Skip to main content

5 Carat Diamond Engagement

37
to
563
4,842
1,273
1,332
856
789
220
194
160
26
23
17
7
5
2
1
3
204
2,770
3,467
105
134
535
384
86
149
47
69
88
116
3
295
126
110
90
86
4,588
1,842
19
6,433
16
3,862
1,958
1,800
1,135
1,287
6,241
910
470
462
1,159
1
1359
780
602
443
355
to
Sort By
Rare 5 Carat Cushion Brilliant Cut GIA Certified Engagement Ring
By Diamond Scene
Located in New York, NY
A beautiful and striking diamond set in an elegant delicate diamond mounting. 5.01 Cushion
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond

5 carat Yellow Diamond Ring
By Diamond Scene New York
Located in New York, NY
GIA certified 5 carat Fancy Light Yellow, VS1 clarity Cushion cut center diamond. .70 carats of
Category

21st Century and Contemporary Engagement Rings

Materials

Yellow Diamond, 18k Gold, Platinum

Scarselli 5 Carat Fancy Yellow Diamond Engagement Ring
By SCARSELLI
Located in New York, NY
From SCARSELLI, this 5-carat Fancy Yellow Diamond GIA certified (see certificate picture for
Category

2010s American Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Platinum

Vivid Diamonds GIA Certified 2.14 Carat Diamond Halo Engagement Ring
By Vivid Diamonds
Located in Miami, FL
Sensational diamond halo engagement ring showcasing a stunning GIA certified emerald cut diamond
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, Platinum

5 carat canary and white diamond engagement ring
Located in Dublin, IE
View Available Gemstones View Available Diamonds 2 ROUND 1.75 Shared Prong View Available Gemstones
Category

2010s Irish Modern Engagement Rings

Materials

White Diamond, Yellow Diamond, 14k Gold, White Gold

EGL Certified 5 Carat Pear Cut Diamond Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
Here is a classic oversized diamond engagement ring by Antinori di Sanpietro ROMA The center
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond

GIA Certified 5 Carat Emerald Cut Diamond Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
dazzling 5-carat emerald-cut diamond, certified by the Gemological Institute of America (GIA). The diamond
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

GIA Certified 5 Carat Oval Diamond Solitaire Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
solid 18 carats white gold the main stone is 5 carat Excellent Polish Excellent Symmetry
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, 18k Gold, White Gold

GIA Certified 5 Carat Emerald Cut Diamond Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
5.03 ct total weight Platinum Emerald Cut Diamond Engagement Ring. The ring weighs 10.4 grams
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, Emerald, Platinum

5 Carat Round Brilliant Diamond Engagement Ring Certified
Located in New York, NY
Sutton 5 Carat Round Brilliant Diamond Engagement Ring in 14k Rose Gold By Mike Nekta Diamonds
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, Rose Gold

GIA Certified 5 Carat Oval Diamond Engagement Ring D COLOR
By Antinori Fine Jewels
Located in Rome, IT
Stunning 5-carat diamond ring, the main stone boasting an ideal ratio that enhances its graceful
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond

GIA Certified 5 Carat Emerald Cut Diamond Solitaire Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
This exquisite ring features a GIA Certified 5 carat Emerald cut diamond of K color and SI1
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

0.50 Carat Princess Diamond 18 Karat Gold Solitaire Hasbani Engagement Ring
By Hasbani Diamonds
Located in London, GB
A modern classic engagement ring. Handmade in 18 Karat Gold, with a 0.50 Carat White Diamond. Set
Category

2010s British Modern Engagement Rings

Materials

Topaz, Tourmaline, Amethyst, Aquamarine, Citrine, Diamond, White Diamond...

5 carat Fancy Yellow Pear Shape Diamond Ring
By Diamond Scene New York
Located in New York, NY
diamond. .85 carats of white colorless round brilliant cut diamonds set in a custom platinum and 18k
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, 18k Gold, Platinum

5 Carat Radiant Cut Diamond Engagement Ring GIA Certified
Located in New York, NY
SAIFA -5 CARAT RADIANT CUT THREE STONE YELLOW DIAMOND ENGAGEMENT RING PLATINUM & 18K GOLD CERTIFIED
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

Platinum Engagement 0.68 Carat Round Diamond Bespoke Twisted Love 4 Prong Ring
By Hasbani Diamonds
Located in London, GB
encrusted upper branch the mount total diamond weight is 0.18 carat, the centre stone is lovely half carat
Category

2010s British Modern Engagement Rings

Materials

Blue Sapphire, Pink Sapphire, Yellow Sapphire, Green Sapphire, Tanzanite...

