Set of three laboratory-grown Bismuth crystal specimens displaying classic stepped hopper growth and natural metallic iridescence. Well-developed geometric structures with strong color zoning. Bismuth crystals are produced by controlled cooling of molten bismuth and are appreciated for their distinctive skeletal growth and vivid surface oxidation colors. Details – Mineral: Bismuth (laboratory grown) – Number of specimens: 3 – Sizes: • 6.7 × 4.6 × 2.9 cm – 94 g • 4.8 × 3.6 × 3.5 cm – 79 g • 4.0 × 3.7 × 2.0 cm – 62 g – Total weight: 235 g Condition Excellent overall condition. Minor natural edge irregularities from growth and handling possible. No restoration. Specimens will be carefully packed for safe international shipping.