The first thing to look at is color: white, white, transparent and brown. Of course, there are rare purple, pink, purple and even rare blood. The surface is bright and bright, and the surface is pearly. The luster is made of white stone or crushed shell powder or white stone powder and glued together. It is white and flawless, white and dull, and the surface is polished and shiny, unnatural.
The second is to look at the texture:ç —ç£² is natural growth, carefully observe whether the texture is natural, that is, the texture of the two beads is not the same, there are some transparent materials on the surface as if there is no texture, in fact, there are, carefully You can see it. Its mineral structure is mainly aragonite, with a layered structure, the thickness of a single layer is 0.5-1.5mm, the layer is clear and dense; the false ç —ç£² has no natural growth pattern, and there is no obvious layered structure under the magnifying glass.
The third depends on the weight: the density is 2.70g/cm3, the hardness is generally 2.5-3 degrees, and some varieties can reach 4 degrees. You can try to pick up the weight of your hand. If it feels very heavy or too light, it may be unnatural.
Fourth, because of the long-term existence in the seawater and its own hardness, it is inevitable that there will be some insects and cracks on the carvings and parts. Of course, it is perfect, but the price is more expensive. If you encounter it very much, If the price is perfect and the price is very low, everyone should be careful.
Poly French Lace Mesh Embroidery Fabric
The Poly French Lace Mesh is specially,which always used for Spangle Embroidery Fabric.Multicolor Embroidery Fabric.And composition is always 100% polyester.
You can make garment dress.evening party dress and children dress which will be pretty.Most of these designs are designed by ourselves and you will see that it't very popular and pretty.
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