Why would you get a silicon carbide stone, when you can get a manufactured diamond? Also, are other natural stones, e.g. sapphire, ruby, overpriced as well? T

Why would you get a silicon carbide stone, when you can get a manufactured diamond? Also, are other natural stones, e.g. sapphire, ruby, overpriced as well? There's a spelling error in the article: lusterous -> lustrous.