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3 Carat Diamond Engagement Rings

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want
18K Yellow Gold lumiere
  • 18k Yellow Gold lumiere
  • 3.42 Carat Emerald Lab Diamond, G Color, Super Ideal Cut, VS1 Clarity
$16,400
want
18K Yellow Gold sienna half coverage
  • 18k Yellow Gold sienna half coverage
  • 3.07 Carat Round Lab Diamond, J Color, Super Ideal Cut, VS2 Clarity
$11,500
want
Platinum lotus flower halo
  • Platinum lotus flower halo
  • 3.03 Carat Round Diamond, F Color, Super Ideal Cut, VVS1 Clarity
$57,950
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Platinum fortuna halo
  • Platinum fortuna halo
  • 3.02 Carat Emerald Diamond, D Color, Super Ideal Cut, VVS2 Clarity
$50,850
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18K White Gold waverly halo
  • 18k White Gold waverly halo
  • 3.06 Carat Oval Lab Diamond, G Color, Very Good Cut, SI1 Clarity
$16,100
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Platinum sienna three-quarter coverage
  • Platinum sienna three-quarter coverage
  • 3.04 Carat Round Lab Diamond, D Color, Super Ideal Cut, VVS2 Clarity
$38,300
want
18K White Gold six-prong petite comfort fit 1.5mm solitaire
  • 18k White Gold six-prong petite comfort fit 1.5mm solitaire
  • 3.32 Carat Round Diamond, F Color, Super Ideal Cut, VS2 Clarity
$48,300
want
18K White Gold ballad three-quarter coverage
  • 18k White Gold ballad three-quarter coverage
  • 2.93 Carat Round Lab Diamond, I Color, Super Ideal Cut, SI1 Clarity
$12,800
A three carat diamond ring is a stunning, distinctive choice.
want
Platinum six-prong petite comfort fit 1.5mm solitaire
  • Platinum six-prong petite comfort fit 1.5mm solitaire
  • 3.01 Carat Round Diamond, H Color, Super Ideal Cut, SI1 Clarity
$33,050
want
Platinum hazel solitaire
  • Platinum hazel solitaire
  • 3.30 Carat Round Lab Diamond, F Color, Super Ideal Cut, VS1 Clarity
$23,500
want
18K White Gold tapered baguette three stone
  • 18k White Gold tapered baguette three stone
  • 3.03 Carat Emerald Diamond, F Color, Ideal Cut, VS1 Clarity
$35,650
want
18K White Gold six-prong petite comfort fit 1.5mm solitaire
  • 18k White Gold six-prong petite comfort fit 1.5mm solitaire
  • 3.09 Carat Round Lab Diamond, E Color, Ideal Cut, VS1 Clarity
$22,600
want
18K White Gold sienna halo three-quarter coverage
  • 18k White Gold sienna halo three-quarter coverage
  • 3.32 Carat Oval Lab Diamond, I Color, Very Good Cut, VS1 Clarity
$19,000
want
18K White Gold four-prong comfort fit 1.5mm
  • 18k White Gold four-prong comfort fit 1.5mm
  • 3.05 Carat Round Lab Diamond, G Color, Super Ideal Cut, SI1 Clarity
$17,200
want
18K Yellow Gold ballad three-quarter coverage
  • 18k Yellow Gold ballad three-quarter coverage
  • 3.01 Carat Oval Diamond, Color, Cut, Clarity
$41,000
want
18K White Gold ballad three-quarter coverage
  • 18k White Gold ballad three-quarter coverage
  • 3.24 Carat Oval Lab Diamond, H Color, Very Good Cut, SI1 Clarity
$15,300
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Platinum comfort fit 2mm solitaire
  • Platinum comfort fit 2mm solitaire
  • 3.50 Carat Asscher Diamond, I Color, Ideal Cut, VS1 Clarity
$34,600
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Platinum twisted vine solitaire
  • Platinum twisted vine solitaire
  • 2.90 Carat Emerald Diamond, E Color, Super Ideal Cut, VVS2 Clarity
$47,700
Read our Diamond Guide to learn about cut, color, clarity, and carat weight so you can choose your perfect 3 carat diamond.
want
14K Rose Gold amelie half-coverage
  • 14k Rose Gold amelie half-coverage
  • 3.00 Carat Oval Diamond, G Color, Ideal Cut, VS2 Clarity
$49,050
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Platinum demi three-quarter coverage
  • Platinum demi three-quarter coverage
  • 2.80 Carat Round Lab Diamond, H Color, Super Ideal Cut, VS2 Clarity
$13,700
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18K White Gold comfort fit 2.5mm
  • 18k White Gold comfort fit 2.5mm
  • 3.01 Carat Emerald Lab Diamond, H Color, Very Good Cut, VS1 Clarity
$13,200
want
14K Rose Gold petite shared prong three-quarter coverage
  • 14k Rose Gold petite shared prong three-quarter coverage
  • 3.06 Carat Round Lab Diamond, G Color, Ideal Cut, SI1 Clarity
$19,000
want
Platinum catalina solitaire
  • Platinum catalina solitaire
  • 3.32 Carat Round Diamond, F Color, Super Ideal Cut, VS2 Clarity
$49,100
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18K White Gold catalina solitaire
  • 18k White Gold catalina solitaire
  • 3.02 Carat Round Lab Diamond, I Color, Ideal Cut, SI1 Clarity
$13,800
want
Platinum tapered baguette three stone
  • Platinum tapered baguette three stone
  • 3.02 Carat Emerald Lab Diamond, D Color, Good Cut, VVS1 Clarity
