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1989 Halo Ring natural 0.75ct Sapphire 0.24ctw Diamonds 18K Gold ØUS6 / 2.4gr
1989 Halo Ring natural 0.75ct Sapphire 0.24ctw Diamonds 18K Gold ØUS6 / 2.4gr

1989 Halo Ring natural 0.75ct Sapphire 0.24ctw Diamonds 18K Gold ØUS6 / 2.4gr

Located in SE

Floret / crown measures 10.5 mm x 9.5 mm x 6.7 mm deep. Natural Blue Sapphire oval diamond cut measures 5.5 mm x 4mm x 2.1 mm deep / ca. 0.75 ct.

Category

Vintage 1980s Swedish Retro Cluster Rings

Materials

Diamond, Sapphire, 18k Gold, Yellow Gold

Antique Victorian 18K Yellow Gold Multi-Gem Cluster Ring Diamonds Rubis Emeralds
Antique Victorian 18K Yellow Gold Multi-Gem Cluster Ring Diamonds Rubis Emeralds

Antique Victorian 18K Yellow Gold Multi-Gem Cluster Ring Diamonds Rubis Emeralds

Located in MONTMORENCY, FR

A stunning example of late Victorian jewelry design, this 18K yellow gold (750‰) navette-shaped cluster ring showcases a handcrafted rose-cut diamond at its heart (approx. 0.25 ct), ...

Category

Antique Late 19th Century French Victorian Cluster Rings

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold, Yellow Gold

Van Cleef & Arpels Sapphire Diamond 18 Karat Yellow Gold Forget-Me-Not Brooch
Van Cleef & Arpels Sapphire Diamond 18 Karat Yellow Gold Forget-Me-Not Brooch

Van Cleef & Arpels Sapphire Diamond 18 Karat Yellow Gold Forget-Me-Not Brooch

By Van Cleef & Arpels

Located in London, GB

A Van Cleef and Arpels sapphire and diamond 18 karat yellow gold Forget-Me-Not brooch, circa 1950 This exceptional forget-me-not brooch by Van Cleef & Arpels is designed as a bouque...

Category

Vintage 1940s French Retro Brooches

Materials

Diamond, Sapphire, Gold, 18k Gold, Yellow Gold

14K Yellow Gold 3 Strand Pearl Necklace with a Diamond, Ruby and Sapphire Clasp
14K Yellow Gold 3 Strand Pearl Necklace with a Diamond, Ruby and Sapphire Clasp

14K Yellow Gold 3 Strand Pearl Necklace with a Diamond, Ruby and Sapphire Clasp

Located in Philadelphia, PA

This three-strand pearl necklace, composed of lustrous white pearls, is elegantly fastened by a prominent 14 karat yellow gold clasp featuring vibrant rubies, deep blue sapphires, an...

Category

21st Century and Contemporary More Necklaces

Materials

Diamond, Ruby, Pearl, Sapphire, Gold, Yellow Gold, 14k Gold

Nigaam Serpent 1.01 Ctw Sapphire & Diamond Ring Size 7 in 18K White Gold
Nigaam Serpent 1.01 Ctw Sapphire & Diamond Ring Size 7 in 18K White Gold

Nigaam Serpent 1.01 Ctw Sapphire & Diamond Ring Size 7 in 18K White Gold

Located in New York, NY

This ring features a unique coil design, adorned with a mesmerizing combination of deep blue sapphires and sparkling diamonds. The head of the ring showcases a dome of vibrant sapph...

Category

2010s Contemporary Band Rings

Materials

Diamond, Sapphire, 18k Gold, Rhodium

Art Deco Platinum Moi et Toi Diamond Sapphire East West Ring, Circa 1920
Art Deco Platinum Moi et Toi Diamond Sapphire East West Ring, Circa 1920

Art Deco Platinum Moi et Toi Diamond Sapphire East West Ring, Circa 1920

Located in New York, NY

Jackie Kennedy had one and Napoleon proposed with one to Josephine. Diamond: J-K, VS, Kite cut, approximately 1.30 carats Sapphire: Kite cut, approximately 1.60 carats, deep velvety ...

