How to identify true and false jewelry?

1. certificate: A real certificate must have several elements. The front of the certificate contains the jewelry photo, name, color, clarity, weight, refractive index, etc. Name, contact number, website, etc. are printed on the back. Identification agencies, generally with a steel seal.

2. Scientific treasure-finding method: jewelry flashlight (simple and rude but effective)

(1) The fluorescence reaction was observed with 365 violet light. Amber, beeswax, coral, ivory and so on. It belongs to organic gemstones, and those with fluorescence are true, while those without fluorescence reaction are false (there will be differences at different depths of origin). This sentence is purely handling. I haven't bought amber beeswax, so I can't verify it. Emerald, jadeite, agate, turquoise, etc. It belongs to inorganic gemstones, and it is true if it does not change color, and false if it changes color. Glue injection and wax sealing can also cause fluorescence reaction of jewelry, including Wan Wen pseudopatina, Venus effect, crack repair and so on. Ps: However, due to some problems in the production process of jewelry, such as easy cracking, the original stone will be injected with glue when making beads, otherwise the probability of cracking will exceed 10, which is a normal phenomenon.

(2) White light penetration with flashlight: It is normal for jade with old mineral materials to have black spots. The number and size of black spots and the value of jade also increase geometrically with different penetration.

(3) yellow light to see the surface, cracks, moisture.

3. Look, smell and ask questions.

(1) Let's talk about jade first. Common jade, spinach green, broken blue, old materials and so on. We should judge the value from color, transparency, size and moisture, because the price difference between different platforms and different entities is very large, so jadeite is valuable and has no market. In the future, I will continue to publish articles to introduce the main producing areas of different kinds of jewelry entities all over the country. Tell me about the experience of personal live broadcast. Emerald is the most expensive, especially the cargo head. I only take the cargo head as an example here. The green color of spinach is the popular traditional jade color. I bought a string of 14mm single-ring hand beads without impurities, 5k, a string of fine products, 1.3k with blue 16mm, which is basically not old.

(2) Crystal, this identification is relatively simple. Temperature: In handshake, the crystal cools slowly and the glass cools quickly. Transparency: Good transparency and good quality. The crystal is glued to one side with your fingers, and no fingerprints can be seen on the opposite side. If you look at the glass clearly, green ghosts are the most expensive.