Serena Williams finally revealed her engagement ring in a Reddit post and it's massive

Left: Jacopo Raule/Getty Images. Right: Noam Galai/Getty Images.

Serena Williams and Alexis Ohanian.

The INSIDER Summary:

Tennis star Serena Williams and Reddit co-founder Alexis Ohanian are engaged.
 Williams revealed her engagement ring in a post on Reddit.

A week ago, Serena Williams announced her engagement to Reddit co-founder Alexis Ohanian in a post on - where else? - Reddit. And it looks like she's going to continue using the platform.

In a post in the r/sneakers subreddit titled "Engagement shoe game," Williams showed off her new Nikes in a photo with Ohanian. It also prominently displayed the engagement ring on her finger. (The ring was also spotted this week in paparazzi shots.)

serenawilliams/Reddit

It's a bit blurry, but here's a slightly closer look.

serenawilliams/Reddit

Though it's super blurry and hard to see, it appears to be a gigantic, emerald-cut diamond flanked by diamonds on the band. And judging by the ring's size in comparison with her finger, it is probably over 10 carats and could rival Kim Kardashian West's 20-carat diamond ring.

Williams and Ohanian have been dating for about a year, but have been keeping their relationship relatively low-key and largely off of social media. 

Ohanian is a major player in Silicon Valley, founding several startups and having been a partner at the prestigious firm Y Combinator. The couple have been in a relationship since late 2015, following her relationship with Drake.