sapphire

Amber is the hardened resin of ancient pine trees. This organic substance is most well-known for the incredible inclusions of insects that can…

Can you create and cut a gem design to make the most of a stone’s tilt brightness? Learn whether your gem will benefit from this consideration.

Sapphirines are durable but very rare gemstones. Although named after their typically sapphire-blue color, these gems can occur in different…

Identifying diamonds requires the right equipment. Learn what diamond grading tools novice professionals or hobbyists need.

Satisfying the human desire for symmetry, trapiche gems have a special allure. Learn what makes these rarities so unique in our introductory article.…

A favorite among jewelry designers, tourmaline is a great option for a unique engagement ring. This guide will take you from a tourmaline novice…

Known for stunning, saturated hues, tourmaline is a colorful and modern gemstone. Most tourmalines undergo heat and radiation treatments…

Watermelon tourmaline adds a fun and playful feel to jewelry. Check out our watermelon tourmaline buying guide and learn the quality criteria…

The Usambara effect is the term applied to a type of color change in gemstones, first seen in tourmalines from the Umba Valley in Tanzania. However,…