Anyone know what the stones are that are being used on several sites from sellers stating they have huge carat weights of HPHT treated earth mined diamonds for sale? What is the actual material? It really looks like the poorest grade moissanite or a super bad CZ. I just don't know if they are coating bad quartz crystal. Anyone know what they are and where they are being supplied from. They always say they are from Brazil and heat treated to bring out clarity and color.
