Don't overspend on diamonds. Check out our diamond clarity chart to learn about the four most important factors impacting a stone's value.
Diamond buyers often want to know which of the Four Cs of gem grading is most important — color, clarity, cut, or carat. However, these qualities aren’t as distinct as they seem. Learn more about diamond color and how it affects the other qualities as well as overall value.
Diamond buyers often want to know which of the Four Cs of gem grading is most important — color, clarity, cut, or carat. However, these qualities aren’t as distinct as they seem. Learn more about diamond carat weight and how it affects the other qualities as well as overall value.
We live in a world of crystals. You don’t have to dig deep into the Earth to find them. Even the bones in our bodies and the dust in the air contain them. Learn more about crystalline minerals and gemstones as well as the crystals that grow in living beings.
With only a few produced each year, pink diamonds are among the rarest gems on the planet. Learn how quality impacts cost for these rarities in our fancy colored pink diamond buying guide.
Blue diamonds are among the rarest and most prized diamonds. Our blue diamond buying guide will help consumers understand the value factors for these gems.
How well do you know your birthstone gemology? Take our short quiz and learn about the composition, cutting, and value of birthstones.
What constitutes a princess cut? Jeff Graham examines a variety of diamonds sold as examples of this design and identifies their overall characteristics.
Fancy colored yellow diamonds are becoming increasingly popular. Our yellow diamond buying guide has the information you need before your next purchase.
Mechanical gemstone cleaning has benefits and risks. Learn all about ultrasonic, steam, and boiling systems and how gems might react to them.