Pearls are very common in the market as women's "good friends". Apart from natural pearls and artificial breeding, do you really know the identification methods of these pearls?
Simple true and false pearl identification method:
The first commonality of the simulated fake pearls is that because they are made of molds, the shapes are all round and the pearl holes are generally very large. The shape of the natural pearl is generally not round and round, and the bead hole is generally about 1.0 mm. The nacre layer can be seen from the bead hole.
The color of the simulated fake pearl is very uniform and uniform, or the color is heavy. Because it is sprayed paint, or painted and dyed. And true pearls will have a small amount of color difference for each grain, because real pearls will have different colorful matching colors under the light.
Many fake fake pearls have a smooth surface, no flaws, no texture, very light weight, real pearl texture is dignified, and there will be a cold feeling when touched.
When the simulated fake pearl surface is rubbed or scraped with a knife, the skin may be worn or peeled off. The natural pearl can scrape the pearl powder with a knife. After scraping off the pearl powder, the surface of the pearl is rubbed by hand. The skin of the real pearl is the same as before the scraping.
However, if it is a very expensive sea pearl, it is not recommended to use a knife to scrape the pearl. You can try several methods to identify the true and false pearls.
Look at the hole:
The perforated hole in the pearl has a layered structure; the surface of the bead is creased, and the glass or plastic core can be seen by careful inspection.
Dental test method:
The pearl slips gently from the teeth and has a sandy feel; the imitation beads have no sand and are smooth.
Friction method:
Rubbing two pearls with each other, it is true that there is a rough, sandy feeling; the one that slips on each other is fake.
Needle Punched Non Woven Fabric
What is needle punched non-woven?
Needle Punched Non Woven Fabrics are one type of dry-laid non-woven fabrics. Needle Punched Non Woven Fabrics are short fibers that are opened, combed, and laid into a fiber web, and then the fiber web is reinforced into a cloth by a felting needle. The needle felting machine has barbs, which repeatedly puncture the fiber web, and the hook belt fibers are reinforced to form needle-punched non-woven fabrics. Non Woven Fabric is not divided into warp and weft, and the fibers of the fabric are disordered, and the performance of warp and weft is not very different. Typical products of Needle Punched Non Woven Fabrics: Non Woven Felt, non woven synthetic leather base fabric, needle-punched Geotextile Fabric, etc.
Needle Punched Non Woven,Price Of Non Woven Fabric,Needle Punched Nonwoven Felt,Needle Punched Nonwoven,Needle Punched Nonwoven Geotextile
Huamaotek Nonwoven Co., Ltd , https://www.hmnonwoven.com