What is the centennial celebration of Laofengxiang gold jewelry? Recently, Lao Fengxiang's activities were held together with the Spring Festival and Valentine's Day. After 45 days, gold bars, ornaments and other prizes were quite powerful. See a person RP. I believe that a big enterprise like Lao Fengxiang won't cheat on prizes, because my friend bought a small pendant of 1000 last year and drew a gold bar.
When will Hengshui Laofengxiang Gold hold activities and have a holiday? It depends.
The World Cup was hot, the situation in Iraq deteriorated, the United States sent 300 security consultants like Vietnam War version 2.0, the situation in the Asian border was tense, ulak ultimatum, Libya and Syria caused oil shortage, and the wording of the Federal Reserve's interest rate resolution was biased towards doves, which rose by 3.46% in the evening of June 19. Last week was like riding a roller coaster, rising at night and falling during the day. This week's trading price of 20 14 opened at 262 on June 30th. Jewelry gold is about 305 yuan, investment money is 273.5 yuan, and recovery is 252.9 yuan. The recovery price of pawn shops is only below 2 15 yuan, so it is necessary to be cautious when investing in risky businesses.
Despise advertisements and some administrators who help others.
Ask for a picture, prove it, and ask questions.
How to tell the authenticity of Lao Fengxiang's gold jewelry 1, as long as there is Lao Fengxiang's words and their invoices, it is ok, and the invoices are the real guarantee of after-sales service.
2. If you are not at ease, you can go to an appraisal agency for appraisal, or go to the store to ask the master to have a look. They can see it at a glance, but the most accurate test of purity is the instrument.
The current price of Laofengxiang gold jewelry is 3 10.
How to identify Lao Fengxiang's gold jewelry? Look at this color.
According to the different luster and color of gold, pure gold, k gold, real gold and fake gold can be roughly distinguished. That is, red and yellow are the best gold, and the purity is above 95%; The fineness of positive yellow is about 80%; Cyan accounts for about 70%; Yellow is light gray, and the fineness is about 50%. Therefore, there is a formula of "seven green, eight yellow, nine five red, yellow and white with gray and half gold". For jewelry that has been hidden for a long time, there is a saying that "copper turns green, silver turns black, and gold never changes color".
Look at the density
The density of gold is 19.32g/cm3, which is about twice as heavy as that of silver, lead and tin with the same volume. Available formula: the mass (gram) of a certain gold jewelry is equal to the density compared with the volume (cubic centimeter) of a certain gold jewelry. Calculate the density of the measured gold jewelry. If the density is about 19.32g/cm3, it is pure gold or relatively pure gold, otherwise it is impure gold or colored gold (this method is not destructive to jewelry).
Bending hardness
Gold has the characteristics of ductility and low hardness, and can be pressed into thin sheets with a thickness of 12.7 microns. When the color is high, you can scratch it with a pin or nail to leave traces. More than 97% of colored gold jewelry is folded two or three times, and wrinkles appear at the bend, also known as fish scales; Gold ornaments with a fineness of about 95% feel hard when bending, and the scales are not obvious; About 90% of gold ornaments are hard when bending, and there are no fish scales; Gold jewelry with many impurities will break after two or three bends; If it is made of gold, it will break when bent, and there are obvious sand grains on the cross section. When using this method, the width and thickness of jewelry should be considered. Thick and wide jewelry is harder, while thin and narrow jewelry is softer.
Phonological elasticity
When high-quality gold jewelry is knocked or thrown to the hard ground, it will make a dull and low sound of "poof-poof-poof", which has no rhythm and elasticity. K gold has rhyme, sound and elasticity. The greater the elasticity, the sharper the rhyme and the worse the quality.
touchstone
The color of gold jewelry is determined by grinding the gold card (the gold medal whose color has been determined) and the measured jewelry on the touchstone and comparing the colors. The method should be carried out under natural light and fluorescent lamps, not under direct sunlight and incandescent lamps.
Use acid point
On the touchstone, grind the gold channel of the identified jewelry and the correct brand respectively, and test nitric acid on the gold channel with a glass rod. Because the chemical property of gold element is stable and does not react with acid, its color remains unchanged. If it is not gold or impure gold, the path of gold disappears or changes. The law of change is "three fast and three slow", that is, the low color disappears quickly and the high color disappears slowly; Mixed gold disappears quickly, while clear gold disappears slowly; Large mixed gold disappears quickly, while small mixed gold disappears slowly. According to the disappearance of the golden path, the color of gold ornaments can be determined by comparing cards.
Is Lao Fengxiang's gold jewelry good? Lao Fengxiang, after all, is an old brand, better than the new gold shop now, but gold is still good, because there were too many fakes ten or twenty years ago!
Shanghai Laofengxiang's gold jewelry? It is the relationship between percentage and thousandth!
Does Lao Fengxiang's gold jewelry have a certificate? Hello, many brands will check gold in the future to ensure product quality. There is a test label, which is a certificate.
Lao Fengxiang, Lao Miao and Leofoo didn't take the exam.
China Gold, Mengjinyuan, Zhao Jin, Jinye, Chow Tai Fook, Zhou Dasheng, Luk Fook and other brands have all been tested, some of which are tested at the national level and some at the provincial and municipal levels.
Natural country testing is more expensive, but more authoritative.
It's hard to say which is better than the old temple gold jewelry, because they get goods from several companies, Chow Tai Fook has good color, and the company he gets goods from is more demanding and stricter.