A gemstone is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks (such as lapis ...
Detailed information and photos for over 100 gemstone varieties from around the world!
Do you know what a gemstone is? Gemstones have many different names. Sometimes, people call them gems. Sometimes, people call them jewels. Sometimes ...
Jun 6, 2013 ... A gemstone is the name given to a piece of mineral (or other rock or organic material) that after it has been cut and polished has been made ...
Gemstone transparency describes how much light passes through a gem and how it scatters. Learn what causes a gem to be opaque, translucent, ...
Learn what gemstone dispersion means, what causes it, and how it relates to other optical effects of gems. Check out some amazing dispersion examples, too.
Even the most general definition of a gem has many exceptions. Learn what qualities have been used to identify gemstones both scientifically and popularly.
Dec 21, 2007 ... What is the difference between a mineral, a rock and a gemstone? You'll find some answers here.
Birthstones are gemstones that accompany a birth month, each having a unique meaning and historical significance. The popularity of birthstones dates back to ...
Interactive guide to the most popular gemstones. ... Welcome to the gemstone section, a free informational reference guide to gemstones, jewelry, and precious ...