The lord and lady of the rings!

Justin Timberlake and Jessica Biel were one of the most jaw-dropping couples on the red carpet at Monday's Met Gala at the Metropolitan Museum of Art in NYC. (Biel wore a plunging white Prada dress with cascading jade green stones; Timberlake looked handsome in a black Tom Ford tuxedo with a satin shawl lapel, evening shirt, satin bowtie, cufflinks and leather "Chelsea" boots.)

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Over the weekend, however, the recently engaged couple were their more typical low-key selves in the Big Apple at jewelry boutique Eli Halili in Soho -- where Biel, 30, and Timberlake, 31, tried on wedding bands.

Set to wed this August, the couple of five years spent over a half an hour Saturday in the shop with jewelry designer Eli Halili trying on wedding bands and perusing other pieces in the shop, including one-of-a-kind ancient rings and precious stone necklaces.

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Although they didn't select their wedding bands during Saturday's jaunt, the twosome did drop $6,500 -- buying a $2,200 ring (a 24 carat gold ring with a labradorite semi-precious stone) and two necklaces ($2,500 and $1,800, respectively).

No confirmation yet on what designer New Year's Eve actress Biel will select for her wedding gown.

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"Monique Lhuillier has sent over some sketches," says a Biel pal. "She's Jessica's first choice."

 As for the venue? The couple have reportedly been mulling locations from California to Italy. "It will be a big wedding," a source told Us. "They have lots of people they want to invite."

This article originally appeared on Jessica Biel, Justin Timberlake Try on Wedding Bands, Spend $6,500 on Jewelry