Digging Through Queen Elizabeth's Jewelry Box

March 11, 2011— -- As Kate Middleton prepares for her wedding on April 29, presumably she is gathering "something old, something new, something borrowed and something blue" for good luck. Typically, the "something borrowed" comes from a married woman and can include jewelry. Good news, Kate, the royal family has jewelry boxes full of tiaras, broaches, necklaces and earrings in every color, shape and size imaginable.

Could Miss Middleton's "something borrowed" be Princess Diana's Cambridge emerald choker made of emeralds and diamonds that she received as a wedding gift from the queen? Diana wore this necklace in 1984 at a charity event in Australia

This Garrard & Co piece consists of 14 emeralds set in platinum and features a large oval emerald in the center surrounded by single layer of white diamonds. On each side of the large emerald sits three medium-size emeralds, also surrounded by white diamonds. Seven smaller emeralds lie in between the medium-size jewels with two diamonds on either side.

Another option for Kate is the King Khalid of Saudi Arabia necklace. This drop diamond necklace from Harry Winston was given to the queen in 1979 by King Khalid and loaned to Diana on numerous occasions. The fringe necklace is set with brilliant-shaped and baguette-shaped diamonds. The queen was spotted wearing the necklace at the 1982 London premiere of E.T.

Brides also need a "something blue." Historically, this represents faithfulness, purity and loyalty. Kate's sapphire engagement ring could serve this purpose if she chooses to wear it on her wedding day.

But one thing is almost certain -- the wedding bands should be made of Clogau gold. This tradition dates back to 1923, when the Queen Mother wore a Welsh Gold wedding ring from the Clogau St. David's mine. Ever since, royal wedding bands have included gold from this mine, but Kate and William are keeping quiet on whether they will carry on the tradition.

"As much as we would delight in this tradition continuing in Prince William and Kate Middleton's wedding jewelry, and also for many generations to come, the palace, understandably, is simply not in a position to confirm," Ben Roberts, managing director of Clogau Gold, wrote on its website.