Princess Charlotte is celebrating her 10th birthday today and will undoubtedly be spoilt rotten by her nearest and dearest. The only daughter of the Prince and Princess of Wales may have access to the world's best luxuries; however, she once received one lavish birthday gift that she was not allowed to keep.

Charlotte, born May 2, 2015, was given a stunning 18k white gold rattle lined with all kinds of gems for her actual birthday - one of the most luxurious presents for a newborn. The rattle in question was lined with sapphires, rubies and diamonds to produce the Union Jack flag.

Its price point was estimated at a whopping £35,426.

The gift was given to Charlotte when she was born by the Natural Sapphire Company as a way of thank you to Prince William and Princess Kate.

Following the couple's engagement in 2010, sales of Sapphire engagement rings skyrocketed with women trying to replicate the Princess of Wales's ring.

On its website, the company said at the time of Charlotte's birth: "When Kate and William were engaged with the iconic blue sapphire ring that once belonged to Princess Diana, our sapphire ring sales rocketed. Women everywhere wanted to be just as fashionable as Kate.

"Today, we continue to grow as a business and it is with great joy that we celebrate the birth of a new royal. We’re thanking Kate and William for introducing our company to the world, by gifting a custom-designed baby rattle, fit for their Princess.

"Baby gifts made from precious metals are a tradition dating back to the 18th century. Our luxury rattle, worth $45,000, is made from 18k white gold; lined with sapphires, rubies and diamonds to produce the Union Jack flag.

"Such a unique gift, unlike any they will receive from well-wishers around the world, will surely be treasured."

However, even though Kensington Palace never confirmed whether the lavish baby toy was received by William and Kate, a general rule, according to the Palace, is that gifts from commercial companies were not accepted, the Mail reported.