$49,100
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18K White Gold petite shared prong half coverage
  • 18k White Gold petite shared prong half coverage
  • 2.92 Carat Round Lab Diamond, D Color, Ideal Cut, SI1 Clarity
$22,600
We go beyond the industry standards for ethical sourcing to offer diamonds as pure as your love.
want
18K White Gold tapered baguette three stone
  • 18k White Gold tapered baguette three stone
  • 3.05 Carat Emerald Lab Diamond, I Color, Ideal Cut, VS1 Clarity
$15,700
want
Platinum fortuna halo
  • Platinum fortuna halo
  • 2.80 Carat Cushion Diamond, F Color, Very Good Cut, SI1 Clarity
$32,700
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Platinum luxe elodie
  • Platinum luxe elodie
  • 3.01 Carat Princess Lab Diamond, F Color, Super Ideal Cut, VS2 Clarity
$14,750
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18K White Gold luna 2mm bezel
  • 18k White Gold luna 2mm bezel
  • 3.01 Carat Emerald Diamond, J Color, Super Ideal Cut, VS1 Clarity
$25,310
want
Platinum elodie 1.8mm solitaire
  • Platinum elodie 1.8mm solitaire
  • 3.00 Carat Round Lab Diamond, H Color, Ideal Cut, SI2 Clarity
$14,350
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Platinum 1.4mm provence solitaire
  • Platinum 1.4mm provence solitaire
  • 3.00 Carat Oval Lab Diamond, J Color, Very Good Cut, SI1 Clarity
$11,050
want
18K White Gold six-prong petite comfort fit 1.5mm solitaire
  • 18k White Gold six-prong petite comfort fit 1.5mm solitaire
  • 3.04 Carat Round Lab Diamond, D Color, Good Cut, SI1 Clarity
$14,550
want
Platinum trillion cut three stone
  • Platinum trillion cut three stone
  • 3.46 Carat Asscher Lab Diamond, J Color, Very Good Cut, SI1 Clarity
$13,550
want
Platinum budding willow solitaire
  • Platinum budding willow solitaire
  • 3.17 Carat Emerald Lab Diamond, G Color, Very Good Cut, VVS2 Clarity
$21,550
want
18K Yellow Gold twisted vine solitaire
  • 18k Yellow Gold twisted vine solitaire
  • 3.09 Carat Round Lab Diamond, I Color, Super Ideal Cut, SI1 Clarity
$11,610
want
14K Rose Gold willow
  • 14k Rose Gold willow
  • 3.00 Carat Oval Diamond, G Color, Ideal Cut, VS2 Clarity
$48,450
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18K White Gold amelie half-coverage
  • 18k White Gold amelie half-coverage
  • 3.01 Carat Round Diamond, H Color, Super Ideal Cut, SI1 Clarity
$33,880
want
Platinum north star solitaire
  • Platinum north star solitaire
  • 3.01 Carat Oval Diamond, D Color, Very Good Cut, VS2 Clarity
$45,500
want
Platinum elodie 1.8mm solitaire
  • Platinum elodie 1.8mm solitaire
  • 3.25 Carat Cushion Lab Diamond, E Color, Super Ideal Cut, VS1 Clarity
$18,700
want
18K Yellow Gold viviana three-quarter coverage
  • 18k Yellow Gold viviana three-quarter coverage
  • 3.01 Carat Oval Diamond, D Color, Very Good Cut, VS2 Clarity
$46,250
want
18K Yellow Gold demi three-quarter coverage
  • 18k Yellow Gold demi three-quarter coverage
  • 3.02 Carat Radiant Lab Diamond, E Color, Super Ideal Cut, VS2 Clarity
$21,400
want
18K White Gold tapered baguette three stone
  • 18k White Gold tapered baguette three stone
  • 3.33 Carat Emerald Lab Diamond, F Color, Super Ideal Cut, VS1 Clarity
$17,750
want
18K White Gold waverly halo
  • 18k White Gold waverly halo
  • 3.02 Carat Cushion Lab Diamond, D Color, Good Cut, VS2 Clarity
$19,200
want
14K Rose Gold luna 2mm bezel
  • 14k Rose Gold luna 2mm bezel
  • 3.01 Carat Cushion Diamond, H Color, Ideal Cut, VS2 Clarity
$32,250
want
Platinum sienna three-quarter coverage
  • Platinum sienna three-quarter coverage
  • 3.03 Carat Round Lab Diamond, G Color, Ideal Cut, VS2 Clarity
$21,150
want
Platinum catalina solitaire
  • Platinum catalina solitaire
  • 3.32 Carat Round Diamond, F Color, Super Ideal Cut, VS2 Clarity
$49,150
want
18K Yellow Gold comfort fit 2mm solitaire
  • 18k Yellow Gold comfort fit 2mm solitaire
  • 3.01 Carat Round Diamond, J Color, Super Ideal Cut, SI2 Clarity
$32,850
want
Platinum petite shared prong half coverage
  • Platinum petite shared prong half coverage
  • 3.02 Carat Cushion Diamond, G Color, Very Good Cut, SI2 Clarity
$26,700
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What could be more glamorous than a 3 carat diamond ring? A classic, ever-coveted choice, 3 carat diamond rings come in all traditional diamond shapes – round, oval, cushion, princess, pear, emerald, asscher, heart, marquise, and radiant. 3 carat diamonds also come in wide-ranging grades of cut, color, and clarity (alongside carat these categories comprise the famous 4 Cs). Lustrous plain metal bands, pavé diamond bands, and three stone settings can all compliment a 3 carat diamond ring center stone perfectly, so choose a setting that resonates with you and your partner's style.


