Jewellery associated with the Chinese culture is synonymous with Jade. Carvings made from jade have been the most highly regarded throughout Chinese history and have been dated as far back as the Neolithic era where it was believed to have spiritual and magical qualities. For thousands of years Jade has adorned the most powerful Chinese as a symbol of their moral integrity, and accompanied them in the afterlife to comfort their souls. With this unusual and prolonged interest in a single material, the craftsmanship and artistry associated with Jade ornaments and jewellery is without comparison in other cultures.
With a hardness of 6 to 6½ on the Moh’s scale, the emerald green colour Jadeite is still considered one of the most valued gems. Early on, however another type of Jade called Nephrite was often used instead of Jadeite, because it was less hard and was therefore easier to carve.
Pure jade is a colourless or milky non-transparent material, yet presence of trace elements such as Chrome, Iron or Manganese produce a beautiful spectrum of Jade colour variations ranging from the popular emerald green colour, to brown, violet, lilac , pale green, red, orange and sometimes also blue.
Hundreds of years ago, Jadeite, Nephrite, Serpentine and Aventurine Quartz were all covered by one Chinese word “Yu” which today specifically refers to Jadeite and Nephrite. The name “Yu” has a broad reference and means: “noble”, “pure”, “treasure”, “jewel”, or in general, “a stone which is worth polishing”. It was not until the 1800’s that the differences between Jadeite and Nephrite were discovered and the two materials found to be distinctly different species of minerals. Today in China, Jade ornaments and jewellery remain the most popular gifts for couples making a mutual commitment or for those wishing for good fortune.
Tanja M. Sadow G.J.G.
Dean and founder of the Jewellery Design and Management International School
Frequently asked questions
What is the difference between Jadeite and Nephrite?
Jadeite, with its emerald green colour and hardness of 6 to 6½ on the Moh's scale, is still considered one of the most valued gems. Early on, Nephrite was often used instead because it is less hard and therefore easier to carve; the differences between the two were only discovered in the 1800s.
What does the Chinese word 'Yu' mean?
Hundreds of years ago Jadeite, Nephrite, Serpentine and Aventurine Quartz were all covered by one Chinese word “Yu”, which today specifically refers to Jadeite and Nephrite. The name means “noble”, “pure”, “treasure” or “jewel” — in general, “a stone which is worth polishing”.
What gives jade its colours?
Pure jade is a colourless or milky non-transparent material. Trace elements such as chrome, iron or manganese produce the spectrum of colour variations, from the popular emerald green to brown, violet, lilac, pale green, red, orange and sometimes blue.
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