Learning Center

Questions About Gems and Jewelry

Can Diamonds Burn?

Diamonds may form under intense heat and pressure, but under certain conditions, diamonds burn.  Learn the science behind a diamond’s fiery…

Is Uranium Glass Safe To Facet?

Uranium glass, or Vaseline glass, is a prized collector’s item and is generally safe to handle. But is it safe to facet? Learn about the potential…

What Is A Chameleon Diamond?

A classic chameleon diamond can change color from green to yellow under certain conditions. Learn more about this process and other color change…

Sphalerite Appraisal

Learn what factors most influence a sphalerite appraisal and what kind of jewelry will best showcase this beautiful gemstone.

Opal Jewelry Tips

Opal jewelry is lovely, but aren’t these gems prone to scratching and breaking? Learn the best ways to wear these colorful but delicate stones.…

What Is A Reflectometer?

What’s the difference between a reflectometer and a refractometer? If you’re interested in studying or buying gems, learn the facts here.…