Gemology

Hobbyists and jewelers alike rely on rock tumblers to smooth and polish the surface of rough-cut stones thanks to abrasive technology. Abrasive technology involves the use of materials such as...

Stone marbles are part of many game-playing traditions, both ancient and modern, from all across the world. In Germany, they are made by breaking up hard stone into small pieces and grinding off...

Rock tumbling is the process by which gemstones are polished. The stones are placed in a barrel that is mechanically rotated. Small material that is very hard and coarse, called grit, is placed in...

Rock polishing grit is made of silicon carbide, a substance harder than most rocks. It is much the same as silica sand, a sand used in sandblasting with a primary component of quartz. Polishing...

Rock tumbling is a popular hobby. A rock tumbler is a motorized barrel that turns the stones over and over in compination with a sanding grit. This process takes rough stones and creates...

Polishing cut rocks is a rewarding experience; you get to take something that is dull and make it shine. How you polish rocks will depend on what type of rock you are polishing. Soft Rocks such...

Colorful rocks can be a decorative addition to your home environment. Today you can find beautifully polished rocks added to a number of home decor, be it candles, flower vases, or yard...

Rock tumblers mimic the natural forces of nature to wear down and polish stones until they are shiny. The most basic kind of rock tumbler is a rotary rock tumbler. It works by mimicking the...