How to identify Lao Fengxiang Golden Ringzi

1. Fan Lao Fengxiang's authentic products are accompanied by "Lao Fengxiang" proprietary mark. It can be seen from the technical printing technology;

2. Each product of Lao Fengxiang is equipped with the only authoritative product specified in the product Related certificate. The authenticity of the certificate can use its number refer to the official website of the Login Jewelery Certificate inquiry.

4, Lao Fengxiang Customer Service Center, No. 432, Nanjing East Road, Shanghai: (021) 63220033

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three tricks to identify diamonds to identify diamonds Method:

This touch by hand. Touch the diamond surface with your fingers slightly, which will have a sticky feeling. This sticky is unique to real diamonds, and fake diamonds will not produce. Because the diamond has a kind of heel for fat, and the skin of the human finger will secrete some trace hand oil. This skin oil will be sticky with the crystal of the diamond.

2. Pencil with a pencil. This method was discovered by an expert from the former Soviet Union that before the appraisal, the diamond should be wet with water, and then gently scratched the crystal surface of the real diamond with a pencil. But if it is a fake drill made of glass, crystal, etc., traces will be left.

3. It can be observed by 10 times large mirror. Under 10 times the large mirror, most of the real diamonds can be seen in flaws, with triangular growth patterns. The surface of the diamond has "red, orange, blue" and other colors. Fire "light. shining.
4. The same 1 carat diamond can be divided into excellent, good, good, better, general levels, etc., color, cutting, and clarity are different. Essence Please pay attention when buying!

three methods of identifying platinum jewelry:

The body color identification method is larger than gold, and it is easy to make platinum and gold and gold and gold and gold and gold. Other metal differences. The surface of high -colored platinum jewelry is blue and white, and the luster is soft.

2. Mercury identification method: Apply mercury on the jewelry, and the mercury cannot be attached to the real platinum.

3. By borrowing fire to distinguish the real method: Burn the jewelry red with alcohol lamps. After cooling, the color of the color is about 70 %. Platinum components are above 95 %, and fake products that turn black.
The components of platinum are marked by Platinum and abbreviated as PT or PLAT, PM. The jewelry industry mainly uses PT to represent platinum. Platinum jewelry on the market is more common in PT900 and PT9500, that is, the platinum content is 90 % and 95 %. General manufacturers will make clear marks on jewelry.

three tricks to identify gold jewelry:

(1) See hardness: pure gold soft, low hardness, use nails can draw light marks, teeth, teeth, teeth, teeth, tooth The bite can leave the dental mark. The high -quality gold jewelry is lower than the soft color. The more copper, the harder, the more the bending method can test the hardness. The pure gold is soft, it is easy to bend, the lower the purity, and the less likely to bend.

(2) Listening to the sound: Real gold with a color of more than 99 % throwing it on the hard ground, it will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of "Dangdang" is emitted, and there are surplus sounds.

(3) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with fire (do not melt the jewelry), and observe the color change after cooling. If the surface is still the original golden color is pure gold; Dark or different degrees of darkness is not pure gold. Generally, the lower the color, the stronger the color, and the darkened color, which means that it is fake gold jewelry