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Better to be a strong man with a weak point, than to be a weak man without a strong point. A diamond with a flaw is more valuable that a brick without a flaw.

Rough diamonds may sometimes be mistaken for worthless pebbles.

I've never had a diamond before, and now I've got a diamond surrounded by other diamonds and diamonds in places where, frankly, you don't need diamonds at all, and I would have been happy with a piece of twine.

You can find a diamond in the rough a lot of times.

Diamonds are intrinsically worthless, except for the deep psychological need they fill.

I have to report to those of you who think diamonds make a difference that I cannot tell what it is. Seriously, as you all know, they make no difference at all. They just make the flute look a little more special.

Nature has made a pebble and a female. The lapidary makes the diamond, and the lover makes the woman.

Let us not be too particular; it is better to have old secondhand diamonds than none at all.

You can get a diamond which is worth 10 cents; you can get a diamond of exactly the same size, which is worth a hundred dollars.

On a submicro scale, pure diamond is billions of billions of carbon atoms bonded to one another. If you shrunk yourself down and stood inside the diamond, you'd see nothing but carbon in a perfect pattern in every direction.