CLEAN : Rare flawless diamond fetches US$15.7m in Hong Kong auction

The video discusses the unique characteristics of a rare diamond, highlighting its exceptional quality, size, and rarity. It explains that the diamond was formed four to five times deeper in the Earth than average diamonds, making it potentially as old as the Earth itself. The video also emphasizes the diamond's top color, cutting, and clarity, making it one of the best ever offered at auction. Such diamonds are rare and unlikely to be seen again for decades.

How many times deeper are some diamonds formed compared to average diamonds?

• Two times deeper

• Three times deeper

• Four to five times deeper

• Six times deeper

What makes the diamond discussed in the video one of the best ever offered at auction?

• Its historical significance

• Its top color, cutting, and clarity

• Its association with a famous person

• Its unique shape

What is the carat weight of the diamond mentioned in the video?

• 100 carats

• 75 carats

• 50 carats

• Over 100 carats

How often can we expect to see a diamond of this quality and size?

• Every year

• Every one or two decades

• Every decade

• Every five years

According to the video, how old could some diamonds be?

• As old as the oldest known star

• As old as the oldest human civilization

• As old as the Earth itself

• As old as the oldest tree