination and around the edges. We have never seen such a clean, jewel-like, water/ice-clear example of this find from this location. The central portion of this Calcite is mesmerizing with its criss-crossing cleavage traces that reflect light from every angle. It is sharply terminated to a point and contacted on the other end (not broken), and you can see a twin plane near the base. Smaller, sparkling whitish Calcite crystals cover much of a brownish red, Hematite stained piece of adjacent matrix. Very aesthetic, well composed specimen overall - for the size, competitive in any collection. And the Calcite crystal is pristine! This is likely from the older finds here of the early 2000s, shortly after this wollastonite mine opened and they encountered some few pockets of gem calcites at contact zones where the wollastonite seams (2-15 feet thick) border the host rock. I have been underground here, and seen the old pockets still in the ceiling, on the 180 meter level if i recall. These gem specimens were lucky byproducts of the wollastonite mining, following seams underground in a vast and modern tunnel system. The amount of tunnel between pockets is shocking - these were like finding a needle in a haystack!