Photo: Courtesy Neil Lane Couture; ABC/Getty

See the Engagement Ring Zach Shallcross Proposed to Kaity Biggar with on Bachelor Finale

Zach Shallcross' engagement ring to fiancéeKaitlyn “Kaity” Biggarshines just as bright as his love for his future wife.

TheBachelorstar left his single life behindafter proposing to the ER nurseand “love of his life” with a stunning Neil Lane ring symbolic of their romance — and boasting tons of eye-popping bling!

“It’s heavy, huh?” Shallcross teases Biggar, who confirms the ring is so heavy with diamonds “you need a sling for sure.”

The franchise’s go-to jeweler Neil Lane says the piece embodies the way Biggar is “the light of Zach’s life.”

“When it came time to choose the ring it was the oval with all its brilliance and sparkle that Zach felt best represented Kaity,” Lane tells PEOPLE. “It was a thrill to see her reaction. I wish them a lifetime of joy and happiness.”

Courtesy Neil Lane Couture

See the Engagement Ring Zach Shallcross Proposed to Kaity Biggar with on Bachelor Finale

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While Shallcross, 26, was faced with a crossroads in the season 27 finale ofTheBachelor(having to make thelife-changing decision to propose to either Biggar or her competition Gabriella “Gabi” Elnicki), picking a ring for his final choice was a straightforward decision from the get-go.

“There’s something about that ring that just caught my attention. I just, without a doubt, could picture Kaity wearing that ring and it looking beautiful on her,” he explains of the “damn good” ring he couldn’t walk away from.

But, he adds, the jewelry is more than just the flashy keepsake. “It’s not about the ring really,” he notes. “It’s about committing to each other for the rest of our lives.”

See the Engagement Ring Zach Shallcross Proposed to Kaity Biggar with on Bachelor Finale

Shallcross and Biggar’s journey to engagement culminated in the finale episode of the ABC series, during which he was faced with a decision to start his new chapter of life with one of the finalists.

“It’s the biggest day of my life,” he says in PEOPLE’s exclusive sneak peek at Monday night’s episode. “My heart has been yanked in two directions.”

In the clip, he also opens up about his decision not to have sex as “the biggest mistake I could’ve done,” although he had the best intentions. “This is the only thing that feels right and comfortable for me,” Shallcross told hostJesse Palmer. “And [sex] can really muddy the situation.”

Ultimately, Shallcross thought that being intimate with the women was “not how I imagine a healthy engagement should start.”

source: people.com