Platinum Diamond Flower Cluster Brooch
Located in New York, NY
A platinum and diamond brooch. Designed as a cluster of a flower and leaves set with approximately 131 round brilliant cut diamonds suspending three swags set with approximately 68 ...
Diamond Cluster Brooch
By Elwood Van Clief
Located in New York, NY
Diamond Cluster Brooch A cluster of fine marquise and pear shaped diamonds set in platinum Diamonds total approximate weight: 26.48ct Made by Van Clief
Diamond, Platinum
2.00 Carat Diamonds Cluster Brooch Pendant Pin Platinum Estate Cluster Cocktail
Located in New York, NY
Estate Prime Cocktail 2.00ct. Natural diamonds Brooch Cluster pin. Rounds, Full cut Brilliant.
Diamond, Platinum
$6,500
W 1.95 in L 0.97 in
5.00 Carat Diamonds Cluster Brooch Pendant Pin Platinum Estate Cluster Cocktail
Located in New York, NY
Estate Prime Cocktail 5.00ct. diamonds Brooch Cluster pin. Baguettes, Marquise & Rounds, Full cut Brilliant.
Diamond, Platinum
Vintage Aquamarine, Diamond and Platinum Cluster Brooch, Circa 1930
Located in London, GB
A vintage aquamarine and diamond cluster brooch, with an emerald-cut, pale aquamarine, in a claw setting, surrounded by old-cut diamonds, in millegrain edged rub over settings, with ...
Aquamarine, Diamond, Platinum
Antique Diamond Cluster Brooch
Located in London, GB
Here we have an outstanding diamond brooch from the Edwardian era. A platinum frame has been crafted in an open swirling fashion with petalled motifs which play host to a multitude o...
Diamond, Platinum
Antique Edwardian 18K Gold & Platinum Turquoise & 0.22ctw Diamond Cluster Brooch
Located in Staines-Upon-Thames, GB
An antique diamond, turquoise, platinum, and yellow gold brooch, comprising two old European cut diamonds, and two oval turquoise cabochons, set in platinum, with 18 karat yellow gol...
Diamond, Turquoise, 18k Gold, Yellow Gold, Platinum
George Weil Diamond Cluster Brooch
By George Weil
Located in London, GB
Here we have a remarkable brooch by George Weil, crafted from 18ct yellow gold and platinum. This vintage piece showcases a vast array of thin textured bars providing depth to design...
Diamond, 18k Gold, Yellow Gold, Platinum
$24,950
W 1.8 in L 2.7 in
Vintage Gold & Platinum 93.5ctw GIA Cabochon Emerald Diamond Cluster Brooch Pin
Located in Montclair, NJ
-- Stone(s) -- (7) Natural Genuine Emeralds - Oval Cabochon Cut - Prong Set - 15x11mm t0 20x14.6mm - 90ctw (approx. - based on GIA measurements)** See Certification Details Below for...
Diamond, Emerald, Gold, White Gold, Platinum
$10,998
W 0.93 in L 2.1 in
Vintage Platinum 7.50ctw Baguette & Round Diamond Cluster Leaf Floral Pin Brooch
Located in Montclair, NJ
--Stone(s):-- Natural Genuine Diamonds - 18 Baguette Cut & 102 Round Brilliant Cut - Channel & Prong Set - G-I Color - VS1/VS2 Clarity w/ Few SI - 7.50ctw (approx.) Material: Solid ...
Diamond, Gold, 14k Gold, White Gold, Platinum
1910s Sapphire and Diamond Cluster Yellow Gold Bar Brooch
Located in Jesmond, Newcastle Upon Tyne
A fine and impressive 0.16 carat natural blue sapphire and 0.26 carat diamond cluster set, 15 karat yellow gold, platinum set bar brooch; part of our diverse antique jewelry and esta...
Diamond, Sapphire, 15k Gold, Yellow Gold, Platinum
David Webb 1960's Impressive 25 Carat Diamond Cluster Brooch
By David Webb
Located in New York, NY
This is an impressive David Webb cluster diamond brooch crafted in 1960's set in platinum.
