From PEOPLE Magazine Click to enlarge
GIFT FROM GRANNY

The Girls of Great Britain and Ireland tiara was a wedding present from Queen Mary to granddaughter Elizabeth.

GOOD TO BE QUEEN

The 22.48-carat whopper on the Coronation Necklace (right, with earrings, and, above left, on Elizabeth at her investiture) is the famed Lahore Diamond.

TURKISH DELIGHT

The "Fringe Brooch," made from a stone the Turkish sultan gave Queen Victoria in 1856, was recently worn by Elizabeth (inset, right) to meet the Turkish president.

FLOWER POWER

"Her love of diamonds reveals her very feminine side," Robert Lacey, author of The Queen: A Life in Brief, says of Elizabeth (inset, wearing the Williamson Brooch).

DIAMONDS ON DISPLAY

An exhibit featuring the Queen's gems opens at Buckingham Palace June 30. royalcollection.org.uk