Bismuth Specimen in Cloche Glass Jar with Cork Base - Choose your quantity! Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Avg Size Range: (Crystal 0.75 to 1.25 Inches Long, Total height 2 Inches) Sizes Vary Known for its unique geometric pyramid shape, bismuth is normally a pinkish-white metal, only gaining its more commonly-known rainbow coloring after being processed. Aside from its value for collecting, most bismuth is used in various pharmaceutical compounds and as a replacement for lead in industrial applications. Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.