sapphire

Wearing gemstone cufflinks is a great way to add personality and style to a standard tuxedo. Learn how to choose gems for both formal and casual events.…

Natural alexandrite is popular and rare, which creates a market for synthetics. But is lab-created alexandrite real alexandrite? Learn the facts…

Not sure what your gem is? Try these 13 at-home tests to spot a fake diamond — and learn what these tests really mean. Or, take it to a lab to be 100%…

What’s the best abrasive for polishing natural gems? An oxide polish is usually the best option. Learn the different uses of oxide and diamond polishes.…

Gemologists use several different gem classification methods. Learn how the most common systems work and what they cover as well as exceptions…

Need insurance for your jewelry? You’ll need jewelry and gemstone appraisals. Learn what info they should include and who to trust with your…

Learn the difference between allochromatic and idiochromatic gems and why some gem species can occur in many color varieties and others occur…

Opals are in a class by themselves. As a species, opal is so unique it has its own descriptive vocabulary. More than any other gem, each opal is distinctly…

Discover everything about amethyst gemstones — from their meaning and properties to color variations. Learn about this purple February birthstone’s…