beautiful colored brittle bismuth hopper crystals with stairstep structure on a white background

bismuth crystal metal colored chemical element rainbow chemistry gem structure white background iridescent closeup diamagnetic mineral colorful gemstone semiconductor material precious geology science collection pink golden design hopper stairstep heavy metallic alloy brittle artificial bi oxidation oxidised surface rare pure nature stone mineralogy industry rough jewel hobby beautiful specimen two pieces object geometric pattern light interference blue yellow side view synthetic distinctive raw jewelry stain metallurgy uneven business decorative shiny orange green purple