Mineral/Rock

Nephrite Jade (or Serpentine)

Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals

AI-generated identification · may be incorrect

Given the appearance in the image (deep green color, waxy luster, and what looks like a polished specimen), this is most likely Nephrite Jade. However, green serpentine can have a very similar appearance, especially when polished, and is often mistaken for or sold as jade.

Identified October 9, 2025More mineral/rock →

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Physical properties

Formation & geological history

Nephrite jade forms in metamorphic rocks under high pressure and relatively low temperature conditions, typically associated with serpentine. Serpentine forms through the metamorphism of ultramafic igneous rocks (rich in iron and magnesium) where water reacts with minerals like olivine and pyroxene (serpentinization).

Uses & applications

Nephrite jade is prized for ornamental and sculptural purposes, including jewelry, carvings, and decorative objects. Historically, it was used for tools and weapons due to its toughness.

Geological facts

Nephrite is one of two distinct minerals known as jade (the other being Jadeite). While Jadeite is generally harder and available in a wider range of colors, Nephrite is renowned for its exceptional toughness.

Field identification & locations

Jade has been culturally significant in many ancient civilizations, particularly in East Asia (China) and Mesoamerica, where it was revered for its beauty, durability, and symbolic meaning (e.g., immortality, purity, royalty).

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