GIA Certified 5 Carat Pear Cut Diamond Pave Engagement Platinum Ring
By Antinori Fine Jewels
Located in Rome, IT
and modern design. **Center Diamond:** The centerpiece of this sophisticated ring is a stunning 5
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

GIA Certified 5 Carat G VS1 Pear Diamond Engagement Ring "Violet"
Located in New York, NY
beacon of refined elegance and luxury. Taking center stage is a GIA Certified 5 Carat pear-shaped diamond
Category

2010s American Modern Engagement Rings

Materials

Diamond

GIA Certified 5 Carat H VS1 Oval Diamond Engagement Ring "Violet"
Located in New York, NY
symbol of refined luxury. Centered upon a GIA Certified 5 Carat oval cut diamond, this ring is the
Category

2010s American Modern Engagement Rings

Materials

Diamond

GIA Certified 5 Carat Fancy Yellow Asscher Cut Diamond Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
and distinction. It showcases a resplendent 5-carat Asscher cut diamond, GIA certified and imbued with
Category

2010s Unknown Contemporary Engagement Rings

Materials

Diamond, Yellow Diamond, 18k Gold, Yellow Gold

GIA Certified 5 Carat Oval Fancy Yellow Diamond Ring
By Diamond Scene New York
Located in New York, NY
A FABULOUS yellow diamond ring with deep vibrant yellow color! GIA Certified 5.05 carat Fancy
Category

21st Century and Contemporary Engagement Rings

Materials

Yellow Diamond

0.70 Carat Round Diamond Twisted 18 Karat White Gold 4 Prong Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat White Gold, with a total of 0.70 Carat White Diamond. Set in an open gallery
Category

2010s British Modern Engagement Rings

Materials

Blue Sapphire, Pink Sapphire, Yellow Sapphire, Green Sapphire, Tanzanite...

0.68 Carat Round Side Band Diamond Solitaire 18 Karat Rose Gold Engagement Ring
By Hasbani Diamonds
Located in London, GB
ring. Handmade in 18 Karat Rose Gold, with a total of 0.68 Carat White Diamonds. Set in an open gallery
Category

2010s British Modern Engagement Rings

Materials

Blue Sapphire, Pink Sapphire, Yellow Sapphire, Green Sapphire, Tanzanite...

Tiffany & Co. 5 Carat Platinum Oval Cut Diamond Solitaire Engagement Ring.
By Tiffany & Co.
Located in Rome, IT
Tiffany & Co. 5.01 ct Platinum Oval Cut Diamond Solitaire Engagement Ring. The ring weighs 7
Category

2010s American Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

Bespoke Halo Mount for 3-5 Carat Yellow White Diamond Oval Shape Platinum Ring
By Hasbani Diamonds
Located in London, GB
This Spectacular Bespoke mount is suitable for a 3 - 5 Carat center diamond with 0.93 Carat of
Category

2010s British Modern Engagement Rings

Materials

Amethyst, Aquamarine, Citrine, Diamond, White Diamond, Pink Diamond, Eme...

GIA Certified 5 Carat Platinum Round Brilliant Cut Diamond Engagement Ring 3X
By Antinori Fine Jewels
Located in Rome, IT
GIA Certified 5 Carat Round Brilliant Cut Diamond Solitaire Engagement Ring. The main diamond is a
Category

2010s Italian Engagement Rings

Materials

Diamond, White Diamond, Emerald, Platinum

5+ Carat GIA Fancy Vivid Yellow Radiant Diamond Engagement Ring Pink Diamond 18k
By SCARSELLI
Located in New York, NY
GIA-certified 5+ carat Fancy Vivid Yellow radiant-cut natural diamond engagement ring set in
Category

2010s American Contemporary Engagement Rings

Materials

Pink Diamond, Yellow Diamond, Platinum, Rose Gold, 18k Gold

Natural Diamond Ring 0.51 carats 18 Karat White Gold 5 Diamonds Engagement Ring
Located in Antwerpen, BE
planning a proposal or looking to reaffirm your love, our Round-shape Diamond Engagement Ring is the
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

I Flawless GIA Certified 5 Carat Pear Cut Diamond Solitaire Engagement Ring
By Antinori Fine Jewels
Located in Rome, IT
. The star of the show is a dazzling 5-carat pear-cut diamond, exuding brilliance with its H color and
Category

