December is a hot month for engagements. See the ring trends inspired by celebs like JLo, Duchess Meghan

Your social media feeds are likely to get a little more glitzy as couples ring in the New Year with new bling.

December sees more engagements than any other month, according to the 2018 Brides American Wedding Study. This is true for other places around the world, per the 2019 Global Wedding Report from The Knot, WeddingWire and Bodas.net, which looked at 14 countries including the U.K., Brazil, France and Mexico.

Some of the sparklers you'll likely see will showcase a couple's desire to personalize the engagement experience as well as the influence of celebrities, both which have spurred engagement ring trends. To find out more, we spoke to Katie Zimmerman, chief merchandising officer for jeweler Blue Nile, and Kathryn Money, VP of strategy and merchandising for jeweler Brilliant Earth.

Diamonds in different shapes

Zimmerman says step cut diamonds – which include emerald, baguette, some cushions and Asscher-cut – are "very much on trend," noting the ring Jennifer Lopez received from fiancé Alex Rodriguez in March, which featured an emerald-cut center stone and other step-cut diamonds.

Lopez's ring falls into a trend of elongated cuts like emerald, oval, some cushion and pear. Money believes interest is driven, in part, by the stars sporting the look like Katherine Schwarzenegger, Bindi Irwin and "Real Housewives of Orange County" cast member Kelly Dodd.

"There’s just a long list of celebrities that have been opting for these elongated cuts," Money says, "and they create a really flattering look on your finger because it elongates the wearer's finger."

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Rings with hidden details

Classic styles are getting an upgrade with unexpected detailing, like diamonds beneath the rock (in the ring's gallery), milgrain work and filigree hand-engraving.

"That’s probably my favorite trend," Zimmerman says, "because to me it makes the diamond the center stage of everything and really kind of lifts it up."

There's an 'uptick' of yellow gold

No, yellow gold isn't replacing white gold or white metal in popularity, but Zimmerman says she's seeing an "uptick."

"It’s kind of how we saw rose gold really hit the runway a couple years ago," she says.

Money says the trends appeared to take off around the time of Prince Harry's engagement to Duchess Meghan in November 2017. While Harry designed the Cleave and Co. ring originally with a gold band, it was later swapped for a thinner, pave diamond band. "It’s just a really beautiful, warm tone," Money says of yellow gold. "It pairs beautifully with classic and contemporary and vintage-inspired styles, so, it’s very timeless in that regard."

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Stones are coming in threes

Meghan's cushion diamond also featured a pair of round sidestones from Princess Diana's personal collection, which Money attributes to the popularity of rings with a trio of rocks. "Fancy-shaped sidestone accents in general have been getting a lot of emphasis," she says. "Tapered baguettes, more unique shapes, like a trillion, or a marquise or a pear have definitely been a way to just add a little interesting detail and incorporate something a little more unique and contemporary into a ring."

Sidestones are a place where color can be added for extra personalization, suggests Zimmerman.

Stacking bands can reflect personality

Zimmerman and Money feel bands can offer couples a way to put their own spin on traditional engagement rings. From crescent-shaped bands nested around the center diamond to multiple bands to representing milestones such as anniversaries, stacking is a great way to "express individuality," says Money, citing Hailey Bieber, whose sizeable oval ring has been worn with varying bands, including chevron and a thicker eternity band.

Lab diamonds are affordable

Money predicts the popularity of jewels made in a lab mimicking the production of natural diamonds will continue. Millennial consumers are drawn to lab diamonds, she says, which don't require mining and are more affordable.

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This article originally appeared on USA TODAY: Engagement ring trends: Emerald cut, yellow gold, lab created diamonds