Sean Lowe proposed to Catherine Giudici duringThe Bachelor season finale with a stunning engagement ring on Monday's episode.

Rowe, 29, a Texas insurance agent, proposed to Giudici, a Seattle resident, with a gorgeous Neil Lane sparkler in Thailand. Lane, who is a Hollywood jeweler-to-the stars, helped the reality star pick out a cushion-cut diamond in a cushion-shaped halo with a pave' diamond-encrusted split-shank setting, according to a report.

Giudici posted a close-up picture of her Neil Lane engagement ring on Instagram with the caption "Rock. Part Three."

Lane has also designed Christina Applegate's wedding ring and Miley Cyrus' antique-style engagement ring given to her by Hunger Games hottie Liam Hemsworth.

Josh Holland from Blue Nile said that the cushion-shaped halo with a round diamond is one of the biggest trends in engagement rings this year.

"A twist on the halo engagement ring trend! Lots of women are seeking an increasingly popular cushion-shaped ring, but set with a round-cut center diamond for maximum brilliance," Holland told Glamour.com. "This style provides the best of both worlds: An on-trend overall look with a classic-shaped stone."

Neil Lane has helped select the halo style engagement rings for the previous four Bachelor stars, according to a report.

The couple appeared on LIVE! With Kelly and Michael and Good Morning America on Tuesday, March 12 to discuss their upcoming wedding plans. Lowe announced on GMA that he is the surprise contestant on the upcoming season of Dancing With the Stars. Another Bachelor star, Jake Pavelka, danced on Stars during season 10.

Watch Sean Lowe propose to Catherine Giudici on The Bachelor season 17 finale

Tags: The Bachelor 2013 Sean Lowe Catherine Giudici Dancing with the Stars