The most common optimization methods of turquoise are impregnation method, injection method and pouring method. Therefore, optimizing the identification of turquoise is mainly to judge whether turquoise contains colloid.

1. As a natural stone, natural raw ore turquoise does not stick to hands. Turquoise with glue feels sticky when held;

2, use fire to burn turquoise, if it changes color, smokes, and has a pungent smell, it must be optimized with glue;

3. Tie turquoise with sharp objects such as hot needles. If there is smoke and a pungent smell, it is optimized. This method is the same as the principle of burning turquoise;

As a natural stone, turquoise has cracks, so it will absorb water and change color after soaking in water. Colloidal turquoise generally does not change color or basically does not change color because the gap is blocked;

5, listen to the sound, two pieces of turquoise collide, the sound is crisp, and the glue is not so crisp.

Second, the identification of fake turquoise:

1. dyeing is the most common counterfeiting method for turquoise. Natural turquoise has stable chemical composition and is not easy to change color. Dyed fake turquoise is easy to change color, and the surface of stone can be wiped with ammonia water, and the faded fake turquoise is undoubtedly;

2. Most of the turquoise iron wires are concave; Turquoise bulges artificially added with iron wires;

3. There are vortex lines or bubbles on the surface of glass imitation turquoise;

4. Synthesis of turquoise by gilson method. This method adopts the process of making ceramics. When you zoom in, you will see blue particles distributed on a shallow substrate;

5, dyeing xonotlite, this kind of imitation turquoise, the simplest identification method is to display pink under the Charles filter.