Calcite is the most common mineral next to quartz. Optical calcite is less common. It is shaped sort of like a rectangle which has been stretched (a rhombohedron). It is clear with a glassy luster and makes objects placed behind it appear double (due to different indices of refraction of light it has). Flawless specimens are used in optical instruments.
Great for science projects or classroom collection.
Please be aware that this is a natural mineral and as such each piece is one of a kind! The one you receive may not be exactly the same as the ones pictured but it will be similar. Price is per each piece.They come in irregular shapes, sizes and weights.
These goggles meet the ANSI Z87.1, 2010 High Impact standards.
Highly durable lab apron made of rubberized cloth is impermeable and easy to clean, perfect for all manner of lab or classroom experiments
Large nitrile exam gloves designed and manufactured for superior protection against viral, bacterial, and certain chemical hazards.
These ear plugs are made of self adjusting foam that provides a comfortable, low pressure fit and excellent sound filtration.
Extra thick medical examination gloves - 60mil. Great for extra protection.
Durable, anti-fog safety glasses that fit comfortably on any head size.
Great reference card for chemistry and physics students.
This quality Dobsonian style telescope features a 76 mm aperture reflector optical tube.
This classic desk toy will keep you amused!
See the solar system in action!
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.
A combination of three of our great discovery toys, all in one package!
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