The world's largest diamond producing country is...
Rusia
Peru
England
South Africa
spelling of Russia is wrong...
BUT most importantly...
I suppose it depends on how you list the countries.
By Volume?
By Carats?
By Income?
Ok...well...choose one, and the "Correct Answer" is still...NOT correct.
Sources:
http://geology.com/articles/gem-diamond-map
http://www.jewelrybloguncovered.com/top-10-jewelry/top-10-diamond-producing- countries
http://www.cheap-diamond.com/Countries
http://www.enviroliteracy.org/article.php/1121.html
http://www.encyclopedia.com/doc/1P3-1278518721.html
But hey....don't take my word for it.
Look at the most RECENT news topic concerning the world’s largest diamond producer:
http://www.thaindian.com/newsportal/business/worlds-largest-diamond-producer- seeks-training-in-india_100316226.html
Clearly this question needs to be removed from the quiz database.
edit:
Unless the person who devised this question, was asking about the origins of The Golden Jubilee.
In that case, the question needs to be completely re-worded.