To learn more about 3 carat diamond engagement rings, please contact our jewelry specialists who are happy to answer your questions via phone, chat, virtual or in-person appointment. In addition to our selected engagement ring settings, you can also inquire about creating a custom 3 carat diamond ring if you're looking for a truly unique, one-of-a-kind design.

Shop All Engagement Rings
Engagement Ring Guide
1/2 Carat Diamond Engagement Rings
3/4 Carat Diamond Engagement Rings
1 Carat Diamond Engagement Rings
1.5 Carat Diamond Engagement Rings
2 Carat Diamond Engagement Rings
The price of a 3-carat diamond ring depends on several factors such as the quality of the diamond, the shape and cut of the stone, and the metal used for the band. Generally, a 3-carat diamond ring can cost anywhere from $10,000 to $100,000 or more. Diamonds with high clarity, color, and cut grades will be more expensive, as well as those with unique shapes or designs.
Yes, it is possible to insure a 3-carat diamond ring. It is recommended to insure expensive jewelry like diamond rings, as they can be lost, stolen, or damaged. Many insurance companies offer coverage for jewelry, including engagement rings. To insure a 3-carat diamond ring, you will need to have it appraised by a professional and provide the insurance company with documentation and photographs. The cost of insurance will depend on several factors, including the value of the ring, where you live, and the type of coverage you choose. At Brilliant Earth, we partner with Lavalier Insurance, a jewelry-specific insurer.

While a 3 carat diamond engagement ring can be expensive, there are ways to stay within a budget. Here are some tips:

  • Consider a lower color or clarity grade: A diamond with a lower color or clarity grade can be less expensive while still looking beautiful.
  • Choose a simple setting: A simple setting style can be less expensive than a more elaborate design.
  • Consider alternative gemstones: If a diamond is not in your budget, consider alternative gemstones such as moissanite or sapphire, which can mimic the look of a diamond at a lower price.

When it comes to 3 carat diamond rings, there are several types of settings that you can choose from. Here are some of the most popular options:

  • Solitaire: This is the most classic and traditional setting for an engagement ring. It features a single diamond on a plain metal band.
  • Halo: A halo setting features a center diamond surrounded by a ring of smaller diamonds, which can make the center stone appear larger and more brilliant.
  • Three-stone: A three-stone setting features a center diamond flanked by two smaller diamonds on either side. It represents the past, present, and future of a relationship.
  • Pavé: In a pavé setting, small diamonds are set closely together to create a sparkling, diamond-encrusted band.
  • Channel: A channel setting features diamonds set into a channel in the band, with no prongs or other metal visible.
  • Bezel: In a bezel setting, the diamond is surrounded by a metal rim that holds it securely in place. This can be a good option for active people, as it offers more protection to the diamond than some other settings.

The diamond shape you choose for a 3 carat ring is a matter of personal preference, but some shapes tend to be more popular than others. Here are some of the most popular diamond shapes for a 3 carat ring:

  • Round: This is the most classic and timeless diamond shape, and it's also the most popular for engagement rings.
  • Princess: Princess-cut diamonds are square or rectangular in shape, with pointed corners. They're a popular alternative to round diamonds and can be more affordable.
  • Cushion: Cushion-cut diamonds are square or rectangular with rounded corners and have a vintage feel. They're also known as "pillow-cut" diamonds.
  • Emerald Cut: Emerald-cut diamonds are rectangular with cut corners and have a step-like appearance. They're a popular choice for those who prefer a more understated look.
  • Oval: Oval-cut diamonds are elongated and have a flattering shape that can make fingers look longer and slimmer.
  • Pear: Pear-shaped diamonds are a combination of a round and a marquise shape, with a tapered point on one end. They're a unique and elegant choice for an engagement ring.