Some thoughts on nephrite Jade knowledge for those interested in nephrite Jade:
Understanding nephrite is a lot more complex then it seems. The term 'Hetian' refers to a Jade from a specific location. It can vary from white, grey and into green, yellow, brown and sometimes a rust color (usually from rivers). Only a small percent is excellent quality, as with any gem. Many people refer to all nephrite as 'hetian' because it's the most famous name, when in fact, most comes from Korea and BC. It's a marketing strategy, like calling sparkling wine 'champagne' to make it more attractive.
In the best qualities, finely textured Hetian is most valuable, followed by siberian, and then BC, though there are high qualities from all of those locations. And, a high quality BC bangle will be more expensive then a mid/low range Siberian, and so on. It's really case by case judgement that's needed.
It's hard to tell where a nephrite comes from because BC produces a range of colors and textures, as does Siberia. Generally though, Korean nephrite is a light green with a very slight 'porridge texture which is telling.
In nephrite qualities, there is a big difference in how shiny it can become and this has to do with how tightly it crystalized by the absence of water. This is why the very hard types like those from BC and like the Edwards can carry such a high polish, when other types cannot. Even within a location like Siberia, only some will be ideally crystalized. ( though 'ideal' is subjective, since some prefer a softer shine to a hard shine. Certainly though, tougher is better because of wear.)
If there's enough water present during formation, it will turn to serpentine, which is related, but much softer.
Texture is a very important quality, with 'moisture' in the stone being held by enough body to anchor it. On eBay, we've seen white , ' hetian' bangles for $20 . They are Bowenite bangles that are too white and too translucent, so they dont embody a sense of either body or moisture.
Over thousands of years, river water can add that fine texture and moisture, although, this can very rarely also be found to varying degrees in mountain Jade.
As one can see, there are so many variations and subtleties in judging nephrites, and the most beautiful prices have many qualities working together.
The education that it takes to understand it makes it more of a specialty market in the West, which is why jadefinejewelry offers only some to their online western market, because it takes knowledge to understand it. I still have trouble understanding why some are 5k and others 100k, when they look similar in pics.