Category

Early 20th Century Art Deco Engagement Rings

Materials

Diamond, Sapphire, Platinum

4 Carat Diamond and Sapphire Engagement Ring. Cushion Halo Platinum Ring J VS2
4 Carat Diamond and Sapphire Engagement Ring. Cushion Halo Platinum Ring J VS2

4 Carat Diamond and Sapphire Engagement Ring. Cushion Halo Platinum Ring J VS2

Located in New York, NY

Era: Handcrafted Vintage-Style Material: Platinum The ring can be resized to any finger size at no extra cost, This exceptional antique engagement ring centers a remarkable 4.00 car...

Category

21st Century and Contemporary Unknown Art Deco Engagement Rings

Materials

Sapphire, Diamond, Platinum

Vintage 18K Yellow Gold and Sapphire Ring. 0.80ct Carre 0.90ct Round Diamond
Vintage 18K Yellow Gold and Sapphire Ring. 0.80ct Carre 0.90ct Round Diamond

Vintage 18K Yellow Gold and Sapphire Ring. 0.80ct Carre 0.90ct Round Diamond

Located in New York, NY

The contrast between the deep blue sapphires and brilliant diamonds creates a dynamic composition while maintaining the ring's streamlined character.

Category

Vintage 1970s Unknown Art Deco Cocktail Rings

Materials

Sapphire, Diamond, 18k Gold, Yellow Gold, Gold

18K White Gold 3.71ct Ceylon Sapphire & Diamond Necklace GIA Certified Gemstone
18K White Gold 3.71ct Ceylon Sapphire & Diamond Necklace GIA Certified Gemstone

18K White Gold 3.71ct Ceylon Sapphire & Diamond Necklace GIA Certified Gemstone

By DeKaraDesign

Located in Los Angeles, CA

The combination of the deep blue sapphire, bright diamonds, and polished white gold creates a timeless look that can easily be worn for an evening occasion or as an elegant everyday ...

Category

21st Century and Contemporary Pendant Necklaces

Vintage Diamond and Cabochon Sapphire Spray Brooch in 18 Karat Gold and Enamel
Vintage Diamond and Cabochon Sapphire Spray Brooch in 18 Karat Gold and Enamel

Vintage Diamond and Cabochon Sapphire Spray Brooch in 18 Karat Gold and Enamel

Located in Scottsdale, AZ

The vibrant green enamel accents create a striking contrast against the shimmering diamonds and deep blue sapphires, enhancing the overall allure of the piece.

Category

20th Century French Contemporary Brooches

Materials

Sapphire, Diamond, Enamel, White Gold, Yellow Gold, 18k Gold, Gold

2.50 carat sapphire 0.80 carat natural diamonds statement ing
2.50 carat sapphire 0.80 carat natural diamonds statement ing

2.50 carat sapphire 0.80 carat natural diamonds statement ing

Located in Ramat Gan, IL

This stunning combination of deep blue sapphire and sparkling white diamonds is fit for the hand of a princess.

Category

2010s Israeli Art Deco Cocktail Rings

Materials

14k Gold, White Gold

Antique French Snake Bracelet
Antique French Snake Bracelet

Antique French Snake Bracelet

Located in New York, NY

Spectacular snake bracelet, handmade flexible body and a head set with a deep blue sapphire, rose cut diamonds, ruby eyes. in good vintage condition, this snake bracelet was the hei...

Category

Antique Late 19th Century French Anklets

Materials

Diamond, Ruby, Blue Sapphire, 18k Gold

4.49 Carat Natural Ceylon Aquamarine Pendant in 14k White Gold
4.49 Carat Natural Ceylon Aquamarine Pendant in 14k White Gold

4.49 Carat Natural Ceylon Aquamarine Pendant in 14k White Gold

Located in Jersey City, NJ

Enhancing its tranquil radiance is a rich tapestry of accent gemstones vibrant green natural tsavorites, deep blue sapphires, and brilliant diamonds creating a striking, nature-inspi...

