$5,124Sale Price|20% Off
Exquisite Ashoka Diamond Halo Pendant Necklace in 14k White Gold
By Antinori Fine Jewels
Located in Chicago, IL
This exquisite pendant necklace showcases a captivating Ashoka diamond as its centerpiece, radiating brilliance and unique character.
Diamond, 14k Gold, White Gold
J. Birnbach GIA Certified 3.03 Carat I VS2 Cushion Cut (Ashoka) Diamond Ring
By J. Birnbach
Located in New York, NY
This exquisite platinum and 18K yellow gold solitaire ring showcases a breathtaking 3.03 carat cushion brilliant diamond (I VS2, GIA), offering exceptional brilliance and timeless el...
Diamond, 18k Gold, Platinum
ASHOKA Platinum Diamond Eternity Band
By William Goldberg
Located in New York, NY
A remarkable expression of refined luxury, this ASHOKA Diamond Eternity Band showcases the House's signature dedication to extraordinary diamonds and timeless design.
Diamond, Platinum
Boodles, 11.30 Carats Ashoka Three Stone Diamond Engagement Ring
By Boodles
Located in Chicago, IL
Designer: Boodles Diamond cut: Ashoka ( Round-Cornered Rectangular Modified Brilliant) Center Diamond GIA Report No.: 15008446 Date: November 10th, 2025 Carat: 5.03 carats Color: I C...
Diamond, Gold, 18k Gold, Rose Gold
J. Birnbach 65.01 Carat Total Ashoka Style Diamond Riviera Necklace
By J. Birnbach
Located in New York, NY
An extraordinary and important jewel, this platinum necklace is a masterwork of craftsmanship and scale. Composed of 71 elongated cushion brilliant cut diamonds with a total carat we...
Diamond, Platinum
GIA Certified Diamond Platinum Galaxy Earrings
By William Goldberg
Located in San Francisco, CA
Fantastic platinum galaxy earrings, each centering around an oval-shaped diamond (GIA 1.00-carat I/VS1 and 1.00-carat K/VS1), spiraling out to showcase round brilliant, oval, pear an...
Diamond, Platinum
5.03 Carat Antique Cushion Cut Diamond Ring in 18k Gold
Located in Chicago, IL
This gorgeous ring by Leibish features a 5.03 carat Ashoka cut diamond with I color and SI1 clarity mounted in a compass style claw prong ring.
Diamond, 18k Gold, Yellow Gold
Lab Diamond Solid 14k Yellow Gold Designer Jewelry Handmade Drop/Dangle Earring
Located in Jaipur, IN
This image depicts the Florentine Ashoka Yellow Gold Lab Diamond Earrings Details:- Item Code :- LEAMJOS-022 Material - 14K Solid Yellow Gold Lab Diamond - 2.46 Carat Gross Weight ...
Diamond, 14k Gold, Yellow Gold
J. Birnbach GIA Certified 4.01 Carat Ahsoka Style Elongated Cushion Diamond Ring
By J. Birnbach
Located in New York, NY
Elevate your jewelry collection with this stunning platinum halo ring, featuring a captivating Ashoka-style elongated cushion-cut diamond. The GIA-certified 4.01 carat center diamond...
Diamond, Platinum
J. Birnbach GIA 3.03 Carat Elongated Criss Cross Cushion Diamond Halo Ring
By J. Birnbach
Located in New York, NY
Experience the brilliance of this exquisite platinum halo ring, showcasing a rare and captivating Ashoka-style Criss-Cut diamond. The GIA-certified 3.03 carat radiant-cut center diam...
Diamond, Platinum
GRS Certified 2.55 Carat Burma Ruby No HeatAnd Diamond Ring In 18k White Gold
By Rewa Jewellery
Located in Bangkok, TH
Studded with 14 pieces of round shaped diamonds weighing approximately 0.16 carat and 2 pieces of ashoka shaped diamonds weighing approximately 0.37 carat.
