Ключевые слова: background, beautiful, black, calcite, calcium, carbonate, cave, clear, collection, crystal, deposit, edge, face, gem, geology, glass, glitter, gloss, group, igneous, inorganic, isolated, jewelry, limestone, macro, marble, metamorphic, mineral, museum, nature, reflection, refraction, rock, rose calcite, scalahedron, sea, semiprecious, sharp, shine, shiny, shot, spar, specimen, speleology, stone, symmetry, translucent, transparent, volcano,