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The 25 Best Sapphire Engagement Rings for the Princess Diana-Obsessed

Looking for a sparkler fit for royalty? Sapphire engagement rings come in a variety of hues and unique styles. Here are our top picks for a regal show-stopper.
sapphire engagement ring
Getty Images/Blue Nile
shelley brown - the knot
by Shelley Brown
shelley brown - the knot
Shelley Brown
Senior Fashion & Beauty Editor
  • Shelley writes and edits articles for The Knot Worldwide, with a speciality in fashion, beauty, jewelry and accessories
  • Shelley writes and edits articles for The Knot magazine, as well as styles the magazine’s fashion and cover shoots
  • Prior to The Knot Worldwide, Shelley was a freelance Digital Editor at Conde Nast’s Lucky Magazine and freelanced for FLAUNT Magazine, Los Angeles Magazine, Backstage.com and Paste.com
Updated Nov 16, 2020
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If you're in the market for a colorful sparkler, a sapphire engagement ring is timeless. It's no wonder sapphires have been one of the most popular precious gemstones for centuries—they're a gorgeous "something blue," with lots of sentimental meaning. They're also considered one of the "Big Four" of precious jewels, alongside rubies, emeralds and diamonds. On a more technical note, these durable stones appeal to jewelers because they have a hardness of nine on the Mohs scale (diamonds are a 10). So if you're looking for a sturdy center stone that also stands out from the crowd, a sapphire ring might be for you. 

What Does a Sapphire Engagement Ring Mean?

The meaning behind sapphire engagement rings goes way, way back. In ancient cultures, sapphire talismans were thought to have strong medicinal and protective powers because their blue color symbolized the heavens, says Yehouda Saketkhou, CEO of Yael Designs. A representation of honesty and wisdom, sapphires soon became the preferred gem of medieval royalty and clergy. Kings even wore them when they signed treaties as a symbol of good luck. In modern day, sapphire engagement rings are associated with wisdom and fidelity, as well as old-world romance. They're the traditional gift for a 45th wedding anniversary, and just so happen to be the engagement ring of choice for the British royal family. After all, Kate Middleton's stunning 18-carat, blue sapphire engagement ring given to her by Prince William was originally presented to Princess Diana, and is perhaps one of the most famous sparklers in the world.

Where Do Sapphires Come From?

While some of the most valuable sapphires in history were mined in Kashmir and Myanmar (Burma), these days most of the world's sapphires come from Sri Lanka and Australia, says Douglas Hucker, CEO of the American Gem Trade Association. Since Sri Lanka has been producing sapphires for thousands of years (like the Logan sapphire, one of the largest sapphires in the world), you'll pay for the historic connection, Hucker says. There are also smaller artisanal mines that use old-fashioned techniques (read: digging and sifting for stones by hand) in Madagascar. Though production in this developing country is spottier than in others, some of the sapphires produced there are just as high quality as those from Sri Lanka. Though not as valuable, sapphires are also mined in Montana.

Choosing the Right Sapphire Engagement Ring for You 

It goes without saying that the most important quality in a blue sapphire is the richness of its color. A perfect blue sapphire will be royal blue without any modifying colors, such as gray, green or black, which might make the stone look inky or change its hue, according to Hucker. The cut of a sapphire isn't as important as the cut of a diamond, because it's harder to see inclusions (read: internal flaws) in darker stones with the naked eye. No standardized quality-grading system exists for colored gemstones, but it's rare to find a natural sapphire without inclusions. Bottom line: Don't worry about finding a flawless stone—as long as there aren't severe dark inclusions, you're good. No matter the shape of your stone (as long as it's symmetrical), look for one with even color and consistent sparkle. As with any gemstone, the setting choose will also help to determine the overall style of your bling. For example, an oval sapphire in an geometric white gold setting with pave details has an art deco feel, while a round stone in a yellow gold setting has a more modern vibe.

Pro tip: This may sound super technical, but it's important to know whether or not your sapphire is natural or heat treated. Some sapphires are found closer to thermal venting in the earth, which produces saturated color thanks to natural heating. More commonly, sapphires are treated with heat to enhance the richness of their color. Naturally vibrant sapphires that don't require any heat treatment will command a premium price, but they're also very hard to find, says Deirdre Featherstone, founder of Featherstone Design. Before you obsess over finding an untreated sapphire, know that heat treatments are permanent and don't affect the quality. In some cases, they can strengthen the chemical makeup, Hucker says. However, make sure you're dealing with a reputable jeweler who uses standard treatments—not nonstandard ones like dyeing—before you buy.

Other Colorful Sapphires 

If a blue sapphire ring isn't your thing, don't fret. While blue sapphires are the rarest and most valuable, this gorgeous stone actually occurs in a rainbow of hues—and other colors tend to be more budget friendly. Sapphires that aren't blue (think: pink sapphires and yellow sapphires) are a great option if you want the look of a pink or yellow diamond engagement ring but don't want to splurge.

