Ключевые слова: abstract, adventure, ancient, backdrop, background, beautiful, calcium, cave, color, colorful, crack, crystal, crystalline, dark, deep, design, detail, fluorine, fluorite, formation, gem, gemstones, geological, grain, interior, landscape, layer, light, limestone, material, mineral, mineralogy, nature, old, pattern, purple, rock, shape, specimen, speleology, stalactite, stalagmite, stone, stony, streak, striped, surface, texture, variegated, violet,