Higher price for small rough diamonds

De Beers has hiked the prices of small rough diamonds for the secont time in a row due to lack of supply and demand for small rough diamonds.  Prices of small rough diamonds rose by an average of around 7 to 10 percent in the trading session.  Price changes were mainly for the minus – 7 sieve size, which weighs about 0.03 carts. However, De Beers declined to comment on the increased prices.