Category

2010s Sri Lankan Pendant Necklaces

Materials

Aquamarine, Diamond, Blue Sapphire, Tsavorite, 14k Gold

【Vine Symphony】Celestial Blossom Convertible South Sea Pearl Earrings
【Vine Symphony】Celestial Blossom Convertible South Sea Pearl Earrings

【Vine Symphony】Celestial Blossom Convertible South Sea Pearl Earrings

By The Pearl Vogue

Located in New York, NY

Inspired by the brilliance of blooming florals, these elegant earrings pair deep-blue sapphires and sparkling diamonds in a sculpted flower motif, crafted in warm 18K yellow gold.

Category

21st Century and Contemporary Japanese Drop Earrings

Materials

Diamond, South Sea Pearl, Blue Sapphire, 18k Gold

USA Flag Customized Bag Bijoux
USA Flag Customized Bag Bijoux

USA Flag Customized Bag Bijoux

By Ashna Mehta

Located in Dubai, AE

The USA Flag Bag Bijoux reimagines the American flag as a wearable jewel, rendered in luxurious 18K gold and brought to life with natural FG/VVS-VS diamonds, deep blue sapphires, and...

Category

2010s Emirian Brooches

Materials

Diamond, Ruby, Blue Sapphire, 18k Gold, White Gold

Vintage OGI Ltd 2.23ct GIA Certified Burma Sapphire Ring in Platinum
Vintage OGI Ltd 2.23ct GIA Certified Burma Sapphire Ring in Platinum

Vintage OGI Ltd 2.23ct GIA Certified Burma Sapphire Ring in Platinum

By OGI Ltd

Located in New York, NY

Main Features: Center Stone: Type: GIA Certified No Heat Sapphire Shape: Cabochon Round Weight: 2.23 Carats Color: Deep, Rich Blue Accent Stones: Diamonds: Total Weight: 0.15 Carats ...

Category

20th Century American Art Deco Cocktail Rings

Materials

Diamond, Sapphire, Platinum

14K White Gold Diamod Tanzanite Opal Filigree Ring
14K White Gold Diamod Tanzanite Opal Filigree Ring

14K White Gold Diamod Tanzanite Opal Filigree Ring

Located in Hallandale Beach, FL

Key Features & Specs: Material: 14K White Gold Gemstones: 1 Oval Opal (8 mm x 6 mm) vibrant centerpiece 6 Oval Tanzanites rich deep blue accents 6 Brilliant Round Diamonds sparkling ...

Category

20th Century Engagement Rings

Materials

Diamond, Opal, Tanzanite, 14k Gold, White Gold

Vintage 1970s "Big Three" Flower Vine Brooch in 18k Gold
Vintage 1970s "Big Three" Flower Vine Brooch in 18k Gold

Vintage 1970s "Big Three" Flower Vine Brooch in 18k Gold

Located in Greenwich, CT

The contrast of bright pavé diamond flowers, deep blue sapphire centers, and green emerald foliage turn the piece into a full, three-dimensional naturalistic real life flower.

Category

Vintage 1970s Brooches

Materials

Diamond, Emerald, Ruby, Sapphire, 18k Gold

Vintage Retro Cabochon Lapis Lazuli 18K Gold Clip-On Earrings and Ring Set
Vintage Retro Cabochon Lapis Lazuli 18K Gold Clip-On Earrings and Ring Set

Vintage Retro Cabochon Lapis Lazuli 18K Gold Clip-On Earrings and Ring Set

Located in Miami, FL

Vintage 18K Yellow Gold Cabochon-Cut Rich Deep Blue Lapis Lazuli with Round Cut Diamonds Earring and Ring Set.