Diamond, Ruby, 18k Gold, White Gold
0.5 Carat Round Brilliant Eternity Band Brilliant Classic Charm Diamond Ring
Located in Mumbai, IN
Meryl Streep · Collectors who love film stills will recognise how often a single ashoka diamond with controlled brilliant white light tells the whole story; this platinum eternity ba...
White Diamond, 18k Gold
Boodles 0.90ct Ashoka Diamond Halo Platinum Necklace
By Boodles
Located in Bishop's Stortford, Hertfordshire
Boodles 0.90ct Ashoka Diamond Halo Platinum Necklace Product Details Xupes Ref: COMJ826 Brand: Boodles Model: Ashoka Necklace Type: Necklace Age: 2016 RRP: £0 Accompanied By: Ashok...
Platinum
7.77 Carat Ashoka Diamond Ring with Pink Diamond Accents
Located in Carmel-by-the-Sea, CA
For she who desires something truly unique and special, the Ashoka cut diamond offers an elegant, uncommon shape and cutting style with superior brilliance and an enviable amount of ...
Diamond, Pink Diamond, 18k Gold, Rose Gold
J. Birnbach GIA Certified 3.07 Carat D SI1 Ashoka Diamond Engagement Ring
By J. Birnbach
Located in New York, NY
Make a bold statement with this stunning GIA 3.07ct D SI1 Ashoka Cut Diamond Ring, featuring a breathtaking 3.07 carat Ashoka cut center diamond.
Diamond, Platinum
Boodles 18 Karat Rose Gold Harmony Ashoka Cut Diamond Ring
By Boodles
Located in Bishop's Stortford, Hertfordshire
Xupes Code: COM1868 Brand: Boodles Description: 18k Rose Gold Harmony Ashoka Diamond Ring Accompanied With: Box Only Gender: Ladies UK Ring Size: L EU Ring Size: 51 US Ring Size: 5 3...
White Diamond, 18k Gold, Rose Gold
Boodles Trilogy Ashoka Cut Platinum Diamond Engagement Ring
By Boodles
Located in Bishop's Stortford, Hertfordshire
Boodles Trilogy Ashoka Cut Platinum Diamond Engagement Ring Brand- Boodles Model- Trilogy Ashoka Engagement Ring Product Type- Ring Accompanied By- Boodles Box, Diamond Certificate ...
Diamond, Platinum
Boodles 1ct Ashoka Cut Diamond Halo Platinum Stud Earrings
By Boodles
Located in Bishop's Stortford, Hertfordshire
Boodles 1ct Ashoka Cut Diamond Halo Platinum Stud Earrings Product Details Xupes Ref: COMJ827 Brand: Boodles Model: Ashoka Stud Earrings Type: Earrings Age: 2014 RRP: £0 Accompanied...
Platinum
Boodles 1ct Ashoka Cut Diamond Halo Platinum Stud Earrings
By Boodles
Located in Bishop's Stortford, Hertfordshire
Boodles 1ct Ashoka Cut Diamond Halo Platinum Stud Earrings Product Details Xupes Ref: COMJ827 Brand: Boodles Model: Ashoka Stud Earrings Type: Earrings Age: 2014 RRP: £0 Accompanied...
Platinum
Sold
H 0.18 in W 0.26 in L 16 in
Kwiat 18k White Gold 0.50ctw Ashoka Cut Diamond Solitaire Pendant Necklace
By Kwiat
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Diamond - Ashoka Proprietary Cut - Bezel Set - Clean White Color - 6x3.7mm - 0.50ct (approx.)
Diamond, Gold, 18k Gold, White Gold
J. Birnbach GIA 4.02 H VVS2 Ashoka Style Cushion Diamond Engagement Ring
By J. Birnbach
Located in New York, NY
Birnbach Platinum Engagement Ring, featuring a GIA certified 4.02 carat Cushion Cut Diamond. With H color and VVS2 clarity, this exceptional diamond radiates brilliance and fire, mak...
