This mineral is made up primarily of only one element—bismuth—and is therefore known as a native element. Bismuth (Bi), with an atomic number of 83 on the periodic chart, is the heaviest element that is stable and non-radioactive. Bismuth crystal, with its unusual structural formation, often resembling a temple or a ziggurat, does not occur in nature. They have to be grown from molten bismuth in a laboratory under controlled conditions. As the bismuth cools, the atoms arrange themselves in this interesting crystal lattice. The iridescent coloration of the bismuth crystal is caused by natural oxidation. Bismuth is used commercially in medicines, pigments, and low-melting-point alloys. This particular specimen finds its origins in Europe. The incredible variety of color and structural variation means no two bismuth will ever look exactly alike, and the exciting appearance of the crystal is sure to spark imagination and enthusiasm. Makes an excellent gift for children and adults alike, and makes an excellent addition to any geology instructor's mineral collection.
These goggles meet the American National Standards Institution (ANSI Z87.1) and Canadian Standards (CSA Z94.3) regulations.
Large nitrile exam gloves designed and manufactured for superior protection against viral, bacterial, and certain chemical hazards.
These goggles meet the ANSI Z87.1, 2010 High Impact standards.
Recommended for protection against chemical splashes. A must have for every young chemist!
Durable, anti-fog safety glasses that fit comfortably on any head size.
Extra-small nitrile exam gloves designed and manufactured for superior protection against viral, bacterial, and certain chemical hazards.
See the solar system in action!
Illuminate both your room and your mind with this ingenious Periodic Table Lamp.
Learn how solar cells transform light into electrical energy with this great kit!
Learn about hydrogen fuel cells with this incredible kit!
This glass Erlenmeyer mug makes an excellent gift!
The Hoberman Sphere expands and contracts with a magical motion so fluid and simple that kids can't help but play with it for hours.
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