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Diamond Quadrillion

Quadrillion Invisibly Set Diamond 1.36Ct & Ruby 4.31Ct Ring
Quadrillion Invisibly Set Diamond 1.36Ct & Ruby 4.31Ct Ring

Quadrillion Invisibly Set Diamond 1.36Ct & Ruby 4.31Ct Ring

By Bez Ambar

Located in New York, NY

Under the trademark Quadrillion, Bez Ambar created the modern square shaped princess cut diamond.

Category

1990s American Contemporary Engagement Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Quadrillion Ambar Wrist Watch 8.71cttw Diamond MSRP $56, 000 Serial Number 1
Quadrillion Ambar Wrist Watch 8.71cttw Diamond MSRP $56, 000 Serial Number 1

Quadrillion Ambar Wrist Watch 8.71cttw Diamond MSRP $56, 000 Serial Number 1

By Bez Ambar

Located in Dearborn, MI

Quadrillion Ambar Wrist Watch 8.71cttw Diamond MSRP $56,000 Serial Number 1 Features 8.71cttw of Genuine Natural Mined D-E / Flawless-VVS Diamonds MSRP $56,000 The Genius of Be...

Category

Vintage 1980s Retro Wrist Watches

Materials

Diamond, 18k Gold, Yellow Gold

Bez Ambar 18K 2.41ct GIA Asscher Quadrillion Diamond Vivid Ruby Ring 8.91ctw
Bez Ambar 18K 2.41ct GIA Asscher Quadrillion Diamond Vivid Ruby Ring 8.91ctw

Bez Ambar 18K 2.41ct GIA Asscher Quadrillion Diamond Vivid Ruby Ring 8.91ctw

By Bez Ambar

Located in Winter Springs, FL

Bez Ambar is celebrated for his patented Quadrillion cut and highly precise diamond work, and this ring beautifully reflects that level of craftsmanship.

Category

Late 20th Century Contemporary Cocktail Rings

Materials

Diamond, Ruby, 18k Gold, Yellow Gold

Ambar Quadrillion Two Row Diamond 18k Yellow Gold Band Ring Size 7.75
Ambar Quadrillion Two Row Diamond 18k Yellow Gold Band Ring Size 7.75

Ambar Quadrillion Two Row Diamond 18k Yellow Gold Band Ring Size 7.75

By Bez Ambar

Located in South Pasadena, CA

Ambar Quadrillion Two Row Diamond 18k Yellow Gold Band Ring.

Category

21st Century and Contemporary American Contemporary Band Rings

Materials

Diamond, 18k Gold, Yellow Gold

Recent Sales

18 Karat Ruby and Diamond Mounting Ring
18 Karat Ruby and Diamond Mounting Ring

18 Karat Ruby and Diamond Mounting Ring

By Quadrillion Diamond Company

Located in Pikesville, MD

Made with superior quality by invisibly set fine jewelry designer, Quadrillion diamond company. This stunning 18 karat yellow gold mounting features 3.67 carats of high quality, well...

Category

1990s American Modern Bridal Rings

Materials

White Diamond, Ruby, 18k Gold, Yellow Gold

18 Karat Wide Blue Sapphire and Diamond Modern Band
18 Karat Wide Blue Sapphire and Diamond Modern Band

18 Karat Wide Blue Sapphire and Diamond Modern Band

By Quadrillion Diamond Company

Located in Pikesville, MD

Made by Quadrillion Diamond Company, experts in invisibly set creations, this 18 karat yellow gold ring features 2.39 carats of well saturation blue sapphires and .75 carats of brigh...

Category

Early 2000s American Modern Fashion Rings

Materials

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

18 Karat Art Deco Inspired Diamond Ring 5.47 Carat Total Weight
18 Karat Art Deco Inspired Diamond Ring 5.47 Carat Total Weight

18 Karat Art Deco Inspired Diamond Ring 5.47 Carat Total Weight

By Quadrillion Diamond Company

Located in Pikesville, MD

Beautifully refined 18 karat yellow gold Art Deco inspired geometric diamond ring featuring a 1.01 carat princess cut center surrounded by 4.46 carats of trillion and princess cut di...

