|Princess Margaret's Ruby and Diamond Ring (Photo: FABRICE COFFRINI/AFP/Getty Images)|
The auction's lot notes describe the ring as follows: "three oval rubies between baguette-cut diamond shoulders and brilliant-cut diamond edge detail." Each of the three rubies had been given to Margaret by her mother, Queen Elizabeth the Queen Mother. But the design of the ring was all Margaret herself; the notes explain that she "personally designed" the jewel.
Buyers were clearly impressed by Margaret's creation: the ring sold for more than $550,000. How would you rate Margaret's eye for jewelry design?