Buying diamonds can be a scary proposition. To the untrained eye, color, cut, clarity and karats, the 4Cs of savvy diamond buying mean nothing more than another C word - confusion.

And with the cost of a good quality 1 karat diamond around $5,000, there are no little mistakes.

Follow these rules when buying diamonds:

1. Confirm the stone is certified by the Gemological Institute of America or the American Gem Society, describing the 4Cs.
2. Make sure you receive a receipt from the store listing all the representations made.
3. Get the stone appraised by an independent gemological expert.
4. Ask for and receive a 30-day guarantee that will let you return the stone for cash, not store credit.

A reputable jeweler should be happy to comply. If the jeweler balks, walk away and shop elsewhere.

When diamonds are involved, all mistakes are big ones!

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