Where is Jade found?
Jadeite or Nephrite
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Open the appJade occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Jade
Myanmar (Burma)
The primary source of high-quality Imperial Jadeite, particularly from the Kachin State. Found in alluvial deposits and in situ within serpentinite-associated metamorphic rocks.
Guatemala
Significant historical and modern source of Jadeite, including various colors like green, lavender, blue, and black. Found in metamorphic terrains.
Russia (Siberia)
Known for high-quality Nephrite, particularly a dark green variety. Found in serpentinite bodies.
New Zealand
Historically and culturally significant source of Nephrite (Pounamu), found in alluvial deposits and in situ within serpentinite-rich metamorphic rocks on the South Island.
Canada (British Columbia)
Major producer of Nephrite, often found in large boulders in glacial till and in situ within serpentinite bodies.
China (Xinjiang, Liaoning)
Historical source of Nephrite, particularly from the Kunlun Mountains (Hotan jade). Also some minor Jadeite occurrences.
United States (California, Wyoming, Alaska)
California is known for Nephrite, often found in serpentinite belts. Wyoming and Alaska also have Nephrite occurrences.
Collecting tips
- Geological Context. Focus on areas known for high-pressure, low-temperature metamorphic rocks (for Jadeite) or serpentinite bodies and metamorphosed ultramafic rocks/dolomitic limestones (for Nephrite). Subduction zones and ancient suture zones are prime targets for Jadeite.
- Associated Minerals. Look for jade in association with minerals like serpentine, glaucophane, omphacite, albite, chlorite, and garnet (for Jadeite) or tremolite, actinolite, talc, and magnetite (for Nephrite).
- Riverbeds and Alluvial Deposits. Many significant jade finds, especially Nephrite, come from secondary alluvial deposits where erosion has concentrated durable jade boulders in riverbeds. Look for smooth, rounded, dense stones.
- Density Test. Jade is notably dense. A simple 'heft' test can help distinguish it from lighter look-alikes. For more precision, a specific gravity test is definitive.
- Toughness, Not Hardness. While not exceptionally hard (6-7 on Mohs), jade is incredibly tough due to its interlocking microstructure. It resists breaking and chipping. This can be a subtle indicator.
- Sound Test (for large pieces). High-quality jade, when gently struck, can produce a clear, resonant, bell-like sound due to its density and toughness. This is more applicable to larger, well-formed pieces.
Quick Check
- Color:
- Green, white, lavender, yellow, black (variable)
- Luster:
- Vitreous to greasy/waxy
- Streak:
- White
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