Category

1990s American Art Deco Fashion Rings

Materials

White Diamond, 18k Gold, Yellow Gold

Quadrillion 18k Gold Emerald Cut Diamond Solitaire & Princess Pyramid Sides Ring
Quadrillion 18k Gold Emerald Cut Diamond Solitaire & Princess Pyramid Sides Ring

Quadrillion 18k Gold Emerald Cut Diamond Solitaire & Princess Pyramid Sides Ring

By Quadrillion Diamond Company

Located in Montclair, NJ

This stunning and uniquely designed diamond ring is designed by Quadrillion and crafted in solid 18k yellow gold.

Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Emerald, 18k Gold, Yellow Gold

Quadrillion 18k Yellow Gold 1.84cwt Channel Set Diamond Wedding Band Ring
Quadrillion 18k Yellow Gold 1.84cwt Channel Set Diamond Wedding Band Ring

Quadrillion 18k Yellow Gold 1.84cwt Channel Set Diamond Wedding Band Ring

By Quadrillion Diamond Company

Located in Montclair, NJ

--Stone(s):-- (23) Natural Genuine Diamonds - Square Cut w/ Cut Corners- Channel Set - E/F Color - VVS1-VS2 Clarity Total Carat Weight: 1.84 (approx.) Material: Solid 18k Yellow Gol...

Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Gold, 18k Gold, White Gold, Yellow Gold

18 Karat Yellow Gold Cultured Pearl Diamond Ring
18 Karat Yellow Gold Cultured Pearl Diamond Ring

18 Karat Yellow Gold Cultured Pearl Diamond Ring

By Quadrillion Diamond Company

Located in Coral Gables, FL

The Mounting Contains 15 Princess Cut Diamonds Totaling Approximately 1.5 Carats of VVS Clarity & F Color.

Category

Vintage 1980s Solitaire Rings

Materials

Diamond, Cultured Pearl, 18k Gold, Yellow Gold

DeBeers Award Winner 4.50 ctw Quadrillion Cut Diamond Engagement Ring
DeBeers Award Winner 4.50 ctw Quadrillion Cut Diamond Engagement Ring

DeBeers Award Winner 4.50 ctw Quadrillion Cut Diamond Engagement Ring

By Bez Ambar

Located in Santa Barbara, CA

The Quadrillion diamond is a square brilliant gemstone.

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Vintage 1980s Contemporary Wedding Rings

Materials

Diamond, Gold, 18k Gold, Yellow Gold

Quadrillion Look Diamond Engagement Ring Mined 2.35ct Princess 14K Yellow Gold
Quadrillion Look Diamond Engagement Ring Mined 2.35ct Princess 14K Yellow Gold

Quadrillion Look Diamond Engagement Ring Mined 2.35ct Princess 14K Yellow Gold

Located in Dearborn, MI

Quadrillion Look Diamond Engagement Ring Mined 2.35ct Princess 14K Yellow Gold Features a Genuine H SI Natural Princess Cut Center Diamond Crown Quad Style Engagement Ring Captiv...

Category

2010s Engagement Rings

Materials

Diamond, 14k Gold, Yellow Gold

Natural Blue Star Sapphire Diamond Brooch, Diamonds 11.75 Carats
Natural Blue Star Sapphire Diamond Brooch, Diamonds 11.75 Carats

Natural Blue Star Sapphire Diamond Brooch, Diamonds 11.75 Carats

Located in Palm Desert, CA

Eighteen channel set quadrillion cut diamonds, 1.00 carat, VS-1 to S-1 in clarity, G-H in color.

Category

Vintage 1940s American Brooches

Materials

Diamond, Star Sapphire, 18k Gold, White Gold

GIA Certified VS2 4.13 Carat Princess Diamond Ring With 2 Carat Diamond Sides
GIA Certified VS2 4.13 Carat Princess Diamond Ring With 2 Carat Diamond Sides

GIA Certified VS2 4.13 Carat Princess Diamond Ring With 2 Carat Diamond Sides

Located in Tustin, CA

Stunning platinum 3 stone diamond estate engagement, wedding or cocktail ring features a GIA certified, "Quadrillion" princess cut diamond in the center weighing 4.13 carats, with a ...

