Crystals of gallium. The chemical element gallium is a rare, soft silvery metallic poor metal. It occurs in trace amounts in bauxite and zinc ores. Gallium is notable for its stunning silvery color and its solid metal fractures conchoidally like glass.
Ancient Egyptian blue glass beads reached Scandinavia
A chemical analysis pinpoints Mesopotamia as the source of this glass bead, featuring inlaid eyes of yellow and white glass. The bead was discovered in a Danish grave. Mikkelsen, National Museum of DenmarkNews
sixpenceee: Bismuth Crystals are beautiful. They have an interesting geometric form and are rainbow-colored from the oxide layer that quickly forms on them. Here’s a website that has instructions on how to make them. (Source: sixpenceee, via accio-peace)
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Boron is found in the common mineral borax, but is rarely seen in pure form, as in these polycrystalline lumps. While extremely hard, boron is too brittle in pure form to have any practical applications.
Here's What the Chemical Elements Look Like in Pure Form