Gemstones, including rubies, emeralds, and sapphires, can be sold for cash, much the same as diamonds and other jewelry. However, more often than not, those stones have very little resale value, ...

The world’s biggest cut gem aquamarine, known as the Dom Pedro, is now on display at the Smithsonian in Washington, D.C. Take a look.

The Dom Pedro Aquamarine is one of the largest mineral crystals found inside Earth’s rocks. Abigail Eisenstadt Dom Pedro aquamarine was cut from a 100-pound crystal that was mined in the late 1980s.