sapphire

The simple 10X loupe fits in your pocket and costs less than any other piece of gemological equipment. You’ll learn more with it than any other…

In a recent phone interview, gemology tools expert Cara Williams of Stone Group Labs discussed the myriad tools available to gemologists today.…

People often ask me about gem identification. More specifically, they ask me to identify their gems. Some think I can do this simply by looking at…

You’ll have to make many decisions when you choose a diamond for your engagement ring. Here are nine things you should know before buying a diamond.…

The optical properties of gems attract our eyes and can give a cut stone a unique character. However, gemstone physical properties are also important.…

If you like the diamond look but want something different, learn the pros and cons of these white gems and find the right mined-diamond alternative…

Explore the amazing world of gemstone photomicrography. These tips can help you view and photograph spectacular inclusions found inside many…

Corundum gems receive more types of treatments than any other stones. Learn how to test rubies and sapphires for signs of these enhancements.

Learn how to spot diffusion treated gems with a simple immersion test. This common treatment for sapphire can significantly reduce their value…