2010s Italian Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

5 Carat Pear Shape Diamond Engagement Ring Certified FIOP VS1
Located in New York, NY
of the ring is a stunning pear-shaped diamond, measuring 2.89 carats and graded VS1 in clarity. The
Category

2010s American Engagement Rings

Materials

Pink Diamond, Diamond, 18k Gold, White Gold

5 Carat Cushion Cut Diamond Engagement Ring GIA Certified LY
Located in New York, NY
JOANA LIGHT YELLOW DIAMOND ENGAGEMENT PLATINUM & 18K WHITE GOLD RING BY MIKE NEKTA GIA CERTIFIED
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

5 Carat Radiant Cut Diamond Engagement Ring GIA Certified FIY
Located in New York, NY
KATYA YELLOW DIAMOND ENGAGEMENT PLATINUM & 18K WHITE GOLD RING BY MIKE NEKTA GIA CERTIFIED Center
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

5 Carat Marquise Cut Diamond Engagement Ring Certified J IF
Located in New York, NY
Center Earth Mined Diamond: Carat Weight: 3.05 Carats Color: J* Clarity: IF Style: Marquise Cut
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

5 Carat Cushion Cut Diamond Engagement Ring Certified G VS2
Located in New York, NY
Center Diamond: Carat Weight: 4.07 Carats Color : G Clarity: VS2 Style: Cushion Cut Feather
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

5 Carat Pear Shape Diamond Engagement Ring GIA Certified FIY SI1
Located in New York, NY
Kendall 5 Carat Fancy Intense Yellow SI1 Pear Shape Diamond Engagement Ring in White Gold. GIA
Category

2010s American Engagement Rings

Materials

Diamond, Yellow Diamond, White Gold

5 Carat Radiant Cut Diamond Engagement Ring GIA Certified I VS2
Located in New York, NY
LOLA - RADIANT CUT THREE STONE DIAMOND ENGAGEMENT RING BY MIKE NEKTA GIA CERTIFIED Center Diamond
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

5 Carat Oval Cut Diamond Engagement Ring GIA Certified E VS1
Located in New York, NY
Maisie 5 Carats E VS1 Oval Cut Diamond Engagement Ring in 18k White Gold By Mike Nekta GIA
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

5 carat Pear Shape Fancy Yellow Three Stone Diamond Engagement Ring
Located in New York, NY
Elevate your love story with the enchanting beauty of this 5 Carat Pear Shape Fancy Yellow Three
Category

21st Century and Contemporary American Modern Engagement Rings

Materials

Diamond, 18k Gold, Platinum

Tiffany & Co. 5 Carat Oval Diamond Platinum Engagement Ring F COLOR VS1 Clarity
By Tiffany & Co.
Located in Rome, IT
This stunning ring features a 5 carat oval brilliant cut diamond of F color and VS1 clarity as
Category

2010s American Modern Engagement Rings

Materials

Diamond, White Diamond, Platinum

5 Carat Emerald Cut Diamond Engagement Ring GIA Certified F VS1
Located in New York, NY
RIMA EMERALD CUT THREESTONE DIAMOND ENGAGEMENT RING PLATINUM GIA CERTIFIED Center Diamond Carat
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

5 Carat Pear Shape Diamond Engagement Ring GIA Certified FP VS1
Located in New York, NY
AMAKA -4CT PEAR SHAPED FAINT PINK DIAMOND ENGAGEMENT RING BY MIKE NEKTA GIA CERTIFIED Center
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

5 Carat Oval Cut Diamond Engagement Ring GIA Certified E VVS1
Located in New York, NY
EMMA DIAMOND ENGAGEMENT PLATINUM RING BY MIKE NEKTA GIA CERTIFIED Center Diamond: Carat Weight: 4
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

5 Carat Round Cut Diamond Engagement Ring EGL Certified E VS2
Located in New York, NY
ZETA HALO DIAMOND ENGAGEMENT RING 18K WHITE GOLD CERTIFIED Center Diamond Carat Weight: 3.6
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

5 Carat Round Cut Diamond Engagement Ring GIA Certified E VS1
Located in New York, NY
MICOLA 5 CT DIAMOND ENGAGEMENT RING BY MIKE NEKTA GIA CERTIFIED Center Diamond: Carat Weight: 5
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

5 Carat Round Cut Diamond Engagement Ring GIA Certified K SI1
Located in New York, NY
Center Diamond: Carat Weight: 5 Carats Color : K Clarity: SI1 Style: ROUND BRILLIANT Approximate
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

