This is a fine, gemmy, transparent superb Spanish dolomite specimen. Here you have an exquisite, transparent rhomb measuring 4 cm tip-to-tip, integrown with some smaller rhombs. One of the close-ups shows you the luster and transparency as it appears in person. Dolomite is almost always a plain, unassuming "accessory" mineral on specimens, but in the case of these Spanish ones, it is a gorgeous mineral specimen in and of itself.