The Diamonds Suck website is the perfect antitode to the news that the Diamond industry has successfully halted the plunge in the fundamentally worthless stones' retail price.
I saw that as well, but I think cut hardness must be jewelers terminology. As far as actual hardness diamonds are a 10 on the mohs scale, moissanite is a 9.25, and tungsten carbide is usually around 9-9.5.
Interestingly, moissanite (per the source referenced by the article) exceed diamonds in hardness (“toughness”) as well.
I saw that as well, but I think cut hardness must be jewelers terminology. As far as actual hardness diamonds are a 10 on the mohs scale, moissanite is a 9.25, and tungsten carbide is usually around 9-9.5.