Diamond, Platinum
Vintage 1960s Harry Winston Diamond Cluster and Emerald Drop Brooch/Pendant
By Harry Winston
Located in New York, NY
Finely crafted in platinum with Pear-Shaped and Marquise cut Diamonds weighing a total of 11.31 carats, a Pear-Shaped Colombian Emerald weighing 4.04 carats, and a Marquise cut Colom...
Diamond, Emerald, Platinum
Art Deco 1.00 Carat Diamond Pearl Platinum Floral Cluster Stickpin
Located in Philadelphia, PA
Centering a round button pearl measuring approximately 4.0 mm; cream in body color with silvery overtones and excellent luster Surrounded by 1.00 carat of transitional cut diamonds,...
Diamond, Pearl, Platinum
Edwardian 0.85 TCW Diamond Yellow Gold and Platinum Cluster Pin
Located in Towson, MD
This refined Edwardian cluster pin is crafted in 14 karat yellow gold with a platinum-topped setting, characteristic of the early 20th century. The pin head measures 0.5 inches and i...
Diamond, Gold, 14k Gold, Yellow Gold, Platinum
Harry Winston - Pear, Marquise and Round Cut Diamond Cluster Ear Clips/Brooch
By Harry Winston
Located in New York, NY
Harry Winston's craftsmanship and attention to detail stands out in these Diamond Cluster Earrings and detachable brooch. The cluster design features multiple shaped diamonds set clo...
Diamond, Platinum
An Edwardian ruby and diamond cluster brooch/pendant
Located in London, GB
An Edwardian ruby and diamond brooch/pendant, the cushion-shaped faceted ruby estimated to weigh 2.8 carats, accompanied by GCS report stating to be of Burmese origin with no indicat...
Diamond, Ruby, Platinum
An Edwardian Star Ruby And Diamond Cluster Stick Pin
Located in London, GB
An Edwardian star ruby and diamond cluster stick pin, the oval shaped cabochon-cut ruby estimated to weigh 0.5 carats, surrounded by eighteen rose-cut diamond, all fine millegrain-se...
Diamond, Star Ruby, 18k Gold, Yellow Gold, Platinum
Unavailable
W 1.5 in L 2.5 in
Oscar Heyman Platinum & 18k Gold Grape Cluster Brooch with 29.4 Carat Gemstones
By Oscar Heyman
Located in Sherman Oaks, CA
Gorgeous, unique grape cluster brooch by Oscar Heyman. Features 24.9 carat of diamonds and sapphires set in platinum and 18k yellow gold.
Diamond, Pink Sapphire, Yellow Sapphire, Gold, 18k Gold, Yellow Gold, Pl...
Unavailable
W 0.45 in D 0.04 in L 1.13 in
Platinum 5.54ct Diamond Floral Cluster Pendant w/ 1.0ct Center Stone
Located in Fort Lauderdale, FL
Designer 18K yellow gold 0.42CT Round cut diamond drop dangle earrings. This outstanding set of earrings are crafted in beautiful rich 18K yellow gold and feature multiple diamonds (...
Diamond, Platinum
Diamond Cluster Platinum Brooch Pendant
Located in Southampton, PA
A tantalizing expression of unblemished prestige and sophisticated excellence, this amazing brooch boasts a spellbinding setting of lustrous diamonds amounting approximately to 11.50...
White Diamond, Platinum
Ruby Diamond Platinum Cluster Brooch
Located in Southampton, PA
Producing a sight of spellbinding beauty and fascinating prestige, this astonishing pin is made of splendid platinum embellished with a glorious arrangement of scintillating diamonds...
Ruby, White Diamond, Platinum
Harry Winston Diamond Platinum Cluster Brooch
By Harry Winston
Located in Southampton, PA
Showcasing their fascination with diamonds, excellence and elegance, Harry Winston created this extraordinary platinum brooch that places focus on the glorious resplendence of mesme...
White Diamond, Platinum
Platinum Diamond 4.5 Carat Cluster Brooch Pin
Located in Baltimore, MD
Platinum Diamond 4.5 Carat Cluster Brooch Pin Metal: Platinum Weight: 10.92 grams Diamonds: Approx. 4.5 CTW F-G VS round, baguette & marquise diamonds Length: 48MM Width: 28MM
Diamond, Platinum
Diamond Platinum Grape Leaf Cluster Brooch Pin
Located in Miami, FL
This brooch with variously cut genuine diamonds is crafted in solid platinum and weighs approx. 28.4 grams, measuring 2.1/2” long and 1 ½” wide. Artfully designed to simulate a bunc...
