closeup of a polished agate gemstone showing intricate patterns and vibrant colors for natural stone decoration

agate gemstone polished colors patterns natural stone decoration red orange white banding smooth oval jewelry design mineral collection vibrant intricate closeup texture geology crystal gem quartz striped lapidary semiprecious rock carving artistry unique ornamental earth beauty specimen material solid surface background antique earthstone mineralogy formation exhibit resources hobby fossil treasure stonework artifact adornment ai generated