Category

Vintage 1950s Retro Cocktail Rings

Materials

Diamond, White Diamond, Lapis Lazuli, Gold, 18k Gold, Yellow Gold

Sybarite Bull Finch Ring
Sybarite Bull Finch Ring

Sybarite Bull Finch Ring

By Sybarite Jewellery

Located in London, GB

Each bird is adorned with radiant pink sapphires, deep blue sapphires, and black diamonds, creating a stunning interplay of colors.

Category

21st Century and Contemporary British Contemporary Cocktail Rings

Materials

White Diamond, Black Diamond, Ruby, Sapphire, 18k Gold

Citrine Emerald Sapphire Art Deco Statement Ring in 18K Yellow Gold
Citrine Emerald Sapphire Art Deco Statement Ring in 18K Yellow Gold

Citrine Emerald Sapphire Art Deco Statement Ring in 18K Yellow Gold

Located in Bangkok, TH

This citrine statement ring features a emerald cut citrine surrounded by emeralds and deep blue sapphires, with diamond accents adding subtle sparkle.

Category

21st Century and Contemporary Thai Art Deco Cocktail Rings

Materials

Citrine, Diamond, Emerald, Sapphire, Gold, Yellow Gold, 18k Gold

Tri-Stone Morganite 14K (or 18k upon request) Rose Gold Statement Ring
Tri-Stone Morganite 14K (or 18k upon request) Rose Gold Statement Ring

Tri-Stone Morganite 14K (or 18k upon request) Rose Gold Statement Ring

Located in Los Angeles, CA

A masterpiece of elegance and craftsmanship, this Blue Sapphire & Diamond Eternity Band radiates regal beauty with its seamless blend of deep blue sapphires and brilliant white d...

Category

2010s American Modern Fashion Rings

Materials

Morganite, 14k Gold, Rose Gold, White Gold, Yellow Gold, Platinum

Single-Stone Turquoise Cuff Bracelet
Single-Stone Turquoise Cuff Bracelet

Single-Stone Turquoise Cuff Bracelet

Located in Coeur d Alene, ID

Single-stone turquoise and sterling silver cuff bracelet. Single deep green Blue Diamond stone with beautiful light coloration and silver matrix in sawtooth bezel setting.

Category

Late 20th Century American Cuff Bracelets

Materials

Turquoise, Sterling Silver

An early 20th century diamond and sapphire cluster ring
An early 20th century diamond and sapphire cluster ring

An early 20th century diamond and sapphire cluster ring

Located in London, GB

The union of warm yellow gold mount and platinum millegrain setting graciously complement each other, representing a gentle nod to the past Victorian jewellery, but at the same time ...

Category

Early 20th Century English Modern Cluster Rings

Materials

18k Gold, Yellow Gold, Platinum

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Deep Blue Diamond For Sale on 1stDibs

On 1stDibs, you can find the most appropriate deep blue diamond for your needs in our varied inventory. Frequently made of gold, white gold and 18k gold, this item was constructed with great care. Find an antique version now, or shop for 412 vintage or 493 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a deep blue diamond 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. Creating a deep blue diamond has been a part of the legacy of many jewelers, but those produced by Le Vian, VR Jewels and Gems and Jewels UK are consistently popular. While most can agree that any deep blue diamond from our collection can easily elevate most outfits, but the choice of a diamond version from the 688 available is guaranteed to add a special touch to your ensemble. An oval cut version of this piece has appeal, but there are also round cut and brilliant cut versions for sale. Most of our deep blue diamond for sale are for women, but there are 249 pieces available to browse for men.

How Much is a Deep Blue Diamond?

Prices for a deep blue diamond can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1 and can go as high as $11,800,000, while this accessory, on average, fetches $4,344.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement rings, vintage engagement rings or Art Deco engagement rings. 

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.  

