Vintage A. Tillander Diamond Platinum Tiara
Located in London, GB
An A. Tillander diamond platinum tiara, circa 1910. This exceptional diamond tiara by A. Tillander
Vintage 1910s European Retro Choker Necklaces
Diamond, Platinum
Vintage A. Tillander Diamond Platinum Tiara
Located in London, GB
An A. Tillander diamond platinum tiara, circa 1910. This exceptional diamond tiara by A. Tillander
Diamond, Platinum
Vintage Diamond and Platinum Tiara Necklace, Circa 1960, 50.00 Carats
Located in London, GB
A vintage diamond and platinum tiara necklace, with a fringe of geometric pendants, with a large
Diamond, Platinum
Platinum Diamond Tiara Ring
Located in Beverly Hills, CA
Trumpet & Horn's exclusive Tiara ring is reminiscent of Victorian times when jewelry and fashion
GIA Antique 3 Stone 4 Carats Fancy Intense Yellow Diamond Ring
By Belrose Estate Jewelers
Located in Santa Barbara, CA
A trio of charming, antique diamonds rescued from an antique Czechoslovokian tiara have been
Diamond, Platinum
Antique Fernch Floral Diamond Platinum Wedding Tiara
Located in Miami, FL
Antique French Floral Design Platinum Diamond Tiara with Detachable Brooch This magnificent French
Diamond, Platinum
Antique Belle Époque Diamond Tiara in Platinum and Gold.
Located in San Francisco, CA
Well well well. If only this tiara could talk - I'd just love to know the people and outfits this
Diamond, Gold, Platinum
Circa 1920 Natural Unenhanced Burmese Sapphire Diamond Platinum Necklace Tiara
Located in London, GB
velvet lined tiara frame, approximately 2.8cm in height at highest point. Tested platinum, circa 1920
Diamond, Blue Sapphire, Platinum
Antique Platinum 14K Yellow Gold 3.50 Carats Diamond Large Crown Tiara Charm
Located in New York, NY
Antique Platinum and 14K Gold 3.50 Carat Diamond Crown Tiara Royal Charm 32.4mm wide 22.2mm height
Diamond, 14k Gold, Platinum, Yellow Gold
0.65 Carat Emerald and Diamond Tiara Cocktail Ring Made in Platinum
Located in Tokyo, JP
Platinum. People have admired emerald’s green for thousands of years. Emeralds have always been associated
Diamond, Emerald, Platinum
55.44 Carat Diamond Tiara / Necklace
Located in New York, NY
Finely crafted in platinum with Pear-Shaped, Marquise, and Round Brilliant cut Diamonds weighing a
Diamond, Platinum
Edwardian Old Cut Diamond Tiara
Located in London, GB
An Edwardian platinum diamond set tiara. This diamond tiara is beautifully handcrafted in platinum
Diamond, Platinum, Steel
Antique Edwardian 14K Yellow Gold and Platinum 1.75 Carat Diamond Tiara Ring
Located in Cape May, NJ
Era: Edwardian Estate Composition: 14K Yellow Gold & Platinum Primary Stones: Three Pear and Twenty
Diamond, 14k Gold, Yellow Gold, Platinum
$120,000
Diamond Tiara by J.E. Caldwell
By J.E. Caldwell & Co.
