The museum is located in the Shuvalov Palace on the Fontanka River. The players had a chance to take in the many rare and priceless pieces throughout the museum, as the guide drew their attention to some of the most famous creations of the collection.
Hingis came prepared with a few factoids of her own as the tour got underway.
"Though Peter Carl Faberge has a French surname, he is from Russia. I saw that on Wikipedia," she noted.
"It's something unbelievable, so crafty, with so many small details. And it was created some centuries ago, it's fantastic."
The crown jewel of the Museum's collection is the series of nine Imperial Easter Eggs created by Faberge, who was a jeweler for the families of the last two Russian emperors - Alexander III and Nicholas II. The eggs garnered more than a few 'Wows" from the three.
"Every time you see such beautiful things, you understand how skilful the craftsmen of the past were, how delicate and colorful their creations are," said Majoli.
"Faberge clearly had a rich imagination and obviously loved jewels," Halep added.
Check out the best photos of the event on wtatennis.com:
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All photos courtesy of St. Petersburg Ladies Trophy 2017.