Caring for Your Sapphire Engagement Ring 

Though sapphire rings are almost as durable as diamond rings, they still require special care. Grace Terezian, creative director of Kirk Kara, recommends using warm water, mild soap and a soft-bristle toothbrush for everyday cleaning. Take your sapphire ring to a jeweler for an in-depth cleaning at least once a year. If you own an estate piece, have your jeweler check the security of the stone once in a while—prong settings in particular can loosen over time.

Trendy Sapphire Engagement Rings in 2020

Feeling a sapphire engagement ring now? Shop some of our fave rings styles below.

Oval sapphire engagement ring with sunburst halo

Blue Nile oval sapphire ring with double diamond sunburst halo in 14K White Gold, $4,100, BlueNile.com 

White gold engagement band with sapphire stone

Grace Lee Demi Demi plus 8 blue sapphire ring in 14K White Gold, $2,880, GraceLee.com

Sapphire engagement ring with two-tone pavé band

Ashley Zhang sapphire pavé rolling ring in 14K Yellow Gold Setting and 14K White Gold Diamond Pavé Band, $3,000, AshleyZhangJewelry.com


sapphire engagement rings

James Allen blue sapphire oval cut halo engagement ring in 14K Rose Gold, $3,080, JamesAllen.com

Sapphire engagement ring on gold band

Jennifer Meyer sapphire ring in 18K Yellow Gold, $2,500, NET-A-PORTER.com

Art deco sapphire engagement ring

Ashley Zhang Chloe art deco sapphire ring in Platinum, $6,000, AshleyZhangJewelry.com

sapphire engagement ring

Minka Jewels 3-Way sapphire and diamond ring, Inquire for Details, MinkaJewels.com

Multi-stone sapphire engagement ring on yellow gold band

Wwake Blue Vistas ring in 14K Yellow Gold, $2,540, CatbirdNYC.com

sapphire engagement ring

Emma Clarkson Webb Sarah 18 ct yellow gold sapphire engagement ring, Inquire for Details, EmmaCWebb.com

Blue sapphire engagement ring on gold band

Nora Kogan Blue Velvet ring in 18K Yellow Gold, $1,950, NoraKogan.com

Blue sapphire engagement ring with diamond sunburst halo

Oscar Heyman oval sapphire diamond-trim ring in Platinum, $55,500, NeimanMarcus.com

Blue sapphire and diamond engagement ring

Jennie Kwon Painter's blue sapphire ring in 14K Yellow Gold, $675, CatbirdNYC.com

Cushion cut sapphire engagement ring on platinum band

Kwiat cushion cut sapphire engagement ring in Platinum, Inquire for Details, Kwiat.com 

Princess cut sapphire engagement ring on diamond encrusted band

Ritani Valentina ring in 18K White Gold, $1,955, Ritani.com

Sapphire and diamond ring stack

Spinelli Kilcollin sapphire and diamond rings in 18K Gold, $9,600, NET-A-PORTER.com

Emerald cut sapphire engagement ring with baguette diamonds

Featherstone Fine Jewelry emerald cut sapphire ring in Platinum, Inquire for Details, FeatherstoneDesign.com 

sapphire engagement ring

Ashley Zhang The Harper Sapphire Diamond Halo ring, $3,950, AshleyZhangJewelry.com

Blue sapphire and diamond crown engagement ring

Yi Collection blue sapphire and diamond crown ring in 18K Yellow Gold, $1,950, YiCollection.com 

sapphire engagement ring

Anna Sheffield Bea Suite No. 30 rings, $9,350, AnnaSheffield.com

Diamond and sapphire rose gold engagement ring

Selim Mouzannar Beirut diamond sapphire ring in 18K Rose Gold, $1,569, FarFetch.com

Pink sapphire engagement ring

Tiffany & Co. Legacy pink sapphire ring in Platinum, Inquire for Details, Tiffany.com

Pink sapphire engagement ring with emerald cut side stones

Blue Nile emerald-cut pink sapphire ring with diamond trapezoid side stones in 18k White Gold, $16,000, BlueNile.com

Pink sapphire cushion cut engagement ring

David Yurman DY Capri pink sapphire cushion engagement ring in Platinum, Inquire for Details, DavidYurman.com

Yellow sapphire oval cut engagement ring with baguette side stones

James Allen yellow sapphire oval cut side stone engagement ring in 14K Yellow Gold, $2,190, JamesAllen.com

Green sapphire three-stone engagement ring

Natalie Marie Jewellry green sapphire tulip trio ring in 18K Yellow Gold, $4,438, NatalieMarieJewellry.com 

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