Rocks Slabs and Specimens › Calcite crystal Image 1 of 3 Image 2 of 3 Image 3 of 3 Calcite crystal $15.00 Mexican calcite crystal, acid washed, olive green. 3.5” x 2.5 x 4”will free stand upright. Add To Cart Added! Mexican calcite crystal, acid washed, olive green. 3.5” x 2.5 x 4”will free stand upright. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More