Diamonds

Choose the correct answer.

The world's largest diamond was mined in the Transram region in South Africa in 1905.	The largest diamond was named after its discoverer ....?....	Originally it weighed how many carats?
truthful	Cullunin	3106 carats
erroneous	Cullinan	3031 carats
certainly	Cullinun	3109 carats

The largest diamond presented to King Edward VII was cut into the famous...?...	Diamonds are the hardest known naturally occurring substance and are extremely resistant to..?	You can only cut a diamond with what?
'Star of Egypt'	acid or alkali	steel drill
'Star of the Nile'	rust or corrosion	angle grinder
'Star of Africa'	lime or lime dust	another diamond
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