Crystal Science

Agate, Chalcedony or Jasper - What's the Difference?
So what is the difference between Agate, Chalcedony and Jasper? What are they exactly? Well trade names don't help for a start, but there are easy ...

Crystal, Rock or Mineral - What's the Difference?
If you're new to collecting , or even if you're not, you might be a bit confused about what exactly the difference is between a crystal, rock and a...