sapphire

Diamond simulants, like cubic zirconia and moissanite, often appear in jewelry. See how the properties of real diamonds compare with popular…

Learn how diamonds formed geologically and how they became the virtual standard for engagement ring stones in this brief history of diamonds.…

Celebrate your unique love story with an opal engagement ring stone. Though opals require extra care, no other gem combines color and fire the way…

Opals and pearls have special setting, cleaning, and storage needs. Our opal and pearl care guide will help you keep your jewelry beautiful.

In brighter light, such as sunlight, this tourmaline looks like a deep blue sapphire with a secondary green tone. I purchased the rough stone from…

Gem faceters and jewelry enthusiasts alike should learn about gemstone toxicity. This table has toxicity ratings for 280+ gems, based on their…

Introduced in 1960, the classic princess by A. Nagy was an economical cut for flat diamond crystals. However, this popular design doesn’t lend…

Although many gems show a cat’s eye effect, when the term “cat’s eye” is used alone, it always refers to the rare gemstone chrysoberyl.…

Discover the rare and mesmerizing alexandrite gemstone. Learn all about the incredible color-changing properties, value factors, and origins…