Diamond, Platinum
J. Birnbach GIA 4.01 Carat M SI2 Elongated Cushion Ashoka Style Diamond Ring
By J. Birnbach
Located in New York, NY
Showcasing a stunning 4.01 carat old elongated Ashoka style cushion cut diamond, graded M SI2 by GIA, the center stone radiates warmth and vintage-inspired brilliance.
Diamond
J. Birnbach GIA 3.50 Carat I SI2 Elongated Cushion Cut Diamond Solitaire Ring
By J. Birnbach
Located in New York, NY
Showcasing a stunning 3.50 carat elongated Ashoka style cushion cut diamond, graded I SI2 by GIA, the center stone radiates vintage-inspired brilliance.
Diamond, 18k Gold
Ashoka Diamond and Aquamarine Ring
Located in Bethesda, MD
A Santa Maria aquamarine is paired with two of Ashoka cut diamonds creating a ring of unparalleled beauty.
Aquamarine, Diamond, Platinum
J. Birnbach GIA Certified 0.42 Carat Ashoka Diamond Pendant Necklace
By J. Birnbach
Located in New York, NY
Birnbach Stones: Diamond Cut: Ashoka Carat Weight: 0.42 Carat Metal: Platinum Condition: Excellent Period: Contemporary Weight: 1.89 grams Length: 16 in
Diamond, 18k Gold
J. Birnbach 11.98 Carats Total Fancy GIA Yellow and White Diamonds Gold Ring
By J. Birnbach
Located in New York, NY
A knockout three-stone ring centering on a 9.50 carat Fancy Yellow radiant-cut diamond in an 18k yellow gold basket setting. This center stone is flanked by two rare Ashoka-cut white...
Diamond, White Diamond, Yellow Diamond, 18k Gold, Platinum
Ashoka Diamond Gold Engagement Ring
Located in Lambertville, NJ
18k yellow gold ring by Ashoka. Set with a total of 0.88ctw of Si1/H diamonds.
Diamond, Gold
Ashoka Diamond Gold Engagement Ring
Located in Lambertville, NJ
18k yellow gold ring by Ashoka. Set with a total of 1.33ctw of SI/H diamonds; 3 stone halo diamonds - 0.97ctw and round diamonds - 0.36ctw.
Diamond, Gold
Ashoka Diamond Gold Three Stone Engagement Ring
Located in Lambertville, NJ
18k white gold ring by Ashoka. Set with a total of 1.57ctw of Si1/Si2-H diamonds.
Diamond, Gold
Ashoka 1.49ctw Diamond Gold Drop Earrings
Located in Lambertville, NJ
18k white gold earrings by Ashoka . Set with two 0.50ct each SI2/H Ashoka cut center diamonds, surrounded by 0.49ctw of round diamonds.
Diamond, Gold
Ashoka 1.38 Carat Diamond Gold Engagement Ring
Located in Lambertville, NJ
New 18k white gold ring by Ashoka. Set with 1.38ctw in Si1/HI diamonds. Ring size - 6.75, ring top - 9mm x 14mm.
Diamond, Gold
Ashoka 1.21 Carat Diamond Gold Stud Earrings
Located in Lambertville, NJ
18k white gold earrings by Ashoka . Set with 1.21ctw in SI1/I diamonds. Retail $6795, brand new store sample.
Diamond, Gold
Ashoka 1.10 Carat Diamond Gold Pendant Necklace
Located in Lambertville, NJ
18k white gold necklace pendant by Ashoka. Set with a SI2/I 0.77ct center diamond and 0.33ctw in SI2/I side diamonds.
Diamond, Gold
9.37 Carats Diamond Eternity Band
Located in Chicago, IL
This amazing emerald cut eternity band contains 18 diamonds weighing 9.37 carats total. Mounted in platinum and beautifully crafted, this ring is perfect for a wedding band or to add...
