Turquoise texture
The turquoise texture is commonly known as iron wire, with mottled colors, dark spots and textures. The better quality turquoise is denser and more conducive to polishing; poor quality porous, easy to lose water and fade after sun exposure. Turquoise blue is oxidized by copper and green is caused by iron.
Modified turquoise
Wax injection, wax can make up the surface of the hole and deepen the color. Some also use liquid dyes to mimic the arachnoid texture of natural turquoise surfaces.
Injection molding, turquoise injection molding is a very common treatment method, also known as turquoise stabilization treatment. Injection molding sometimes adds coloring agent to compensate for holes and reduce surface light scattering, so that turquoise displays medium blue tone. Improve durability. The stabilized turquoise has a good color and a low relative density, and the hot needle test causes the plastic to precipitate.
Synthetic turquoise
Synthetic turquoise, a little natural turquoise ingredients are gone, and there is no natural spirituality of the stone itself. Synthetic turquoise usually has the following types: Gilson's synthetic turquoise uses a ceramic process. Blue particles distributed on a shallower substrate can be seen when viewed at magnification.
Dyed hydroxyaluminite is a cheap turquoise imitation, and the simple identification method is pink under the Charles filter. Glass can also be used to mimic turquoise, but the refractive index values ​​of the two are significantly different. Swirls and bubbles can also be seen in the glass.
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