closeup of hopper crystal of bismuth chemical in colored iridescent background

bismuth metal crystal texture background colored closeup mineral chemistry macro chemical element bi diamagnetic semiconductor material detail precious stone gem gemstone synthetic pure metallic blue hopper structure heavy alloy brittle superconductor oxidation oxidised surface rare raw natural science high purity geology metallurgy industry collecting business copy space iridescent appearance rainbow beautiful pink purple brown black shiny thermoelectric rough patch uncut rock mineralogy jewel specimen design cubic interference light geometric pattern luster colorful beige blur