Jeff Bezos and Lauren Sanchez marry in Venice, Italy

Jeff Bezos, the Amazon founder and owner of The Washington Post, is marrying Lauren Sanchez, a former journalist turned children's book author.

The ring is estimated to cost between $3 and $5 million Jeweler and expert Briony Raymond told PEOPLE that due to the sparkler's high color grade and clarity, it is estimated “to be anywhere from $3 million to upwards of $5 million depending on the exact specifications of the diamond."

Here are some figures about the couple and their "wedding of the century", as well as snaps of the celebrity arrivals and protests. The headline-grabbing Venice wedding of Amazon multi-billionaire Jeff Bezos to longtime partner Lauren Sánchez has been causing quite the storm.