- #1
Thread Owner
the ability to perfectly counterfeit everything is coming.
For many decades, the best diamond facsimile was cubic zirconia. It is similar to a diamond in brilliance and clarity but it isn’t as hard as a diamond and could never fool an experienced jeweler. Recently, though, new processes have made it possible to culture diamonds that are visually identical to mined ones.
One such process, chemical vapor deposition, produces diamonds with a heated mixture of hydrogen and methane in a chamber at very low pressures. Writing for Smithsonian Magazine shortly after the technique was developed, Ulrich Boser described having taken a sample stone to a respected diamond merchant in downtown Boston, who inspected it carefully under a jeweler’s loupe. After pronouncing it a “nice stone” with “excellent color” and no visible imperfections, the jeweler asked where it came from. When Mr. Boser said it had been cultured in a lab 20 miles away, the astonished merchant inspected it again. “There’s no way to tell that it’s lab created,” he said.
http://www.nytimes.com/2014/04/20/b...e-dirt-cheap-will-they-still-dazzle.html?_r=1
For many decades, the best diamond facsimile was cubic zirconia. It is similar to a diamond in brilliance and clarity but it isn’t as hard as a diamond and could never fool an experienced jeweler. Recently, though, new processes have made it possible to culture diamonds that are visually identical to mined ones.
One such process, chemical vapor deposition, produces diamonds with a heated mixture of hydrogen and methane in a chamber at very low pressures. Writing for Smithsonian Magazine shortly after the technique was developed, Ulrich Boser described having taken a sample stone to a respected diamond merchant in downtown Boston, who inspected it carefully under a jeweler’s loupe. After pronouncing it a “nice stone” with “excellent color” and no visible imperfections, the jeweler asked where it came from. When Mr. Boser said it had been cultured in a lab 20 miles away, the astonished merchant inspected it again. “There’s no way to tell that it’s lab created,” he said.
http://www.nytimes.com/2014/04/20/b...e-dirt-cheap-will-they-still-dazzle.html?_r=1