Located in New York, NY
this breathtaking tiara is a vision of elegance and refinement. Crafted in 18K white gold and
Diamond, 18k Gold, Platinum
Vintage Sapphire and Diamond Convertible Tiara Necklace
Located in London, GB
diamond convertible tiara and necklace set, in platinum, circa 1950. This beautifully handcrafted tiara
Diamond, Sapphire, Platinum
$99,539Sale Price|20% Off
L 17.33 in
Diamond Necklace, Vintage 1950s – Convertible Tiara for Weddings & Collectors
Located in London, GB
This stunning vintage 1950s diamond necklace showcases exceptional craftsmanship in platinum
Diamond, Platinum
Natural Pearl and Diamond Tiara/Necklace/Bracelet, circa 1920
Located in London, GB
Natural pearl and diamond tiara/necklace/bracelet. Set with twenty seven round natural saltwater
Diamond, Natural Pearl, Platinum
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
Diamond, Ruby, Rose Gold, Platinum
GIA Certified 32.03 Carat Fancy Pear Marquise Shaped Diamond Tiara Necklace
By Hasbani Diamonds
Located in London, GB
Necklace in Platinum has been designed and Made In Britain. British Hallmarked and comes with 17 GIA
Diamond, White Diamond, Platinum, 18k Gold
K.uno Princess Tiara 0.30ct D-VS1 Diamond & Alexandrite Ring in Pt900 – US 4 1/2
Located in Tokyo, JP
color and sophistication. Made in premium Pt900 platinum, the ring showcases a graceful tiara motif
Diamond, Platinum
A turn of the 20th century diamond-set fringe tiara
Located in London, GB
A turn of the 20th century diamond-set fringe tiara, the base consisting of interlocking openwork
Diamond, Platinum
An early 20th century diamond-set tiara by Skinner & Co
Located in London, GB
total of 5 & ¾ carats, all mounted in platinum, with base metal tiara frame, converting to a necklace
Diamond, Platinum
Stephen Russell Edwardian Design Diamond And Pearl Platinum Tiara
By Stephen Russell
Located in New York, NY
An elegant Stephen Russell Edwardian design diamond and pearl platinum tiara designed as a series
Diamond, Pearl, Platinum
Elegance Unbounded: Diamond & Pearl Platinum Tiara
Located in Wimberley, TX
A tiara is a type of head ornament worn as a mark of nobility or royalty on formal or state
Diamond, Natural Pearl, Platinum
Platinum Tiara Engagement Ring set with a .70 carat Diamond
Located in Los Angeles, CA
Trumpet & Horn's exclusive Tiara ring is reminiscent of Victorian times where jewelry and fashion
Diamond, Platinum
Unavailable
Platinum Ruby Tiara Eternity Band
Located in METAIRIE, LA
This Platinum Ruby & Diamond Tiara Band features a total of 16 Baguette cut Rubies totaling 0.75
Diamond, Ruby, Platinum
Platinum Turned Out Belgian Diamond Tiara Ring
Located in New York, NY
Created in luxurious platinum, a tiara-like configuration is formed by 10 bezel-set round brilliant
Platinum Turned Out Invincible Tiara Diamond Ring
Located in New York, NY
Crafted in platinum, smooth bezel settings surround four 2.7mm G-H color round brilliant-cut
Platinum Turned Out Belgian Tiara Curved Diamond Ring
Located in New York, NY
Nine 2.2mm round brilliant cut diamonds set in platinum bezel settings dot the finger in the shape
STACY ENGMAN ART ROYALTY - 2 Ct Diamond Sunglasses-Tiara In Platinum
By Stacy Engman
Located in New York, NY
STACY ENGMAN ART ROYALTY - 2 Carat Diamond Sunglasses-Tiara In Platinum The legendary art museum
Diamond, Platinum
David Rosenberg Platinum 96 Carats Pear and Round Shape Diamond Tiara Necklace
By David Rosenberg
Located in Boca Raton, FL
This handmade Platinum Necklace has over 96 Carats of Pear Shape and Brilliant Cut Diamonds. It has
White Diamond, Platinum
Stacy Engman ART ROYALTY 45ct Aqua with 4ct Diamond Sunglasses-Tiara in Platinum
By Stacy Engman
Located in New York, NY
