A striking and very pretty, 3-dimensional specimen of two generations of calcite crystals included with variable shades of red hematite microcrystals from one of the famous mines at Santa Eulalia, Mexico. The three large, to 1.5 cm, partially included, transparent calcite rhombs really highlight this fine piece, which reminds me of the famous copper-included calcite crystals from Onganja, Namibia. Ex. Wesley Stark Collection.