Pure Grown Diamonds says it has created the largest laboratory-grown diamond which it grew in late November and is certified by the International Gemological Institute.
It is a near colorless 3.04 carat, round stone, I color, SI1 clarity, very good cut stone that is up for sale for $23,012 on Pure Grown Diamonds' website.
"Mined diamonds of near identical characteristics sell from between $38,000 and $46,000 on some of the best-known jewelry websites in America," the firm said.
"Pure Grown Diamonds quality one carat stones are priced from $1,000 to $4,000. A one carat mined diamond starts at $5,000.
Most Pure Grown Diamonds are E-H color and VVS1-VS2 clarity certified. The highest colorless rating is D. The highest clarity rating is VVS1.
Pure Grown Diamonds says its laboratory-cultivated brilliant white diamonds are indistinguishable from mined diamonds, even under a microscope, yet cost 30 to 40 percent less.
"During the past 70 years, many have tried to grow scintillating, sizeable, colorless diamonds but have failed,” said Pure Grown Diamonds Chief Technical Officer, Dr. Devi Shanker Misra.
“No one, no company has achieved what Pure Grown Diamonds has accomplished – culturing thousands of alluring diamonds that rival mined-diamonds, in every aspect."
Pure Grown Diamonds have the exact same chemical composition, physical properties and optical features as earth-mined diamonds, according to the International Gemological Institute.
Pure Grown Diamonds mature within six to 10 weeks.