Diamond, Platinum
Alexander Beverly Hills 4.41ct D-F VVS Emerald Cut Diamond Eternity Band 18k S.6
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
Stunning emerald cut diamond eternity band, by Alexander Beverly Hills. 23 emerald cut diamonds, 4.41 carats total. D-F color and VS clarity. Set in 18k white gold, 3.56 grams, size ...
Diamond, White Diamond, Gold, 18k Gold, White Gold
$3,756Sale Price|34% Off
3.50 Carat Emerald Eternity Band 14K Gold
Located in Rutherford, NJ
Yes to natural sparkle. Surprise your loved one with this diamond band and thank us later. Its modern symmetry is sure to wow your better half at the first glance. Gold- 1.81 gms...
Diamond, White Diamond, 14k Gold, White Gold
$10,100Sale Price|25% Off
Alexander Beverly Hills 4.21ct D-F VVS Emerald Cut Diamond Eternity Band 18k S.5
By Alexander Beverly Hills
Located in BEVERLY HILLS, CA
Stunning emerald cut diamond eternity band, by Alexander Beverly Hills. 22 emerald cut diamonds, 4.21 carats total. D-F color and VVS clarity. Set in 18k white gold, 3.48 grams, size...
Diamond, White Diamond, Gold, 18k Gold, White Gold
GIA Certified 20.05 Carats Radiant Cut Diamond Three-Stone Engagement Ring
By Roman Malakov
Located in New York, NY
A well-crafted engagement ring, featuring a 20.05 carats radiant cut diamond certified by GIA as O-P color and SI1 clarity, set on a four prong setting. Flanked by shield cut diamond...
Diamond, 18k Gold, Rose Gold
J. Birnbach GIA 2.91 Carat Total Elongated Cushion Cut Diamond Three Stone Ring
By J. Birnbach
Located in New York, NY
This elegant three-stone ring blends warmth and brilliance in a beautifully balanced platinum and 18K yellow gold setting. At the center is a 1.21 carat cushion brilliant diamond, ce...
Diamond, 18k Gold, Yellow Gold, Platinum
5.72 Carat Diamond Eternity Band
Located in New Orleans, LA
Twenty-three white diamonds of exceptional color and clarity, totaling 5.72 carats, dazzle in this expandable ring. Each emerald-cut stone has a brilliant white color ranging from F ...
Diamond, White Diamond, 14k Gold, White Gold
J. Birnbach GIA 3.67 Carat D I1 Cushion Cut Diamond Platinum Solitaire Ring
By J. Birnbach
Located in New York, NY
This platinum solitaire ring is a sophisticated showcase for an exceptional cushion brilliant cut diamond, combining classic elegance with beautifully detailed craftsmanship. At its ...
Diamond, Platinum
J. Birnbach GIA 5.01 Carat K VVS2 Two-Tone Cushion Cut Diamond Solitaire Ring
By J. Birnbach
Located in New York, NY
This platinum and 18K yellow gold solitaire ring is an exceptional showcase for a remarkable 5.01 carat cushion brilliant diamond. Certified by GIA and graded K VVS2, the center diam...
Diamond, Platinum, Yellow Gold, 18k Gold
Emerald Cut Diamond Eternity Band
By Diamond Scene New York
Located in New York, NY
A FABULOUS emerald cut diamond eternity band!! Over 11.50 carats of white elongated emerald cuts set in custom “U SETTING” platinum mounting. 7 mm wide *The emerald cuts have th...
Diamond, Platinum
3.80 Carat Emerald Cut Diamond Wedding Eternity Band In Platinum
By Simon Ardem
Located in New York, NY
Diamond Eternity Band set in Platinum. 22 Emerald cut diamonds are D-E-F VVS2-VS2. Carat weight: 3.80 ct. Total ring weight: 4.5 grams. Ring size: 5.5. Can be sized upon request. Thi...