-Tiara set in platinum The legendary art museum curator and style icon Stacy Engman coined the original
Aquamarine, Diamond, Platinum
Verdura 18 Karat Yellow Gold, Platinum and Diamond "Tiara" Feather Cuff
By Verdura
Located in Greenwich, CT
"Tiara" feather cuff bracelet, in textured 18k yellow gold and platinum, featuring 361 round
Diamond, Yellow Gold
STACY ENGMAN ART ROYALTY - 6ct Diamond Kinetic Sapphire Sunglasses-Tiara
By Stacy Engman
Located in New York, NY
Sunglasses-Tiara by Stacy Engman ART ROYALTY Features 3.5ct diamonds with 2.5ct sapphires set in platinum to
Diamond, Sapphire, Platinum
STACY ENGMAN ART ROYALTY - Pink Sapphires, Diamonds, Moonstone Sunglasses-Tiara
By Stacy Engman
Located in New York, NY
STACY ENGMAN ART ROYALTY - Pink Sapphires, Diamonds, Moonstone Sunglasses-Tiara The legendary art
Diamond, Moonstone, Pink Sapphire, Platinum
The Age of the Vanderbilts Diamond Black Velvet Choker/Bracelet/Tiara
Located in Los Angeles, CA
incredible bracelet by adding clasps, or even turn it into a tiara.) There are over 13 carats of Old European
Diamond, Platinum
STACY ENGMAN ART ROYALTY - 4.5 Ct Diamond Sunglasses-Tiara w 1cts Sapphire;Ruby
By Stacy Engman
Located in New York, NY
STACY ENGMAN ART ROYALTY -- 1 Carat Sapphire; 1 Carat Ruby: 4.5 Carats Diamond Sunglasses-Tiara set
Diamond, Ruby, Blue Sapphire, Platinum
Art Deco circa 1920, 7.13 Ct White Diamond & 6.50 Ct Aquamarine Tiara & Necklace
Located in Berlin, Berlin
? Up until a century ago, a tiara was one of the fixtures of a lady’s ball attire. There’s hardly any
Aquamarine, Diamond, Platinum
Diamond & Platinum Tiara
Located in Carmel-by-the-Sea, CA
Handmade Platinum estate Tiara containing approximately 4.85 carats of beautifully matched Rose Cut
Diamond, Platinum
White and Yellow Diamond Platinum Tiara Ring
Located in Southampton, PA
Gorgeous, lavish and irresistibly dazzling, this extraordinary platinum ring boasts a tantalizing
White Diamond, Yellow Diamond, Platinum
Victorian Natural Pearl Diamond Platinum Tiara Comb Brooch
Located in New York, NY
This magnificently ornamented antique tiara features natural saltwater pearls (ten pearls measure
Diamond, Natural Pearl, Platinum
Edwardian Diamond Platinum Lattice Tiara, Circa 1905
Located in London, GB
An antique diamond tiara, set with old-cut diamonds, with a two row diamond cluster, with a
Diamond, Platinum
Edwardian Sapphire Diamond Platinum 18 Karat Yellow Gold Antique Tiara Ring
Located in Philadelphia, PA
medium blue Set with yellow gold bezel with a pierced platinum-topped tiara-like gallery surround Topped
Sapphire, Diamond, Platinum, Yellow Gold, 18k Gold, Gold
The Zsa Zsa Gabor Diamond Tiara
Located in Chicago, IL
Circa: 1920s Platinum, Diamond and Pearl Tiara, once belonging to and worn by Zsa Zsa Gabor. Having
Diamond, Cultured Pearl, Platinum
Edwardian 1.48 Carat GIA Old European Cut Diamond Tiara Engagement Ring
Located in Los Angeles, CA
Early Edwardian era 1.48 Carat Old European Cut Diamond "Tiara" Engagement Ring composed of 14k
Diamond, 14k Gold, Platinum
GCS Certified Natural Sri Lanka Sapphire 21ct & Diamond Antique Necklace/Tiara
Located in London, GB
platinum. The necklace is flexible and gracefully draping down to your chest. Could also be worn as a head
Diamond, Sapphire, Platinum
Edwardian Diamond Gold Platinum Tiara
Located in Chicago, IL
Circa 1915 Platinum Top and Gold Backed Tiara in a classic Edwardian style. Measuring 5 1/2 inch in
Diamond, 14k Gold, Platinum
1910s Antique Diamond and Platinum Tiara
Located in Geneva, CH
Unique and Amazing, Decorated with swag motifs, set with numerous old European-cut diamonds. Circa 1910. The diamonds, weighing a total of approximately 12.00 carats. Internal circu...
