|Posted by Leslie Walberg on March 16, 2013 at 12:20 AM|
How to Test Jade in an Imperfect World. There are only two types of Jade that are considered real Jade. There is Jadeite which measures between 6.0 and 7.0 on the Mohs Sacale of hardness, and there is Nephrite jade which measures between 6.0 and 6.5 on the Mohs scale of hardness. Other materials, no matter how much they look like jade, are not jade unless they meet this hardness criteria. A pocket knife has a blade which measures approximately 5.0 on up to 5.5 on the mohs hardness scale, thus making the pocket knife an excellent tool for testing jade. A pocket knife with it's hardness factor of 5 - 5.5 simply can not scratch genuine jade with a hardness of 6.0 or harder. The downside to this method of testing jade is that if the item you are testing is not jade and is a softer material like Serpentine which is usually the case, your knife will leave a scratch or chip on the item you are testing. In rare cases I have even heard of genuine jade artifacts being mis-tested due to an inclusion of softer material. To sum up all this reteric, A knife scratches Serpentine and other soft stones. A knife does not scratch Jade or other hard stones such as Quartz or diamond. Years of experience tend to help testing jade. The jade pendant and the jade sword slide both test out as genuine nephrite jade. The bangle which looks like jade failed the Mohs hardness test. The bangle is an antique serpentine bracelet. If it is too good to be true than it usually is - just look at all the materials that are mis-represented as jade on ebay - most will have a name such as old jade, tomb jade, or some other interesting phrase meant to distract you from the fact that the item you are looking at is really not Jade at all. Study hard. Look at all the fakes as well as those pieces of jade you know to be good. Trust the reputable dealers with years of good feedback, and be leery of the 90% other junk being called jade. Always test your Jade as like with people, looks can be decieving. Good luck on your quest for good Jade. "Jade in an Imperfect World"
by Leslie Walberg