What Is Jade? Jadeite vs. Nephrite
Jadeite and nephrite are two completely different minerals, despite both being commonly referred to as jade.
Jadeite is a pyroxene mineral with the chemical composition NaAlSi₂O₆, found mainly in high-pressure metamorphic zones. It is the principal mineral of the most valuable jade.
Jadeite is a sodium aluminum silicate, known for its bright colors, fine grain, and superior translucency. Nephrite, by contrast, is a calcium magnesium silicate with a softer, more fibrous structure and a typically muted appearance. While nephrite has historical and decorative uses, it does not offer the same color intensity or clarity found in fine jadeite.
“Jade” is a trade term that refers to two different minerals— jadeite and nephrite. Jadeite is the rarer, more valuable type used for fine jewelry. Nephrite is a different silicate mineral with different properties.
For buyers in the United States, understanding this distinction helps prevent confusion and ensures accurate evaluation when purchasing jade jewelry.