Literary circles have slightly different views on each category of "three noes". In jade, it often refers to flawless, crack-free, artificial glue injection dyeing; In terms of wood and bodhi, it often means no crack, no shade and no color difference.
Hetian jade
No cracks, no stains, no impurities
turquoise
No optimization, no blame, no dyeing.
South red
No cracks, no crystals, no black spots.
Water mirror
No cracks, impurities and stains.
Cui Fei
No cracks, no glue, no impurities.
Honey wax
No baking color, impurities and cracks.
lazurite/lapis lazuli
It's not white, it's not gold, it's not weird.
Mengmaya
No skin, no core, no smile (cracking)
the moon and stars
There is no partial moon, no shadow, no color difference.
Collect walnuts
No yellow tip, no pubic hair, no color difference.
(No bug eyes, no cracks, no edge trimmers, no oil stains, no coloring and no chromatic aberration. These are also the criteria for judging the quality of walnuts in Wan Wen. )
Shoushan stone
No cracks, no sand, no glue.
olive nut
No color difference, no rotten tendons, no pubic hair
(No white spots, cracks, leakage, etc.). These are also factors to judge the appearance of olive stone. )
Three high
The "three highs" in Wan Wen Circle are also the high-quality evaluation criteria summarized by Tibetan friends for some categories. These standards are usually from the aspects of texture and technology. Emerald often covers "high density, high purity and high polishing"; Wood often covers "high oil content, high density and high polishing".
turquoise
High porcelain, high blue and high density
Hetian jade
High whiteness, fineness and moisture.
Cui Fei
High water head, high cleanliness and high polishing degree
Lanpo
High blue, clear water, high throw
the moon and stars
High porcelain, high density and high polishing
Dalbergia microphylla
High density and high oil content
To evaluate a fine jade Wan Wen in detail, there are often many criteria to judge whether it is "three noes" or "three highs", such as craft, age, culture and so on, so as to accurately estimate its value.
And specific to a certain sub-variety, these standards are sometimes not necessarily absolutely practical, such as Huanghua pear, which has higher requirements for seeds.
But in the final analysis, the pursuit of better texture, color and craftsmanship is the king under the premise of maintaining interest and doing what you can.