Nature sometimes provides us with exquisite glimpses into the phases of growth of mineral pockets! In this case, colorless, transparent, lustrous, rhombs of calcite, to .8 cm across, have formed around a single sphere or botryoid of rich, green malachite, measuring 2.0 cm across. In fact the calcite rhombs nearest the malachite are partially invested with lighter green malachite inclusions. Truly a little gem!