Top 1: Cartier (Weibo) (1847)

Cartier was praised by King Edward VII of England as "the jeweler of the emperor and the emperor of jewelers". In the past 150 years, it has created many dazzling and wonderful works.

Top 2: Tiffany &; Co) (Weibo) (1837 new york, USA)

September 1837, 18, Charles Tiffany & John B. Young (Charles Tiffany &: John b. Young) borrowed $ 1000 as capital and opened a boutique of stationery and daily necessities called "Tiffany & Young", with a turnover of only $4.98 on the opening day; By the time Tiffany died in 1902, the property left behind was $35 million.

Top 3: Bulgari (Weibo) (Italy 1884)

Bulgari is the third largest jewelry brand in the world after Cartier in France and Tiffany in the United States. This brand originated in Greece, and its founder Thiriot Bulgari was a silversmith in Epirus, Greece.

Top four: Van Cleef & Arpels; Yabao (Weibo) (1906)

Since its birth, Van Cleef & Arpels has always been the top jewelry brand especially loved by nobles and celebrities all over the world. The beginning of jewelry implies beautiful love words.

Top five: Harry Winston (Weibo) (1890 New York, USA).

Known as the "King of Diamonds", Harry Winston is a world-renowned super jewelry brand with a history of 100 years. Exquisite craftsmanship and careful consideration in diamond cutting can always increase the value of diamonds several times.

Colored gold, also called colored gold. That is, gold (or K gold) is matched with purple, red, pink, orange, green, blue, brown and black. It is made by smelting 75% gold with copper, aluminum, silver, cobalt, palladium, iron, cadmium, nickel and other metals. The more exotic colors, such as black and blue, the more expensive.

Second, the color gold jewelry maintenance method:

1. Perfume, detergent, bleach, seawater, etc. It may lead to discoloration of the gold ornaments, so when cleaning and swimming, remove the gold ornaments to avoid chemical reactions and scratches.

2. If you lose luster due to stains and dust pollution, you can clean it with a soft brush and dry it with a soft cloth in mild soapy warm water.

3. Avoid putting colored gold jewelry together with other jewelry, especially diamonds, because their hardness will cause mutual friction and scratches, so they should be stored separately in cloth boxes.

4. If there is a black silver film on the surface of gold jewelry, you can use 2 grams of salt, 7 grams of baking soda, 8 grams of bleaching powder and 60 ml of water to prepare a "gold cleaner". Put the gold jewelry into a bowl, pour the detergent, take it out after 2 hours, rinse it with clear water (preferably not hard water), bury it in sawdust to dry, and then wipe it with a soft cloth.

Going to the factory for maintenance once every six months or so is the money for cleaning or recharging. Lottery manufacturers have after-sales service, and there is basically no charge.