Turquoise is one of the "four famous jade" in China, which has attracted much attention in recent years. Because the color of turquoise is elegant and deep, and the iron wire is natural, the polished turquoise can be used as bead jewelry and inlaid into jewelry, so it is loved by people at home and abroad. However, with the increasing demand of turquoise market, various fake and shoddy products and optimized turquoise products have also appeared in the market. So today, let's learn together: how to distinguish between true and false turquoise and whether to optimize turquoise.
One? The identification and optimization of turquoise have to talk about the color of turquoise. There are hundreds of colors of turquoise, but the common ones are blue, light blue, turquoise, green, yellow-green and light color. Because it is naturally formed, the color distribution is not particularly uniform, and there are usually iron wires. Imperfect turquoise is rare and expensive. In order to cater to consumers' preferences, general merchants often optimize turquoise manually.
1, see if the color is too uniform, where there is color transition, and whether the transition is natural and uniform.
2. Generally, the optimized turquoise with clean surface will have many white spots on the surface, which is called "floating white flowers" in the industry.
3. We can see whether the color of the pore part of the bead is consistent with the color of the surface. The pore and surface color of raw turquoise will be different, and the optimized turquoise will be more consistent because of gluing.
4. You can wipe the turquoise with a cloth dipped in ammonia. If it fades, it's fake.
(The picture on the left shows the optimized turquoise, and the picture on the right shows the raw turquoise. )
Two? Look at the gloss appraisal. The high porcelain turquoise of the original ore will be like porcelain after polishing, while the optimized turquoise and counterfeit turquoise will be greatly discounted on porcelain. At present, the luster of optimized (micro-infiltrated) beads on the market is very close to the original ore. Several small methods to identify turquoise by luster;
1. The turquoise luster of natural high porcelain has the texture of porcelain, while the optimized turquoise luster is plastic.
(Gloss is not easy to describe and capture, and this picture can barely reflect a little difference in gloss. )
3. Identification by water measurement: After a part of turquoise is put into water and the other part is exposed to water (the exposed part can't touch water) for a period of time, observe the changes of the submerged and non-submerged parts to see if there is an obvious delamination line (waterline for short). By observing whether the waterline is obvious, we can see whether the pores of beads are blocked by glue (that is, soaking glue, filling glue and sealing wax), but the method of observing waterline cannot be universal.
In order to let everyone know what the waterline is more directly, we chose a big white ball, and the waterline is very obvious. The blue part below is the part submerged in water. This phenomenon shows that the pores of turquoise are smooth, but it also shows that the density is not good. It may take more than ten hours for the really hard porcelain pine to change color, so the results obtained by water measurement method can not be used universally and can only be used as a reference.
Four? Look at the identification of iron wire, is it really turquoise iron wire? Not necessarily, because some fake turquoise will be artificially added to the iron wire, so the artificially added iron wire will appear very dull in direction and distribution, and the thickness of the iron wire will also appear too consistent; Real turquoise lines are concave inward, while artificial products are convex outward.