The article comes from net of official of jade carving a person of academic or artistic distinction
Agate compares common gem as a kind, depending on the grain of rich color and diversification, accept market favour quite all the time, nevertheless its make false appearance also is common occurance likewise. To prevent to buy false agate, a lot of people can take strong smooth electric torch when buying agate, with period the true and false that differentiates agate through making smooth way, so today we for say how the agate below lamplight divides true and false.
How does the agate below respecting lamplight divide true and false actually this problem, above all what we should make clear is the issue that how makes light. Because major agate is opaque, wanting minority only is small transparent to translucence, so dozen of light to agate, it is the reverse side that tastes from agate act the role ofing makes transmission light commonly, next ability so as to observes in-house a few probably grain.
Said how to make light, we say formally how to differentiate Na Gongma Nao with lamplight next, and whether does agate interior have grain to wait.
The dot gathers and for instance the red of natural Nagong agate is become by countless Zhu Sha actually, when shooting Na Gongma Nao with strong illumination accordingly, can observe the countless Zhu Sha that are together thick and fast are nodded, and colored agate interior is nodded without Zhu Sha, because this looks below lamplight,be less than Zhu Sha to nod. Additional, color of Na Gongma Nao is redder, mean vermilion dot to be jumped over thick and fast more much, diaphaneity is so poorer also, hit smooth time base to be not appeared originally, there perhaps is pervious to light appearance in brim part only. But the Na Gongma Nao that coloring is modelled on, can not appear the phenomenon that color Yue Gongyue does not appear.
Still have, because of agate mostly diaphaneity is poor, because when we are being bought, this must want carry dozen of lamp, ability is accurate differentiate its interior whether grain of invisible and traverse grain, curvature of the spinal column and beehive grain or grapefruit meat lines wait, will judge the actor of low quality of agate character with this. If agate is in-house,contain many invisible and traverse lines for instance, mean rupture easily.
