Diamonds, rubies, emeralds, and sapphires are most of the classic gemstones adorning royal jewels. But they used to be accompanied by a stone that nowadays is most often found in museum gift shops: Amethyst. Here's the story of...

Montana sapphires come in a beautiful array of colors found in a few other places in the world. But geologists have no idea where they originated.<br/>

In November 1986, Australian miners climbed Lunatic Hill and bored 20 meters into the Earth. They were rewarded with a fist-sized, record breaking gemstone, which they named the Hailey's Comet opal. Thanks to a characteristic called...

Hank talks about a shiny element that has fascinated humans for millenia.

There are still lots of unsolved mystery about carbonados ("black diamonds"), and geologists even think those mystery rocks come from outside of Earth.

You may think oysters taste kind of gross, but did you know that some of them hide rare gemstones?

Hank reveals the latest discoveries, including a way to make new, beating heart cells, ancient Egyptian jewelry made from meteorites, and the first mammal to be discovered in the Americas in 35 years, the adorable olinguito.

Lifelong friends Sanjana and Nandini are raising money for children with cleft lip and palate by selling handmade charm bracelets for $5 and donating 100% of their proceeds to Smile Train. Thanks to these two teenagers and...

Howcast - You need to know a few things before you walk into a jewelry store to buy that certain something for a certain someone.

Howcast - Buying a diamond ring is one of the biggest investments you’ll ever make, so get the most bling for your buck.

Howcast - Learn about an industrial piercing, aka scaffold piercing or construction piercing, from professional body piercer Dana Dunn in this Howcast video.

Howcast - Learn how to use flex shaft jewelry tools from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn how to cut designs in metal from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn how to sell handmade jewelry from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn how to solder jewelry from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn the basics of soldering from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn about essential jewelry making tools from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn all about jewelry-making hardware from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn how to attach jewelry pieces without soldering from jewelry designer Courtney Gray in this Howcast video.

Howcast - Learn all about nipple piercing from professional piercer Owen Beane in this Howcast video.

Howcast - Learn the two important things you should do after a piercing so it heals correctly from professional piercer Owen Beane in this Howcast video.

Howcast - Learn all about labret piercings from professional piercer Owen Beane in this Howcast video.

Howcast - Learn all about septum piercing from professional piercer Owen Beane in this Howcast video.

Howcast - Learn all about belly piercing, aka navel piercing, from professional piercer Owen Beane in this Howcast video.