Category

21st Century and Contemporary Unknown Contemporary Engagement Rings

Materials

White Diamond, Diamond, Platinum

Tiffany & Co. Ruby and Diamond Bangle
Tiffany & Co. Ruby and Diamond Bangle

Tiffany & Co. Ruby and Diamond Bangle

By Tiffany & Co.

Located in Beverly Hills, CA

This exquisite Tiffany and Company ruby and diamond bangle bracelet is the perfect everyday bangle. 16 Rubies adorn the top weighing 1.74cts and 12 quadrillion diamonds are set in-be...

Category

Late 20th Century American Retro Bangles

Materials

Diamond, White Diamond, Ruby, Gold, 18k Gold, Yellow Gold

Tiffany & Co Diamond Ruby Yellow Gold Line Tennis Bracelet
Tiffany & Co Diamond Ruby Yellow Gold Line Tennis Bracelet

Tiffany & Co Diamond Ruby Yellow Gold Line Tennis Bracelet

By Tiffany & Co.

Located in Southampton, PA

With 40 quadrillion cut diamonds VS1 clarity, G color total weight 2.85ct 40 square cut rubies total weight approximately 3.66ct Details: Length: 7" Weight: 19.7 grams Width: 4mm S...

Category

1990s American Tennis Bracelets

Materials

Diamond, Ruby, Yellow Gold

Black, Starr & Frost GIA Certified Natural Fancy Pink Oval Diamond Ring 2.30ctw
Black, Starr & Frost GIA Certified Natural Fancy Pink Oval Diamond Ring 2.30ctw

Black, Starr & Frost GIA Certified Natural Fancy Pink Oval Diamond Ring 2.30ctw

By Black, Starr & Frost

Located in Newport Beach, CA

We are pleased to offer this Black, Starr & Frost GIA Certified Natural Fancy Pink Oval Diamond Ring 2.30ctw. This beautiful custom Black, Starr & Frost ring features a GIA certified...

Category

1990s American Modern Engagement Rings

Materials

White Diamond, Pink Diamond, Platinum

Bez Ambar 2.00 Carat Quad Diamond Earrings in 18 Karat Yellow Gold
Bez Ambar 2.00 Carat Quad Diamond Earrings in 18 Karat Yellow Gold

Bez Ambar 2.00 Carat Quad Diamond Earrings in 18 Karat Yellow Gold

By Bez Ambar

Located in Carmel, IN

They are square shaped with baguette & quadrillion cut diamonds, totaling 2.00 carats. It is crafted in 18k yellow gold with high-quality quad cut diamonds.

Category

2010s American Art Deco Stud Earrings

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

Quadrillion Brand 18 Yellow Gold Ring with 10.82ct Precious Topaz and Diamonds
Quadrillion Brand 18 Yellow Gold Ring with 10.82ct Precious Topaz and Diamonds

Quadrillion Brand 18 Yellow Gold Ring with 10.82ct Precious Topaz and Diamonds

By Quadrillion Diamond Company

Located in Palm Beach, FL

This 18k yellow gold fashion ring is a late 20th century industry icon, signed Quadrillion brand. Set with one 10.82ct oval Imperial Topaz* flanked by twenty quadrillion cut diamond...

Category

Late 20th Century American Modern Cocktail Rings

Materials

Diamond, Topaz, 18k Gold, Yellow Gold

Quadrillion 18kt Yellow Gold 1.19ct Diamond Heart Pendant Necklace
Quadrillion 18kt Yellow Gold 1.19ct Diamond Heart Pendant Necklace

Quadrillion 18kt Yellow Gold 1.19ct Diamond Heart Pendant Necklace

By Bez Ambar

Located in New York, NY

Under the trademark Quadrillion, Bez Ambar created the modern square shaped princess cut diamond.

Category

1990s American Contemporary Pendant Necklaces

Materials

Diamond, 18k Gold, Yellow Gold

Tiffany & Co. 18 Karat Yellow Gold 12.30 Carat Quadrillion Diamond Line Bracelet
Tiffany & Co. 18 Karat Yellow Gold 12.30 Carat Quadrillion Diamond Line Bracelet

Tiffany & Co. 18 Karat Yellow Gold 12.30 Carat Quadrillion Diamond Line Bracelet

By Bez Ambar

Located in New York, NY

Under the trademark Quadrillion, Bez Ambar created the modern square shaped princess cut diamond.

