Jewelry is not just a form of decoration; it is a symbol of wealth, status, and prestige. While there are countless jewelry brands in the world, only a few have been able to capture the attention of the ultra-rich. Here are the world's top three most expensive jewelry brands:

1. Graff Diamonds

Graff Diamonds is a British jewelry company that was founded in 1960 by Laurence Graff. The company specializes in creating exquisite diamond jewelry that is often purchased by the world's wealthiest people. The brand is known for its exceptional quality, unique designs, and rare diamonds. Some of the most famous pieces of jewelry from Graff Diamonds include the Lesotho Promise, a 603-carat diamond, and the Graff Pink, a 24.78-carat pink diamond. Graff Diamonds has a reputation for being one of the most exclusive jewelry brands in the world, and its pieces often fetch millions of dollars at auctions.

2. Harry Winston

Harry Winston is an American luxury jewelry brand that was founded in 1932 by Harry Winston himself. The brand is famous for its breathtakingly beautiful diamond jewelry, which has been worn by some of the most famous people in the world, including Marilyn Monroe and Elizabeth Taylor. The brand is known for its impeccable craftsmanship, attention to detail, and its use of the rarest and most valuable diamonds in the world. Some of the most famous pieces of jewelry from Harry Winston include the Hope Diamond, a 45.52-carat blue diamond, and the Lesotho Promise, a 603-carat diamond.

3. Cartier

Cartier is a French luxury jewelry brand that was founded in 1847 by Louis-François Cartier. The brand is known for its timeless and elegant designs that have been worn by royalty, celebrities, and socialites. Cartier is famous for its use of high-quality gemstones and precious metals, and its pieces often feature intricate detailing and unique design elements. Some of the most famous pieces of jewelry from Cartier include the Panther Bracelet, a stunning diamond and onyx bracelet that was first created in 1948, and the Love Bracelet, a classic design that has been worn by countless celebrities over the years.

In conclusion, these three jewelry brands are some of the most expensive in the world for a reason. They are known for their exceptional quality, unique designs, and use of rare and valuable diamonds and gemstones. While most people may never be able to afford their pieces, they remain a symbol of luxury and status for those who can.