Quartz is the most common mineral on Earth. It has a hard glassy surface and occurs in many shapes and colors. Clear quartz is found in masses, in clusters or aspoints, which are pieces of clusters. Quartz generates an electrical charge and has many scientific, industrial and metaphysical uses. Quartz can manifest in a huge variety of different forms, each with its own color. This particular specimen is an example of smoky quartz, which is a is a grey, translucent variety of quartz. It ranges in clarity from almost complete transparency to a brownish-gray crystal that is practically opaque. Some can also be black. Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon, formed from the silicon dioxide by natural irradiation. This beautiful example of smoky quartz is a must for comprehensive personal rock and mineral collections or for the classroom, and constitutes a unique decoration for the home or office.
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.
Create beautiful art with this amazing sun paper!
The large realistic model has removable organs that can be studied and set back into the correct position.
Get one of the craziest and coolest kaleidoscopes around!
This toy combines the wonders of Sea Monkeys and glow-in-the-dark fun, all in one!
The cards show the name of the element, the atomic number, group, natural state and common usages!
Great reference card for chemistry and physics students.