Jade

The two minerals called *jade* are mineralogically distinct: *nephrite* is a tremolite-actinolite amphibole; *jadeite* is a pyroxene. The European confusion of them dates to the 1860s, when French mineralogist Alexis Damour established the difference in *Comptes Rendus de l'Académie des Sciences* (1863). Both are unusually tough — meaning resistant to fracture rather than scratching — because of their fibrous, interlocking microstructure, which is also why they take a high polish without splitting. In Chinese tradition, jade (玉, *yù*) was assigned moral significance from at least the Confucian period. The *Liji* (*Book of Rites*, ~3rd century BCE) records Confucius attributing six virtues to jade's physical properties — soft sheen for benevolence, fine grain for wisdom, firmness without sharpness for justice, suspension without bending for courtesy, even sound for music, no flaw concealed for truth. In crystal-healing practice, jade is associated with the heart chakra and treated as a nurturing, harmonising stone for self-compassion and emotional steadiness. The 'bonds with the wearer' claim is traditional folk-belief rather than physics.

Chinese jade carving dates to the Neolithic Hongshan culture (~4700–2900 BCE), with sophisticated ritual *bi* discs and *cong* tubes from the contemporary Liangzhu culture (~3300–2300 BCE) — both archaeologically attested across the Yangtze and Liao river basins. The *Liji* (~3rd century BCE) records Confucius's six-virtues attribution. Mesoamerican jadeite use is documented from the Olmec civilisation (~1500–400 BCE) at sites including La Venta, and through the Classic Maya period (~250–900 CE) where it was buried with rulers — Pakal's funerary mask at Palenque (c. 683 CE) is the best-known example. Mesoamerican jade came almost exclusively from the Motagua Valley in Guatemala. The European mineralogical distinction was made by Alexis Damour in 1863. Modern Burmese jadeite from Myanmar's Kachin State entered the Chinese market in the 18th century and now dominates the high-end trade.

Match the type to the use: nephrite is more durable and traditional for carving and daily-worn jewellery; jadeite is the higher-prized 'imperial jade' and often more expensive per gram. Genuine jade is heavy for its size, cool to touch, and produces a clear ringing tone when struck — common imitations (serpentine, dyed quartzite, green glass) feel lighter and warmer. Check Mohs hardness if uncertain (a steel pin should not scratch it). Reliable suppliers publish a GIA or Gübelin Lab gemmological report for high-value pieces. For working with the stone as a meditation cue or chakra-associated object, keep it where you'll see it daily — the function depends on repeated attention, not on metaphysical bonding.