Which single company, based in Johannesburg, South Africa and London, England, controls a significant proportion of the trade in diamonds?
Which British company announced, in 1960, a computer which introduced the use of core memory and was based on decimal instead of binary?
Between them, who controls over half of the shares and voting rights of the world's largest cosmetics and beauty company, L'Oréal?
What word, originally applied to a large, flawless diamond, is now used to denote a model of excellence or perfection of any kind?