Diamond, Emerald, Platinum
$8,230Sale Price|30% Off
18 Karat White Gold Emerald Eternity Diamond Ring '4 1/2 Carat'
Located in San Francisco, CA
This Eternity Ring showcase perfectly matched 23 Emerald shape Natural Diamonds in a total weight of 4.50 carat set in a shared prongs ring Product details: Center Gemstone Color:...
Diamond, Emerald, White Gold
J. Birnbach GIA Certified 7.02 Carat Cushion Cut Diamond Three-Stone Ring
By J. Birnbach
Located in New York, NY
This timeless platinum three-stone ring by J. Birnbach showcases a spectacular 7.02 carat cushion cut diamond at its center. Graded by GIA as K color and SI1 clarity, the center ston...
Diamond, Platinum
$5,550Sale Price|25% Off
18K Two-Tone Gold Illusion-Set Diamond Ring with Halo – 1.44 Carats
Located in Hong Kong, HK
A stunning display of optical brilliance, this elegant ring is crafted in 18K two-tone gold and features an illusion setting that showcases a center diamond cluster totaling 1.01 car...
Diamond, 18k Gold, Rose Gold, White Gold
$1,496 / item
H 0.32 in W 0.32 in
0.50 Carat Natural Diamond Halo Necklace 14 Karat White Gold G SI Chain
By Morris & David
Located in New York, NY
0.50 Carat Natural Diamond Halo Necklace 14K White Gold G SI 18 inches chain 100% Natural Diamonds, Not Enhanced in any way Round Cut Diamond Necklace 0.50CT G-H SI 14K White Gold ...
Diamond, 14k Gold, White Gold
Cushion Cut 7.56 Carats White Topaz and Diamond Gold Ring
By Diamond Stars Jewelry, Inc.
Located in New York, NY
Stunning White Topaz Ring The ring is 14K Rose Gold There are 0.06 Carats in Diamonds H SI The center stone is a Cushion Cut White Topaz 7.56 Carats The top measures 10/16" x 1/2" Th...
Diamond, White Diamond, Topaz, Gold, 14k Gold, Rose Gold
$1,760Sale Price|20% Off
Piaget Possession Diamond Eternity Ring - 18k Rose Gold - Spinning - Sz 6
By Piaget
Located in Orlando, FL
Authentic Piaget Possession diamond eternity band set with 36 round brilliant cut diamonds graded F color, VS clarity weighing an estimated 0.72ctw The band is approximately 4.7mm w...
Diamond, 18k Gold, Rose Gold
Van Cleef & Arpels 18K Yellow Gold Diamond Charm and Blue Alligator Watch
By Van Cleef & Arpels
Located in New York, NY
Van Cleef & Arpels 18K Yellow Gold Diamond Charm and Blue Alligator Watch. The epitome of luxury with this stunning VCA charm watch, a true marvel of craftsmanship and elegance. M...
Diamond, Yellow Gold
TIFFANY & CO. Victoria Burma Ruby Diamond Platinum Earrings.GIA
By Tiffany & Co.
Located in New York, NY
These gorgeous Tiffany & Co. earrings from the exquisite Victoria Collection are crafted in platinum and set with a round-cut bright red Burma rubies weighing an estimated 1.10 carat...
Diamond, Ruby, Platinum
$4,800,000
Harry Winston Diamond Necklace
By Harry Winston
Located in Sausalito, CA
Gorgeous 18k yellow gold necklace, containing total of 75 emerald cut fancy yellow diamonds signed by Harry Winston. Featured with a 10.75ct. cut-cornerd rectangular diamond as a pen...
EPIC John Galliano Evening Gown Black Silk Dress FW 08/09
By John Galliano
Located in Berlin, BE
This black silk evening gown by John Galliano, from his Fall/Winter 08/09 Collection is one of those moments: a love letter to the art of couture at its most theatrical and refined. ...
