A team of physicists, materials scientists and engineers affiliated with several institutions in China, working with a ...
Natural diamonds form out of carbon that gets stuck in lava tubes about a mile deep in the Earth's crust. The final purification step converts the carbon into slippery sheets of graphite — the ...
South Africa’s State Diamond Trader (SDT) is seeking to emphasise the uniqueness and value of natural diamonds as ... supplying beneficiators with unpolished diamonds “The legislation has ...