5 Carat Pear Shape Diamond Engagement Ring GIA Certified F VS1
Located in New York, NY
GIA CERTIFIED Center Diamond: Carat Weight: 4.00 Carats Color : F* Clarity: VS1 Style: Pear Shape
Category

2010s American Engagement Rings

Materials

Diamond, Platinum

1.44 Carat Diamond Engagement Ring
Located in New York, NY
A simple and classic diamond engagement ring with the center stone weighing 1.44 carats, and the
Category

20th Century American Art Deco Engagement Rings

Materials

Diamond, Platinum

5 Carat Oval Cut Diamond Engagement Ring GIA Certified F VS1
Located in New York, NY
ABBY DIAMOND ENGAGEMENT PLATINUM RING BY MIKE NEKTA GIA CERTIFIED Center Diamond: Carat Weight
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, White Gold

5 Carat Cushion Cut Diamond Engagement Ring GIA Certified NFY VS1
Located in New York, NY
TOHIL- CUSHION CUT THREE STONE TRILLION FANCY YELLOW DIAMOND ENGAGEMENT RING BY MIKE NEKTA GIA
Category

2010s American Engagement Rings

Materials

Diamond, 14k Gold, 18k Gold, Yellow Gold

5 Carat Oval Cut Diamond Engagement Ring GIA Certified G VVS1
Located in New York, NY
This gorgeous 3.46-carat oval cut diamond stone ring is made from the finest quality materials
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

5 Carat Oval Cut Diamond Engagement Ring GIA Certified G IF
Located in New York, NY
Earth Mined Diamond: Carat Weight: 4.01 Carats Color: G* Clarity: IF Style: Oval Shape *This Diamond has
Category

2010s American Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Leo Diamond Engagement Ring Princess 0.72 Carat H SI1 14 Karat White Gold
By The Leo Diamond
Located in San Diego, CA
: 14K White Gold Size: 5 - sizable Total Carat Weight: 0.72 CT Diamond Shape: THE LEO PRINCESS CUT
Category

21st Century and Contemporary American Engagement Rings

Materials

Diamond, 14k Gold, White Gold

5 Carat Green Emerald Cushion Cut Diamond Halo Ring GIA Certified No Oil
By Diamond Scene New York
Located in New York, NY
an 18k yellow gold and platinum diamond setting with 1.08 carats of white round brilliant cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, White Diamond, Emerald

5 Ct Ceylon Sapphire Diamond Platinum Engagement Ring
Located in Chicago, IL
belonged to the same ring as the sapphire. Total sapphire weight is 5.06 carats. Total diamond weight is
Category

2010s Engagement Rings

Materials

Diamond, Sapphire, Blue Sapphire, Platinum

5 Carat Paraiba Tourmaline Sugarloaf Cabochon Engagement Ring
Located in Santa Barbara, CA
The Pedrina 5 carat Paraiba tourmaline engagement ring is absolutely incredible. A rare and
Category

2010s Art Deco Engagement Rings

Materials

Diamond, Tourmaline, Paraiba, 18k Gold, White Gold

Leo Round Diamond Solitaire Engagement Ring 0.67 Carat I SI1 14 Karat White Gold
By The Leo Diamond
Located in San Diego, CA
Certificate: IGI # 33378743 Metal: 14K White Gold Size: 5 - Sizable Total Carat Weight: 0.67 CTS Diamond
Category

Early 2000s American Engagement Rings

Materials

Diamond, White Gold, 14k Gold

5-Stone Diamond and Platinum Engagement Ring
Located in New York, NY
This engagement ring features 3 emerald cut diamonds weighing 1.37 carats and 2 baguette cut
Category

21st Century and Contemporary Engagement Rings

Materials

Diamond, Platinum

Round Diamond Flower Engagement Ring "Lily #5"
Located in Hertsliya, IL
Unique Lily #5 Diamond Flower Engagement Ring. "Lily" flower means - Pure. The flower lily is a
Category

2010s Israeli Art Deco Engagement Rings

Materials

Diamond, 14k Gold

Natural Diamond 1.00 Carats 18 Karat White Gold 5 Solitaire Engagement Ring
Located in Antwerpen, BE
Step into timeless elegance with our Italian Handmade 5 Round Cut Engagement Ring, meticulously
Category

2010s Belgian Modern Engagement Rings

Materials

Diamond, 18k Gold, White Gold

Art Deco Platinum Baguette Diamond 5 Carat Oval Blue Spinel Engagement Ring
Located in Los Angeles, CA
5.04 Carats, 48 Tapered Baguette Diamonds, 24 Round Diamonds G-H Color SI1 Clarity 1.96 Carats. 7
Category

21st Century and Contemporary American Art Deco Engagement Rings

Materials

Diamond, Spinel, Platinum

  • 1
  • ...
Get Updated with New Arrivals
Save "5 Carat Diamond Engagement", and we’ll notify you when there are new listings in this category.

