|Princess Margaret's oval ruby and diamond ring (Photo: FABRICE COFFRINI/AFP/Getty Images)|
|Queen Maxima's ruby and diamond ring (Photo: Michel Porro/Getty Images)|
|Sarah, Duchess of York's ruby and diamond engagement ring (Photo: Mario Tama/Getty Images)|
|Left: Crown Princess Mary's original ring (Photo: Scott Barbour/Getty Images); Right, the current ring (Photo: Torsten Laursen/Getty Images)|
|Princess Marie's ruby, diamond, and sapphire engagement ring (Photo: Niels Henrik Dam/Getty Images)|
|Crown Princess Mary wears the Danish Ruby Parure (Photo: KELD NAVNTOFT/AFP/Getty Images)|
Which royal ruby rings are your favorites?