Buyer's guide
Ruby
Ruby can command the highest prices of any colored gemstone. Fine rubies keep breaking auction records.
What to look for
Color
Pure, vivid red to slightly purplish red. Neither too dark nor too light.
Clarity
Expect some inclusions. Value depends on how visible they are.
Cut
Good cutting shows even color plus a bright, lively face.
Carat
Fine rubies above a carat are rare. Price climbs steeply with size.
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