French Blue or French blue may refer to:
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French blue (color)
Bleu de France (Blue of France) is a colour traditionally used to represent France. Blue has been used in the heraldry of the French monarchy since at least the 12th century, with the golden ''fleurs-de-lis'' of the kings always set on a blue (h ...
, a shade of blue
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French Blue (airline), formerly French long-haul low-cost airline
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Tavernier Blue
The Tavernier Blue was the precursor diamond to the Blue Diamond of the French Crown (aka the French Blue). Subsequently, most scholars and historians believe that it was re-cut and, after a disappearance and reemergence into the public forum, w ...
, a diamond that was part of the French crown jewels
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Hope Diamond
The Hope Diamond is a diamond originally extracted in the 17th century from the Kollur Mine in Guntur, India. It is blue in color due to trace amounts of boron. Its exceptional size has revealed new information about the formation of diamonds. ...
, a diamond cut from the Tavernier
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