CLEAN : Sky Blue Diamond goes on sale in Geneva

The video discusses the significance and rarity of blue diamonds, highlighting the famous Blue Moon of Josephine and other notable stones. It explains that these gems are primarily sourced from the Cullinan mine in South Africa, emphasizing their rarity. The video also shares a historical anecdote about Catherine the Great, illustrating the historical value and intrigue surrounding such jewels.

Describe the characteristics of the blue diamonds mentioned in the text.

• Vivid blue color

• High carat weight

• Rare production

• All of the above

What was the historical significance of the letter written by Peter the Great?

• It led to a treaty of peace

• It started a war

• It was lost in history

• It was never sent