Category

1990s American Contemporary Tennis Bracelets

Materials

Diamond, 18k Gold, Yellow Gold

Huge 11.11 Carat Princess Diamond Ring With 2.08 Carat Diamond Side Stones
Huge 11.11 Carat Princess Diamond Ring With 2.08 Carat Diamond Side Stones

Huge 11.11 Carat Princess Diamond Ring With 2.08 Carat Diamond Side Stones

Located in Tustin, CA

The "Quadrillion" Princess cut diamond is an ideal square shaped diamond with brilliant facets.

Category

21st Century and Contemporary Unknown Contemporary Three-Stone Rings

Materials

Diamond, White Diamond, 14k Gold, White Gold

Emerald-Cut Sapphire and Rare Quadrillion-Cut Diamonds Gold Ring
Emerald-Cut Sapphire and Rare Quadrillion-Cut Diamonds Gold Ring

Emerald-Cut Sapphire and Rare Quadrillion-Cut Diamonds Gold Ring

Located in Metairie, LA

Surrounding this deep blue sapphire are approximately 5 carats of beautiful Quadrillion cut diamonds. The very rare and sought after Quadrillion cut diamond is an ideal-cut diamond w...

Category

Late 20th Century Cocktail Rings

Materials

Diamond, Sapphire

Bez Ambar Quadrillion Cut White Gold 11.88 Carat Diamond Bracelet
Bez Ambar Quadrillion Cut White Gold 11.88 Carat Diamond Bracelet

Bez Ambar Quadrillion Cut White Gold 11.88 Carat Diamond Bracelet

By Bez Ambar

Located in Columbia, MO

Bez Ambar is a Los Angeles-based jewelry designer known for its classic designs. This stunning tennis bracelet features 11.88 carats of sparkling diamonds. DETAILS: 11.88CTW princes...

Category

21st Century and Contemporary Tennis Bracelets

Materials

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

18 Karat White Gold and Diamond Hanging Earrings
18 Karat White Gold and Diamond Hanging Earrings

18 Karat White Gold and Diamond Hanging Earrings

Located in New York, NY

A pair of 18 karat white gold earrings featuring princess cut and quadrillion cut diamonds. Total estimated diamond weight of 12.66 carats.

Category

21st Century and Contemporary Contemporary Dangle Earrings

Materials

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Bez Ambar Quadrillion Princess Cut Diamond Platinum Tennis Bracelet
Bez Ambar Quadrillion Princess Cut Diamond Platinum Tennis Bracelet

Bez Ambar Quadrillion Princess Cut Diamond Platinum Tennis Bracelet

By Bez Ambar

Located in Columbia, MO

It features Bez Ambar's signature Quadrillion princess cut diamonds that have a combined total weight of 3.92 carats.

Category

21st Century and Contemporary Tennis Bracelets

Materials

Diamond, White Diamond, Platinum

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Cartier wrist watch - A Lady's fine white gold, Ruby, and diamonds-set bracelet watch Circa 1995.

Category

1990s Wrist Watches

Materials

Diamond, Ruby

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Diamond Quadrillion For Sale on 1stDibs

You are likely to find exactly the diamond quadrillion you’re looking for on 1stDibs, as there is a broad range for sale. Each design created in this style — which was crafted with great care and often made from 18k Gold, Gold and Yellow Gold — can elevate any look. Our collection of these items for sale includes 15 vintage editions and 3 modern creations to choose from as well. Making the right choice when shopping for a diamond quadrillion may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. A diamond quadrillion from Bez Ambar and Quadrillion Diamond Company — each of whom created a beautiful version of this treasured accessory — is worth considering. Today, if you’re looking for a princess cut version of this piece and are unable to find the perfect match, our selection also includes alternatives. There aren’t many items for men if you’re seeking a diamond quadrillion, as most of the options available are for women and unisex.

How Much is a Diamond Quadrillion?

Prices for a diamond quadrillion can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $2,500 and can go as high as $63,000, while this accessory, on average, fetches $7,975.

Why Gold Shines in Jewelry Craftsmanship

Gold is the feel-good metal, the serotonin of jewelry. Wear vintage and antique gold necklaces, watches, gold bracelets or gold rings and you feel happy, you feel dressed, you feel, well, yourself. 

