Serena Williams, $2 Million
The tennis star became engaged to Reddit Co-Creator Alexis Ohanian in December 2016 and received a stunning 3-stone (14-carats all together) diamond ring with a platinum band. The ring is believed to have cost Ohanian roughly $2 million. Similar ring styles can be found offered for $1,750 – 5,000. The couple tied the knot in a lavish New Orleans ceremony hosted at the Contemporary Arts Center in November 2017.