Questions About Deep Blue Diamond

  • 1stDibs ExpertAugust 17, 2021
    Yes, a blue diamond is a real diamond. Contrary to popular belief, diamonds come in an array of colors aside from clear. Blue diamonds are neither color-treated nor enhanced to deliver the icy shade, which can range from a seafoam green to a royal blue.
  • 1stDibs ExpertApril 5, 2022
    Yes, there are blue-green diamonds. However, natural ones are very rare, so most are man-made. The Dresden Green is the most famous example of a genuine blue-green diamond gemstone. You can find a wide selection of diamond gemstone jewelry on 1stDibs.
  • 1stDibs ExpertFebruary 22, 2021
    A light blue 0.5 carat diamond is worth roughly $26,280 on average. A deep blue 0.25 diamond, costs $75,000 on average. Blue diamonds are the rarest color of diamond, only found in three areas of the world: Australia, South Africa, and India. The deeper the blue diamonds are even more rare and therefore more expensive.
  • 1stDibs ExpertAugust 26, 2024
    Yes, Blue Nile diamonds are real diamonds. The luxury jewelry maker uses natural diamonds ethically sourced from mines for many of its pieces. In addition, Blue Nile offers an assortment of lab-created diamond rings, earrings, necklaces and bracelets. Lab-created diamonds are still real, but they are human-made rather than mined. On 1stDibs, find an assortment of Blue Nile diamond jewelry.
  • 1stDibs ExpertSeptember 16, 2024
    Yes, blue diamonds may be worth something. How much a particular gemstone is worth depends on its color, cut, clarity and size, measured in carats. Generally, naturally occurring blue diamonds are worth more than human-made synthetic ones. A certified appraiser or knowledgeable jeweler can inspect your loose gemstone or diamond jewelry and provide you with its estimated value. Explore a diverse assortment of blue diamond jewelry on 1stDibs.
  • 1stDibs ExpertApril 22, 2024
    Yes, Blue Nile diamonds are legit. The jewelry maker offers both natural diamonds sourced from mines and lab-created diamonds produced via controlled scientific techniques. Both types of diamonds are legitimate or genuine gemstones. Find a range of Blue Nile diamond jewelry on 1stDibs.
  • 1stDibs ExpertAugust 29, 2024
    To tell if your blue diamond is real, look for a maker's mark on your piece. By researching the manufacturer using trusted online resources, you can find out if the jewelry maker tends to use authentic gemstones or rhinestones in its pieces. If you can't find a mark or are still uncertain, consult a certified appraiser or knowledgeable jeweler. Performing home tests for diamond authenticity can damage your jewelry, so getting a professional opinion is often the best way to protect your piece. Find a range of blue diamond jewelry on 1stDibs.
  • 1stDibs ExpertOctober 5, 2021
    A blue diamond ring worth depends on the type of blue diamond. Ideally, a blue diamond’s cost is based on its 4Cs (cut, color, clarity, and carat), with the intensity of the color being the dominant factor. A blue diamond ring price ranges between $6,800 to $11,200. On 1stDibs, you can find a range of exquisite antique and vintage blue diamond rings.
  • 1stDibs ExpertMay 30, 2024
    Yes, Blue Nile sells real diamonds. Many of the jewelry maker's pieces feature natural diamonds. Others are set with lab-created diamonds, which are real but are the result of processes performed in laboratories. On 1stDibs, explore a collection of Blue Nile diamond jewelry from some of the world's top sellers.
  • 1stDibs ExpertOctober 5, 2021
    The price of a natural blue diamond is determined first by the color and then its clarity. Depending on these factors and the size chosen, there is a huge variation in price. You will find the blue diamond price range from under $2,000 to over $10,000 on 1stDibs.
  • 1stDibs ExpertSeptember 16, 2024
    How much a 1-carat blue diamond is worth depends on its cut, clarity and color. Human-made synthetic blue diamonds of that size are often worth less than $10,000, while natural examples sourced through mining are generally valued at much higher prices. If a gemstone is set in a piece of jewelry, it may have additional value due to the precious metals, the maker of the piece, its age and other factors. Because so many variables can impact the potential value of a blue diamond, experts generally recommend having a certified appraiser or experienced jeweler assist with the valuation process. On 1stDibs, explore a diverse assortment of blue diamond jewelry.