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		The Enigma black diamond fails to fetch price target at auctionImage Gallery (2 Images)
					
						 
 
	
							American tech-entrepreneur and founder of crypto companies Hex and PulseChain, Richard Heart, posted on social media that he purchased the diamond. Source: Getty Images
						
 
					
						 
 
	
							Richard Heart, founder of Hex and PulseChain
						
 
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