The geodes are pieces of minerals usually spherical but also exist in other, more irregular forms, may appear in igneous or sedimentary rocks, are generally hollow in its interior and exhibit crystal formations, commonly quartz, pointing toward the center, although occasionally the growth of minerals in it comes to fill the cavity completely, when this happens, the geode is appropriately named scepters. The geodes on display on the outside texture colorful little rough but they are open or cut by half, luster and grain crystalline formations of great beauty.

The cathedrals are large geodes of different shapes of the geodes, usually exhibit crystal formations of quartz prisms on the inside, are pieces that are cut by half due to a very beautiful crystals that contain within them, as in the case of the clusters, they are used as decorative elements and “harmonic”.

The points are crystalline formations,  usually quartz crystal, amethyst or pink, which by their size, stand out from the rest of the crystals in one piece, so a tip should be emphasized by its size, color and purity, features not always found together in one piece, which makes them special and relatively rare.