Deshaun Watson‘s wife-to-be is walking around with a house on her finger — TMZ Sports is told Jilly Anais‘ engagement ring has a value of AT LEAST $2 million!!

We spoke with the jeweler who provided Watson with the stunning ring he used to propose to his longtime girlfriend over the weekend … and got all the details on the jaw-dropping accessory.

Vikar Ahmed told us the rock is called “The Glory Treasure” … and holds over 20 carats of the finest diamonds, including color D-E-F & clarity IF to VVS.

“At the heart of this exquisite piece lies a premium D center diamond, renowned for its perfect cut and exceptional color & flawless clarity,” Ahmed said.

The ring features 18k white gold … with Ahmed crafting this stunning symbol of love in Germany’s gemstone capital, Idar-Oberstein.

Ahmed said he and Watson worked together for seven months to create the perfect ring … and it’s worth up to $2.5 million.

That has a lot of zeros, but so does Watson’s 2022 contract. He signed a five-year, $230 million guaranteed deal with the Browns.

“This diamond engagement ring is not just a piece of jewelry; it is a declaration of commitment, a celebration of craftsmanship, and a mark of prestige,” Ahmed added.

“With its breathtaking design and the story behind its creation, it stands as a testament to the beauty of love and the artistry of high jewelry.”

Watson and Anais — a cookbook author and singer — have been together since 2019, when the then-Houston Texans QB hit her up in the DMs.