Here is a beautiful cabinet size specimen of this Cobalt-bearing Calcite on matrix.

Crystal from micros up to 4 mm cover the front side of this matrix.

The color is some of the deepest I have seen.

Hard to describe the red color, but the crystals all have electric pink edges, some show it better than others.

Only one slight point of contact near the base, the rest that might look like contact in the photos is actually a new generation of tiny colorless calcite crystal.