Does it make any difference what carat diamond I have on my engagement ring?

What do you think of colored diamond engagement rings? Are colored diamonds inferior to clear diamonds?

Is it cheaper to buy a loose diamond and a ring and get it assembled than to buy a fixed diamond ring (assuming that both diamonds are of the same quality)?

How do I go about purchasing a loose diamond for a band I already have?

Can a diamond engagement ring be a monetary investment?

Should it matter to me if I purchase a diamond graded SI or VS?

To me near colorless diamonds seem perfectly clear, but which diamond color should I pick for a color sensitive lady?

I bought a ring for my girlfriend and plan to propose to her next week. Does diamond size matter in a diamond engagement ring?

0.9 carat, 1 carat and 1.1 carat - Is it true that buying diamond of unrounded weight is most economical?

Halogen lights - do they induce more brilliance in a diamond?