1. Laofengxiang Laofengxiang Jewelry Store is the only century-old store in China. Lao Fengxiang's gold jewelry is classic in style and high in quality, and is deeply loved by the public. In particular, its gold wedding jewelry is very popular with newcomers. 2. Chow Tai Fook Chow Tai Fook was founded in Hong Kong on 1929 and is the most famous Hong Kong jewelry brand in Chinese mainland. Created 999.9 pure gold jewelry and became a model of gold jewelry industry. From 65438 to the early 1990s, Chow Tai Fook decided to use the "current price" with reasonable cost and profit, which became another generation of the term "authentic". 3. The old temple gold originated in Shanghai. It not only has profound connotation, but also has its own unique cultural connotation. In terms of craftsmanship, the gold jewelry of the old temple is beautifully shaped and has created many classic styles of gold jewelry. In terms of price, it is very real. It can be said that it is a good and cheap gold ornament. 4. Zhou Shengsheng Zhou Shengsheng, born in Guangzhou, 1934. Like Chow Tai Fook, it is also a famous jewelry brand in China. Zhou Shengsheng's gold jewelry is not only novel in shape, but also excellent in workmanship, which has been warmly sought after by many young people. Gold is the elemental form of chemical element gold. It is a soft, golden yellow and corrosion-resistant precious metal. Gold is a rarer, more precious and more valuable metal. Gold is generally expressed in ounces internationally. In ancient China, Liang was used as the unit of gold. This is a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communication, aerospace industry and other departments. The chemical symbol of gold is Au, and the financial English code is XAU or gold. The name Au comes from the story of Aurora, the goddess of dawn in Roman mythology, which means shining dawn. As of 202 1, 10, 12, the gold price is 1760 USD/oz. Physical characteristics 1. Color: the steam released when gold melts is yellow-green; In the process of smelting, its gold powder is usually brown; If it is cast into thin slices, it will emit green light. 2. Extensibility: extremely powerful. An ounce of gold can be pulled out 50 miles long. Its ductility makes it easy to cast. It is a good choice for jewelry. Gold is the strongest of all metals. 3. Extensibility: ranked first. It will cause extremely thin gold sheets to roll up easily. An ounce of gold can be hammered to a thickness of 4 million feet, 100 square foot. The ancients hammered it into thin slices and spread it in temples and palaces for decoration. All these can show the elasticity and ductility of gold. Chemical gold (transition metal), gold code is XAU _ USD, and XAU is chemical element code; Crystal structure: face-centered cubic structure Atomic weight: 196.96654 Shell structure: 2,8, 18,32, 1 8,1Electronic layout: [XE] 4f145438+00. +3 melting point: 1064.43℃ boiling point: 2808℃ electronegativity: 2.54 * * valence radius: 1.34a ion radius: 0.85(+3)a atom radius: 1.79a atom volume:1.