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Ruby is one of the highest valued colored gemstones, in fact, large rubies can fetch higher prices than equivalently sized diamonds.The quality of a ruby is determined by its color, cut, and clarity, which, along with carat weight, affect its value. The brightest and most valuable shade of red called blood-red or pigeon blood, commands a large premium over other rubies of similar quality. After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions may indicate that the stone has been treated. Ruby is the traditional birthstone for July and is usually more pink than garnet, although some rhodolite garnets have a similar pinkish hue to most rubies.Ruby typically displays inclusions and these are tolerated as part of the nature of the stone. However, when inclusions minimize transparency or brilliance, they decrease the value. Ruby that is free from eye visible inclusions is available, however, large eye clean gemstones are rare and extremely valuable.