The Big 3

What is the gemstone known as "King of Gems"?

• Ruby

• Emerald

• Sapphire

• Diamond

Below are the gemstone included in the big 3 EXCEPT...

• Sapphire

• Ruby

• Amethyst

• Emerald

Below are the reason why the big 3 stone is valuable EXCEPT...

• Durable

• Rare

• Size

• Beauty

Where is the mostly ruby was found?

• Africa

• Madagascar

• Burma

• Gambia

Where the emerald was discovered in the 16th century?

• South America

• Madagascar

• Burma

• Gambia

What is the hardness of the emerald stone?

• 7-7.5

• 7.5-8

• 8-8.5

• 8.5-9

Which of the following criteria belongs to Columbia emerald?

• The colour is darker

• The price is higher

• More transparent

• Much easier to cut

What is the treatment normally used for emerald?

• Oil treatment

• Heat treatment

• Brush treatment

• Burn treatment

Where was the sapphire mostly found?

• Sri Lanka

• Brazil

• China

• Mexico

What is the most valuable sapphire?

• Pigeon blood

• Rabbit blood

• Corn flower blue

• Ceylon blue