"...In Antwerp, Van Royen (a senior scientist at the Diamond High Council, the official representative of the diamond industry in Belgium) tells me of another threat. There's a rumor of a new, experimental method for growing gem-quality diamonds. Apollo Diamond, a shadowy company in Boston, is rumored to be sitting on a single-crystal breakthrough. If true, it represents a new challenge to the industry, since CVD diamonds could conceivably be grown in large bricks that, when cut and polished, would be indistinguishable from natural diamonds. "But nobody has seen them in Antwerp," Van Royen says. "So we don't even know if they are for real."
I take a transparent 35-millimeter film canister from my pocket and put it on the table. Two small diamonds are cushioned on cotton balls inside. "Believe me," I say, "they're for real."
Van Royen tentatively picks one up with a pair of elongated tweezers and takes it to a microscope. "Unbelievable," he says slowly as he peers through the lens. "May I study it?" I agree to let him keep the gems overnight. When we meet the next morning in the lobby of the High Council, Van Royen looks tired. He admits to staying up almost all night scrutinizing the stones. "I think I can identify it," he says hopefully. "It's too perfect to be natural. Things in nature, they have flaws. The growth structure of this diamond is flawless."
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The diamond industry is in fact even more concerned about gems made using chemical vapor deposition than it is about Gemesis stones, though Gemesis poses a more immediate threat. The promise of CVD is that it produces extremely pure crystal. Gemesis diamonds grow in a metal solvent, and tiny particles of those metals get caught in the diamond lattice as it grows. CVD diamond precipitates as nearly 100 percent pure diamond and therefore may not be discernible from naturals, no matter how advanced the detection equipment. ..."