Van Cleef & Arpels 6.00cttw 18K Yellow Gold Multirow Pave Diamond Cocktail Ring
By Van Cleef & Arpels
Located in New York, NY
Van Cleef & Arpels 18K Yellow Gold 5-Row Pave Round Cut Diamond Ring. This stunning piece features a luxurious design with approximately 6.00 carats total weight of sparkling round-c...
Diamond, Yellow Gold
Pigeon's Blood Burmese Ruby and Diamond Necklace/Tiara, circa 1915
Located in London, GB
Pigeon's blood Burmese ruby and diamond necklace/tiara. Set to the centre with twenty six oval old cut natural unenhanced Pigeon's blood Burmese rubies in open back claw settings, ra...
Diamond, Ruby, Rose Gold, Platinum
GIA Certified 10.03 Carat Emerald Cut Diamond Platinum Ring
By Gad & Co.
Located in Miami, FL
GIA Certified Natural 10.03 Carat Emerald Cut elongated engagement ring. Set in Platinum and shouldered by two Tapered Baguette Cut Diamonds, the diamond ring is. GIA certified as "...
Diamond, White Diamond, Platinum
77.20 Carat Old European Cut Diamond Riviera Necklace
Located in New York, NY
Finely crafted in silver over gold with 46 Old European cut Diamonds weighing a total of 77.20 carats; the center Diamond weighing 5.77 carats. 18 3/4 inches long
Diamond, Gold, Silver
Falize Reversible Cloisonné Enamel Earrings
Located in New Orleans, LA
Crafted by the renowned 19th-century French jeweler Alexis Falize, these exquisite earrings are a rare testament to his mastery of cloisonné enamel. With an ingenious reversible desi...
Diamond, Pearl, Ruby, Yellow Gold, Enamel
Harry Winston Diamond Bracelet
By Harry Winston
Located in New York, NY
Harry Winston Diamond Bracelet A beautiful Harry Winston cluster bracelet set with approximately 42 carats of diamonds Made in 1965 Accompanied by an IAJA letter of authenticity ...
Diamond, Platinum
$10,070
H 14.97 in W 23.63 in D 9.06 in
Chanel 2002-2003 Diamond Quilted Black Leather Travel Bag 60cm Unisex
By Chanel
Located in London, GB
This luxurious travel bag is crafted from black calf leather and features classic diamond quilting and gold-tone hardware. It includes two top handles and an adjustable, detachable s...
Harry Winston Jacques Timey Vintage Sapphire Diamond Bib Necklace
By Harry Winston
Located in New York, NY
Gemstone Details: 19 Sugarloaf Burma No Heat sapphires Total Weight: 135-145 carats Origin: Burma Certification: SSEF Diamonds: Total Weight: 45-50 carats Color/Clarity: G-H/VS Metal...
Diamond, Sapphire, Platinum
Christian Dior Denim Saddle Bag
By Christian Dior, John Galliano for Christian Dior
Located in Bressanone, Trentino-Alto Adige
Christian Dior by John Galliano Saddle bag in denim color blue and beige leather, gold hardware. Condition: Excellent. Packing/accessories: Box, dustbag and authenticity card. ...
Harry Winston 44.50ct Round Diamond Platinum Necklace, Signed Jacques Timey
By Harry Winston
Located in New York, NY
Carat Weight: 44.50 cts. Color/Clarity: F-H VS Certifications: HW papers Size: 16.75 inches Creator: Harry Winston Metal: Platinum Weight: 68.89 grams Period: 1980s Condition: Used -...
Diamond, Platinum
Harry Winston Cluster 43 carats GIA Certified Diamond Cluster Earrings
By Harry Winston
Located in New York, NY
Harry Winston Diamond Cluster Earrings This pair of earrings has marquise brilliant-cut diamonds of 3.35 and 3.02 carats, and pear brilliant-cut diamonds ranging from 3.42 to 2.42 ...
Diamond, Platinum
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.