Gold, especially yellow gold, with its rich patina and ancient pedigree going back thousands of years, is the steady standby, the well-mannered metal of choice. Any discussion of this lustrous metal comes down to a basic truth: Gold is elementary, my dear. Gold jewelry that couples the mystique of the metal with superb design and craftsmanship achieves the status of an enduring classic. Many luxury houses have given us some of our most treasured and lasting examples of gold jewelry over the years.

Since its founding, in 1837, Tiffany & Co. has built its reputation on its company jewelry as well as its coterie of boutique designers, which has included Jean Schlumberger, Donald Claflin, Angela Cummings and Elsa Peretti. There are numerous gold Tiffany classics worth citing. Some are accented with gemstones, but all stand out for their design and the workmanship displayed.

For the woman who prefers a minimalist look, the Tiffany & Co. twist bangle (thin, slightly ovoid) is stylishly simple. For Cummings devotees, signature pieces feature hard stone inlay, such as her pairs of gold ear clips inlaid with black jade (a play on the classic Chanel black and tan), or bangles whose design recalls ocean waves, with undulating lines of lapis lazuli and mother-of-pearl. And just about any design by the great Jean Schlumberger is by definition a classic.

Even had he eschewed stones and diamonds, Southern-born David Webb would be hailed for the vast arsenal of heavy gold jewelry he designed. Gold, usually hammered or textured in some manner, defines great David Webb jewelry. The self-taught jeweler made very au courant pieces while drawing inspiration from ancient and out-of-the-way sources — East meets West in the commanding gold necklaces made by Webb in the early 1970s. The same could be said for his endlessly varied gold cuffs.

In Europe, many houses have given us gold jewelry that sets the highest standard for excellence, pieces that were highly sought after when they were made and continue to be so. 

Numerous designs from Cartier are homages to gold. There are the classic Trinity rings, necklaces and bracelets — trifectas of yellow, white and rose gold. As a testament to the power of love, consider the endurance of the Cartier Love bracelet.

Aldo Cipullo, Cartier’s top in-house designer from the late 1960s into the early ’70s, made history in 1969 with the Love bracelet. Cipullo frequently said that the Love bracelet was born of a sleepless night contemplating a love affair gone wrong and his realization that “the only remnants he possessed of the romance were memories.” He distilled the urge to keep a loved one close into a slim 18-karat gold bangle. 

BVLGARI and its coin jewelry, gemme nummarie, hit the jackpot when the line launched in the 1960s. The line has been perennially popular. BVLGARI coin jewelry features ancient Greek and Roman coins embedded in striking gold mounts, usually hung on thick link necklaces of varying lengths. In the 1970s, BVLGARI introduced the Tubogas line, most often made in yellow gold. The Tubogas watches are classics, and then there is the Serpenti, the house's outstanding snake-themed watches and bracelets.

A collection called Monete that incorporated the gold coins is one of several iconic BVLGARI lines that debuted in the 1970s and ’80s, catering to a new generation of empowered women. Just as designers like Halston and Yves Saint Laurent were popularizing fuss-free ready-to-wear fashion for women on the go, BVLGARI offered jewels to be lived in. 

Since Van Cleef & Arpels opened its Place Vendôme doors in 1906, collection after collection of jewelry classics have enchanted the public. As predominantly expressed in a honeycomb of gold, there is the Ludo watch and accessories, circa the 1920s, and the golden Zip necklace, 1951, whose ingenious transformation of the traditional zipper was originally proposed by the Duchess of Windsor. Van Cleef's Alhambra, with its Moroccan motif, was introduced in 1968 and from the start its popularity pivoted on royalty and celebrity status. It remains one of VCA’s most popular and collected styles.

Mention must be made of Buccellati, whose name is synonymous with gold so finely spun that it suggests tapestry. The house’s many gold bracelets, typically embellished with a few or many diamonds, signified taste and distinction and are always in favor on the secondary market. Other important mid-20th-century houses known for their gold-themed jewelry include Hermès and Ilias Lalaounis.

Find a stunning collection of vintage and antique gold jewelry on 1stDibs.

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.