Natural emeralds almost always have internal flaws, known as inclusions or the jardin (French for "garden"). Unlike diamonds, minor inclusions in emeralds are accepted as proof of a natural stone. Look for high transparency and avoid too many dark inclusions.

A great cut maximizes the color and brilliance. Emerald-cut (rectangular step-cut) is popular because it reduces stress on the gem during cutting, minimizing fractures.

Emeralds are among the most valuable gemstones in the world, sometimes exceeding diamond prices, especially when they possess intense color. They are known for their deep green hues, representing rebirth, love, and protection. Because they are almost always treated to improve clarity, a high-quality emerald is a precious, lasting investment. 2. The 4Cs of Emeralds: What to Look For