CLEAN : Preview ahead of Sotheby's jewellery auction in Geneva

The video discusses the significance and rarity of blue diamonds, highlighting famous examples like the Blue Moon of Josephine and their high value. It explains that these diamonds are primarily sourced from the Cullinan mine in South Africa, with only a small percentage being true blue diamonds. The video also shares a historical anecdote involving Catherine the Great, illustrating the historical importance and value of jewels.

What was the name of the famous 12-carat blue diamond mentioned in the video?

• Cullinan Diamond

• Blue Moon of Josephine

• Star of Africa

• Hope Diamond

Which mine is known for producing the rare blue diamonds discussed in the video?

• Kimberley Mine

• Argyle Mine

• Cullinan Mine

• Mir Mine

What percentage of blue diamonds graded by the CIA are considered 'living blue'?

• 5%

• 15%

• 1%

• 10%

Who was the historical figure that used jewels to secure a peace treaty?

• Catherine, wife of Peter the Great

• Catherine the Great

• Marie Antoinette

• Elizabeth I

What was the estimated value of the jewels used by Catherine in the historical anecdote?

• $1 to $2 million

• $3 to $5 million

• $10 to $12 million

• $6 to $8 million