Diamond, Platinum
Edwardian Tiara Necklace and Bracelets with Emerald, Diamond and Platinum
Located in London, GB
An Edwardian emerald and diamond tiara, choker and bracelet combination, of fine open work with a
Diamond, Emerald, Platinum
Art Deco Convertible Diamond Tiara in Platinum, Cased by Garrard
Located in London, England
A phenomenal Art Deco convertible diamond tiara in platinum, circa 1930, cased by and attributed to
Diamond, Platinum
Gorgeous Vintage Diamond Tiara Cluster Eternity Ring Band in Platinum, 6.00ct
Located in San Francisco, CA
This GORGEOUS Vintage Diamond Tiara Cluster Ring Band in Platinum is insanely awesome! I am totally
Diamond, Platinum
Tiara-Motif Diamond Ring
Located in New York, NY
This stunning and classic Art Deco diamond ring is crafted in solid platinum, weighing 11 grams and
Diamond, Platinum
Early Art Deco Convertible Diamond and Natural Pearl Tiara Choker in Platinum
Located in London, England
A truly spectacular antique diamond and pearl convertible diadem/choker, set in platinum. Circa
Diamond, Natural Pearl, Platinum
Antique Diamond Tiara/Bracelet, circa 1890
Located in Aspen, CO
Platinum and diamond tiara/bracelet, circa 1890, this piece has both European cut diamonds and rose
Diamond, Platinum
Sold
W 0.94 in D 0.28 in L 6.5 in
Antique Belle Époque Sapphire Diamond Filagree Ladies Platinum Gold Dress Watch
Located in Miami Beach, FL
having a marquise diamond in the center. The watch is marked Plat 14k on the band - the head is platinum
Diamond, Sapphire, 14k Gold, White Gold, Platinum, Gold
Edwardian Diamond Platinum Gold Tiara
Located in London, GB
An Edwardian diamond tiara, with foliate swags and floral motifs graduating from the centre, set in
Diamond, Yellow Gold, Platinum
Turn of the Century Diamond and Platinum Kokosnik Tiara
Located in London, GB
A Turn-of-the-Century diamond and platinum Kokosnik tiara, the seven old European-cut diamonds
Diamond, Platinum
Belle Époque Diamond Tiara
Located in London, GB
A Belle Époque diamond tiara, to the centre three diamond-set clusters with diamond-set foliate
Diamond, Platinum
Edwardian Diamond Garland Necklace/Tiara
Located in London, GB
platinum mount with pearl back chain and bolt clasp, circa 1910, gross weight 25.3 grams. Should you choose
Diamond, Platinum
An early-20th century diamond-set tiara
Located in London, GB
An early-20th century diamond-set tiara, to the centre seven graduating rows of square-cut diamonds
Diamond, 18k Gold, Platinum, Silver Plate
A turn of 20th century diamond fringe tiara/necklace
Located in London, GB
A turn of 20th century diamond fringe tiara/necklace, graduating from the centre formed by thirteen
Yellow Gold, Platinum
Chaumet Paris Emerald Diamond Platinum Tiara
By Chaumet
Located in New York, NY
Edwardian emerald and diamond tiara/diadem delicately set in openwork platinum, made by famed
Diamond, Emerald, 18k Gold, Platinum
Magnificent Edwardian Diamond Court Tiara
Located in New York , NY
Magnificent Edwardian Diamond Court Tiara Large and Impressive Edwardian Diamond Platinum Tiara
Platinum & Gold Edwardian Necklace/Tiara
Located in New York City, NY
Platinum and Gold, Diamonds Edwardian Necklace. Converts into a Tiara with fitted frame. Fitted
MAGNIFICENT PHIPPS FAMILY Edwardian Platinum Diamond Tiara
Located in New York , NY
A magnificent Edwardian Diamond and Platinum Louis XVI Style Tiara . Provenance: Phipps family. The
Diamond, Platinum
Gold, Platinum, Moonstone and Diamond Tiara Brooch
Located in Atlanta, GA
Own your own version of royalty. This sweet and delicate brooch is designed as a tiara set with
Diamond, Moonstone, Platinum, 14k Gold
"Joséphine" Tiara
Located in New York, NY
An exceptionnal 1850, platinum, natural pearl and diamond tiara.
