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Both Rosen and Strachan agree blanket statements shouldn’t be made about all lab grown diamonds, but note that they can be a more ethical option, too. “Lab grown diamonds have found a large market with consumers concerned about illegally-traded ‘conflict diamonds’ used to finance wars or ‘blood diamonds’ mined with forced labor,” says Rosen, who points to Russia’s continued invasion of Ukraine as a cause of these growing concerns. “Russian-owned diamond mining company Alrosa makes billions of dollars in revenue each year from its diamond mines, and that revenue is supporting a Russian economy buckling under global sanctions. While many large retailers like Tiffany’s have announced that they won’t buy diamonds cut from Alrosa diamond rough, the lack of transparency in the diamond supply chain and loopholes in sanctions specifically related to diamonds and gemstones means it is difficult to guarantee that a diamond wasn’t mined in Russia. Now, consumers know the only way they can avoid buying a conflict diamond is to purchase a lab grown diamond.”
“Lab grown diamonds are probably better for the environment, but they aren’t perfect,” notes Rosen. “On the one hand, there is no mining involved, so the negative environmental and biodiversity impacts from mining are avoided. On the other hand, it is extremely energy intensive to re-create the high-temperature, high-pressure environment needed to grow a diamond. Some lab-grown diamond producers claim to use renewable energy to grow their diamonds, so if a consumer is concerned about the environmental footprint of their diamond, they should buy from one of those producers.“
“These chemical reactions allow a diamond to grow in a matter of weeks rather than thousands of years,” continues Lisa Rosen, CEO of the International Gem Society, a leading resource for gem professionals. “CVD is a more popular process for producing gem quality diamonds, while HPHT is more common for producing diamonds for industrial uses.” “It is nearly impossible for the naked eye to tell the difference between a faceted lab grown diamond and natural diamond,” says Rosen. “The only way to tell the difference is with very powerful and expensive lab equipment, which most independent jewelers won’t have in their store.”
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