Green Nephrite Jade

Green nephrite jade is a type of jade composed of interlocking silicate minerals called amphiboles, primarily actinolite and tremolite. You'll identify nephrite by its distinctive smooth, slightly oily appearance and remarkable toughness. The green color varies widely, from pale celadon to deep forest green, and the stone has a hardness of 6 to 6.5 on the Mohs scale. Despite its lower hardness compared to jadeite, nephrite is actually tougher and more durable for everyday wear because of its granular structure.

To authenticate nephrite jade, test it by holding the stone up to light. Genuine nephrite will appear slightly translucent at the edges when light shines through thin sections, with a subtle glow. Nephrite has a specific gravity of 2.9 to 3.0, making it noticeably heavy for its size. You can distinguish nephrite from jadeite, marble, or soapstone by its texture and weight. A gemologist can perform a refractive index test or examine a sample under magnification to identify the characteristic granular structure of nephrite.

Green nephrite jade ranges from $5 to $50 per ounce depending on quality, color, and translucency. Exceptional specimens with vibrant color and superior carving quality can cost $100 to $300 per ounce. Polished pieces and raw chunks are typically in the $10 to $40 range. Carved items command prices based on workmanship and material quality, often ranging from $50 to $500 or more for larger, finely carved pieces.

Nephrite is relatively abundant, making it more affordable than jadeite. High-quality nephrite with desirable color and translucency is moderately scarce. New Zealand nephrite (greenstone) is particularly valued and commands higher prices than Chinese or North American sources. The market has good availability of nephrite because production continues from multiple countries. You won't have difficulty finding nephrite, though sourcing premium examples requires patience and knowledge.

Green nephrite jade comes primarily from New Zealand (particularly the South Island), China, Canada, Russia, and parts of Central Asia. New Zealand has a rich tradition of nephrite carving dating back centuries. Chinese nephrite production is substantial and historically important, with sources in Xinjiang and other western regions. Canadian nephrite comes from British Columbia, while Russian deposits are found in Siberia. Each region produces nephrite with slightly different characteristics and color ranges.

Nephrite mining practices vary by region. New Zealand mining is relatively well-regulated and environmentally conscious. Chinese production has expanded significantly but environmental oversight is inconsistent. When sourcing nephrite, ask suppliers about the origin and whether the mining operation follows fair labor practices. Support dealers who work with established sources and can provide transparency about their supply chain. Nephrite sourcing from New Zealand or Canadian operations typically aligns with higher environmental and labor standards.