Diamond, Natural Pearl, Platinum
Edwardian Tiara/Necklace Combination
Located in New York City, NY
Platinum and Yellow Gold, Diamonds, Tiara/Necklace, circa 1910
Antique Diamond Tiara Style Brooch
Located in Lakewood, NJ
Antique Platinum Old Miner Diamonds Tiara Style Brooch. One of a kind gold with platinum
Diamond
Antique circa 1914, 16.02 Carat Diamond White Gold Laurel Tiara and Necklace
Located in Berlin, Berlin
tiaras were created at the time. One of the first to do so was Fabergés work master Albert Holmström
Diamond, 14k Gold, White Gold, Platinum
Original Antique Tiara Ring or "Bague Duchesse" Total Carat Weight 3.7 Carat
Located in Miami, FL
Original antique tiara ring or "bague Duchesse" total carat weight 3.7ct. Center 1.89ct GIA
White Diamond, 18k Gold, Platinum
Edwardian circa 1910, P.G. Dodd, London: 14.69 ct Diamond Platinum Tiara
Located in Berlin, Berlin
the metal in which they have so generously been set: platinum. At the time of the tiara’s making
Diamond, Platinum, Base Metal
1970s Louis Feraud Couture Tan Lace Floral Embroidered Dress
By Louis Feraud
Located in San Francisco, CA
Louis Feraud 1970s haute couture light brown lace dress in a 1920s style drop waist silhouette. Amazing embroidered lace and hand finished seam allowances. Small buttons conceal a ba...
Hermes Kelly Pochette Prunoir Matte Alligator with Palladium Hardware
By Hermès
Located in North Miami Beach, FL
Brand: Hermès Model: Kelly Pochette Size: 22 × 13 × 7 cm Material: Alligator Mississippiensis (Matte) Hardware: Palladium Exterior / Interior Color: Prunoir Year / Stamp: O in ...
$1,238Sale Price|44% Off
Size: 40
Rare Tom Ford for Yves Saint Laurent YSL Lotus Heels 2004 Pumps Sz 40
By Yves Saint Laurent
Located in Conroe, TX
Yves Saint Laurent Heels Worn Twice. Only signs of Use is to the Sole, the Uppers are Perfect * Tom Ford Lotus Runway Ad Heels * This was his last collection for Yves Saint Laurent...
Yves Saint Laurent Coco Brown Form-Fitting Lined Jersey Dress
By Yves Saint Laurent
Located in New York, NY
Yves Saint Laurent coco brown form-fitting lined jersey scoop-neck dress features a handkerchief hemline on both the dress's hem and also on the bell-sleeve's cuff. Detaile...
$3,135 / item
W 0.16 in L 7.25 in
Emerald, Ruby, Blue Sapphire Tennis Bracelet with Diamonds in 18K White Gold
By VR Jewels
Located in New York, NY
ERS bracelet in 18K Gold. It has a perfect oval cut gemstone studded with diamonds to make you stand out on any occasion or an event. A tennis bracelet is an essential piece of jewe...
