Given the statement 'Diamonds are graded from D to X, with only D, E, and F considered good, D being colorless or  river white,  J  slightly tinted,  Q  light yellow,  and S to X  yellow.  ', is 'The most expensive diamonds on the planet are graded with D.' neither a logical follow-up nor a contradiction?
Diamonds are graded from D to X, with only D, E, and F considered good, D being colorless or  river white,  J  slightly tinted,  Q  light yellow,  and S to X  yellow.  ###The most expensive diamonds on the planet are graded with D.