There are three things to look for, first is colour & how it got it. The second is translucence. The third is grain & inclusions.
Grades of Jade
This refers to the type of Jade not the quality.
First : Imperial Jade
The Holy Grail Imperial Green Jadeite, dark emerald green and translucent. The price starts around $1200.00 USD per carat. Beautiful dark Emerald green, translucent without, or very few inclusions very rare and very expensive.
Second : A
The A grade Jadeite. Varying in Natural Colour, Green, Red, Yellow,
Lavender Black & White. This is untreated natural stone. However not always
the nicest looking stone you can find. Remember it can be A Grade and look like, well you know what.
Third : B
B Grade, Jadeite mainly found in Hong Kong treated.
That is to say they take out the impurities and replacing with translucent resin
natural good colour that it will not lose. This is what the world is buying whether
they know it or not. This often has no translucence.
But recently I have seen a massive amount of terrible quality in this range.
My rule of thumb here is if I can’t see it, it’s OK.
Fourth : B + C
B + C The same as above but coloured resin is added to enhance the colour
Fifth : C
C Grade, Jadeite treated often badly.
Commercial Quality, It really doesn’t matter much treated and untreated you just pay more for untreated. Again it will keep its colour or at least the product you buy from me will.
Sixth :
Probably not Jade at all of any sort. Probably Quartz dyed.
Dyed horribly for the tourists who obviously wouldn’t know it from a stick of Blackpool rock (a holiday town in the north of England) and will probably lose it’s colour before it goes through your Customs on the way home. However you do get some nice ornaments in good quality green Quartz.
Seventh : Nephrite
Old Jade or the real name Nephrite. Originally found in China but now all over
the world.
This probably should not be under the last item because you can buy beautiful
dark spinach green cabochons in untreated product very cheaply. Some of the
ornaments & carvings are of extremely high quality and are not that cheap.
Quality of Jade
Translucence with 1 being the best, 1 to 10.
Please do remember to take into account the thickness of the item ie, it's a lot easier for a piece that is 1/8th" thick than something that is 3/8th" thick like a bangle for instance. Just about nothing I sell achieves (2) let alone (1) anything that rates a 1 will cost more than $5,000.00 USD, even from me.
Mr Jade Jewelry ©
Please email me if you have any questions.
mrjade@inbox.com
OR
jadejewelry@yahoo.com