Diamond, Emerald, Ruby, Blue Sapphire, 18k Gold, White Gold
Vicky Tiel 1980s Silk Strapless High Low Bustier Dress
By Vicky Tiel
Located in Water Mill, NY
A great pink silk high low dress from Vicky Tiel. It has a drop waist horizontally ruched boned bustier bodice onto which is gathered a full skirt knee length in the front, ankle len...
Dolce & Gabbana Lace up Silk Dress
By Dolce & Gabbana
Located in Water Mill, NY
A beautiful stretch silk leopard print dress from Dolce & Gabbana. The bodice has adjustable straps, functional and adjustable side lacing through to the hips plus rows of top stitch...
$6,920
H 3.1 in W 3.9 in L 0.8 in
Chanel Waist Classic Flap Rare Vintage 90s Limited Edition Micro Mini Bronze Bag
By Chanel
Located in Miami, FL
Chanel Rare Vintage 90's Limited Edition Micro Mini Classic Flap Bag 1991 {VINTAGE 33 Years} Gold Hardware Bronze quilted lambskin leather CC Turnlock Leather lined interior 3.9" W ...
1990s Loris Azzaro Brown Sequin Strapless Cocktail Dress
By Loris Azzaro
Located in Beverly Hills, CA
1990s Loris Azzaro brown sequin metallic strapless cocktail party dress. fit size 4
ALEXANDER McQUEEN S/S 1996 Brown Plunging Keyhole Neck Bodycon Midi Dress
By Alexander McQueen
Located in Thiensville, WI
ALEXANDER McQUEEN S/S 1996 Brown Plunging Keyhole Neck Bodycon Midi Dress Brand / Manufacturer: Alexander McQueen Collection: Spring / Summer 1996 Designer: Alexander McQueen Sty...
Jean Paul Gaultier Sweater with Belt 1990s
By Jean Paul Gaultier
Located in Water Mill, NY
A fabulous rust orange striped wool sweater from Jean Paul Gaultier. It has long sleeves, a standup collar with functional silver buttons closure along it's side and one shoulder and...
$7,370
H 4.34 in W 8.67 in D 6.7 in
2017 Dior Blue Oblique Monogram Canvas & Calfskin Leather Jewellery Case
By Christian Dior
Located in Bishop's Stortford, Hertfordshire
CHRISTIAN DIOR Blue Oblique Monogram Canvas & Calfskin Leather Jewellery Case Serial Number: 37-MA-1117 Age (Circa): 2017 Accompanied By: Dior Dust Bag, Box, Protective Felt, Selfri...
$7,920
H 6.7 in W 13 in L 5.9 in
Chanel Bowling Bag Luxury Ligne Leather As Seen On Ivanka Trump Red Lambskin Bag
By Chanel
Located in Miami, FL
As seen on Ivanka Trump, this is a gorgeous luxury ligne Chanel satchel in excellent condition.
$1,295
Size: 46 / US 10
Vintage Missoni Spring 2004 SZ 46 2000s Fully Sequin Blue Y2K Knit Halter Dress
By Missoni
Located in San Diego, CA
Never worn early 2000s MISSONI fully sequined striped knit halter dress ! Features vibrant colors of blue, turquoise, navy blue and yellow throughout. Thousands of hand-sewn clear se...
Gianni Versace Vintage Black Bondage Dress with Gold Hardware, 1992
By Gianni Versace
Located in Los Angeles, CA
Condition : Excellent Vintage Condition Size : 38 A rare and unusual vintage Gianni Versace black bondage dress with lattice bodice, sides, and back with gold medallions hardware. Se...
2008 Prada James Jean Fairy Collection Pink Print Silk Dress
By Prada
Located in Boca Raton, FL
Italian luxury brand Prada has made a mark with their refined styles and classic reinventions. However, the namesake designer Miuccia Prada is no stranger to considering creative twi...
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.