Crystals Rocks Minerals to Tempt and Tantalise You



Jadeite and Nephrite Jade


jadeite jade rough stone

Two Minerals Both Known as Jade

Nephrite and jadeite are two different materials both of which are commonly referred to as jade.  Whilst both are metamorphic rocks, nephrite is made up of the minerals actinolite and tremolite whereas jadeite is made up almost exclusively of the mineral jadeite.  Jadeite is rarer and considerably more expensive than nephrite.  Both can have a strikingly similar appearance and unless you're an expert it can be exceptionally difficult to distinguish one from the other.

The confusion dates back to the sixteenth century and stems from a misprint in the translation from Spanish to French of the original name of the stone but despite this, the common term jade persisted and is now so entrenched in common language that it would be far too difficult to start differentiating one from the other.  Nephrite jade and jadeite are both tough materials and in fact nephrite is one of the toughest known substances.

The Chinese have been producing jadeite for over 5000 years but it's known to have been used by man for at least 10,000 years. Jade is an integral part of Chinese life and culture and some of the earliest recorded events are inscribed on nephrite tablets. Nephrite or nephrite jade as it's most commonly referred to is the more common of the two.



section of rough nephrite jade stone



Large deposits of nephrite jade can be found in Northern British Columbia in Canada and material from this region is often referred to as Canadian jade.  Canada supplies 90% of the stone used for lapidary purposes across the world.

The photograph at the top of the page is jadeitite which is made up almost completely from the mineral jadeite.  The second is nephrite jade.  Both photos are clickable and redirect to the original image.  Courtesy of James St John. 



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