5 Carat Diamond Engagement For Sale on 1stDibs

Surely you’ll find the exact 5 carat diamond engagement you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using Gold, 18k Gold and Platinum. You can easily find a 9896 antique edition and 12960 modern creations to choose from as well. Making the right choice when shopping for a 5 carat diamond engagement may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 18th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. As it relates to this specific piece, our collection includes designs that are universally popular, but .5 Carat and 1 Carat carat weights, specifically, are sought with frequency. Finding an appealing 5 carat diamond engagement — no matter the origin — is easy, but Antinori Fine Jewels, Tiffany & Co. and Roman Malakov each produced a popular version that is worth a look. See these pages for a round cut iteration of this accessory, while there are also oval cut cut and old european cut cut versions available here, too. When shopping for a 5 carat diamond engagement, you’ll find that there are less available pieces for unisex or men today than there are for women.

How Much is a 5 Carat Diamond Engagement?

The price for a 5 carat diamond engagement starts at $19 and tops out at $475,940,000 with these rings, on average, selling for $9,013.

Finding the Right Rings for You

Antique and vintage rings have long held a special place in the hearts of fine jewelry lovers all over the world.

No matter their origin or specific characteristics, rings are timeless, versatile accessories. They’ve carried deep meaning since at least the Middle Ages, when diamond rings symbolized strength and other kinds of rings were worn to signify romantic feelings or to denote an affiliation with a religious order. Rings have also forever been emblematic of eternity.

Over time, rings have frequently taken the form of serpents, which have long been associated with eternal life, health and renewal. Italian luxury jewelry house Bulgari has become famous for its widely loved Serpenti motif, for example, and its Serpenti ring, like the other accessories in the collection, began as an homage to jewelry of the Roman and Hellenistic eras. The serpent is now a popular motif in fine jewelry. Jewelry devotees have long pined for rings adorned with reptiles, thanks to antique Victorian rings — well, specifically, Queen Victoria’s illustrious engagement ring, which took the form of a gold snake set with rubies, diamonds and an emerald (her birthstone). Designs for Victorian-era engagement rings often featured repoussé work and chasing, in which patterns are hammered into the metal.

Engagement rings, which are reliably intimidating to shop for, are still widely recognized as symbols of love and commitment. On 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

The most collectible antique engagement rings and vintage engagement rings are those from the Victorian, Edwardian and Art Deco eras. Named for the monarchies of the four King Georges, who in succession ruled England starting in 1714 (plus King William’s reign), antique Georgian rings, be they engagement rings or otherwise, are also coveted by collectors. Pearls, along with colored gemstones like garnets, rubies and sapphires, were widely used in Georgian jewelry. The late-1700s paste jewelry was a predecessor to what we now call fashion or costume jewelry

The Art Nouveau movement (1880–1910) brought with it rings inspired by the natural world. Antique Art Nouveau rings might feature depictions of winged insects and fauna as well as women, who were simultaneously eroticized and romanticized, frequently with long flowing hair. Art Deco jewelry, on the other hand, which originated during the 1920s and ’30s, is by and large “white jewelry.” White metals, primarily platinum, were favored over yellow gold in the design of antique Art Deco rings and other accessories as well as geometric motifs, with women drawn to the era’s dazzling cocktail rings in particular.

Whether you’re hunting down a chunky classic for a Prohibition-themed cocktail party or seeking a clean contemporary design to complement your casual ensemble, find an exquisite collection of antique, new and vintage rings on 1stDibs.

Questions About 5 Carat Diamond Engagement
  • 1stDibs ExpertSeptember 28, 2021
    A 5-carat diamond’s worth varies depending on the 4Cs of diamond quality – color, cut, clarity and carat. On average, a 5-carat diamond could cost you between $9,600 to $67,500. It is also likely that the price range per carat will be even broader. On 1stDibs, you can find a variety of 5-carat diamond jewelry.