Diamond, Platinum
Mid Century Diamond Sapphire Platinum Cluster Brooch
Located in Beverly Hills, CA
One Mid Century Diamonds Sapphire Platinum Cluster Brooch. Featuring 62 round brilliant cut diamonds with a total weight of approximately 7.15 carats, graded near-colorless, VS clari...
Diamond, Sapphire, Platinum
David Webb Diamond and Platinum Cluster Brooch
By David Webb
Located in Southampton, PA
A sight of unblemished prestige and glamorous resplendence, this amazing brooch from David Webb is made of gleaming platinum and embellished with dazzling F-color diamonds of VS clar...
Diamond, White Diamond, Platinum
Diamond Cluster and Emerald Platinum Spiral Brooch
Located in Southampton, PA
Elevate your style in a stunningly luxurious manner with this incredibly extravagant brooch that boasts an intriguingly intricate design lavishly topped off with a resplendent blend ...
White Diamond, Emerald, Platinum
30.50carats Diamond Platinum Flower Cluster Prominent Brooch Pin
Located in Miami, FL
A dance of light and sparkle, in a stunning 1980's floral-inspired brooch pin. Crafted in solid platinum, composed by high-quality natural diamond round-cut, marquise-cut & pear cut...
Diamond, Platinum
Mother of Pearl Diamond Platinum Cluster Brooch and Pendant
Located in Beverly Hills, CA
This piece can be worn as a brooch as well as a pendant, with a loop under the diamonds for a chain. It features mother of pearl inlay and VS clarity G-H color diamonds, round and ma...
Diamond, Pearl, White Diamond, Platinum
Vintage Cluster 10.65cts Diamond Platinum Flower Ribbon Brooch Pin
Located in Miami, FL
A dance of light and sparkle in a stunning curved 1980's floral-inspired brooch pin. Crafted in solid platinum, composed of high-quality natural diamond (16) round-cut, (12) marquis...
Diamond, Platinum
Platinum 1960's 12.50 Carat Diamond Dangling Cluster Brooch
Located in New York, NY
"This is a lovely 1960's brooch in platinum, mounted with 12.50 carats in diamonds. The diamonds are of various shapes, rounds and baguettes mostly. The lovely layout of the brooch ...
Diamond, Platinum
Platinum 1950's 14 Carat Diamond Cluster Openwork Swirl Brooch
Located in New York, NY
"This botanically inspired 1950's swirl diamond brooch is crafted in solid platinum, mounted with baguette, pear and round cut diamonds of nice white color and clarity. 14 carats in ...
Diamond, Platinum
Stunning Brooch Style Diamond Platinum Ring
Located in Los Angeles, CA
This brooch style ring is composed of platinum and diamonds, Features a 0.25 carat center stone with 66 smaller diamonds accented throughout. A beautiful and stunning timeless design...
Diamond, Platinum
Edwardian Diamond Floral Cluster Brooch Set in Platinum and 18k White Gold
Located in London, England
A beautiful Edwardian old mine cut diamond brooch set in platinum and 18k white gold, circa 1905.
Diamond, White Gold, Gold, 18k Gold, Platinum
1960's Vintage Jade Diamond Platinum Cluster Stickpin
Located in Philadelphia, PA
Stickpin is designed as clustered diamonds with jade cabochons Pear cut jade cabochons measure approximately 7.0 x 5.0 mm With round brilliant cut diamonds weighing in total approx...
Diamond, White Diamond, Jade, Gold, 14k Gold, Yellow Gold, Platinum
Vintage 2.35ct Diamond and Platinum Clip Brooch, circa 1950
Located in Jesmond, Newcastle Upon Tyne
This stunning, fine and impressive vintage diamond cluster brooch has been crafted in platinum.
Diamond, Platinum
Art Deco 1.00 Carat Diamond Pearl Platinum Floral Cluster Stickpin
Located in Philadelphia, PA
Centering a round button pearl measuring approximately 4.0 mm; cream in body color with silvery overtones and excellent luster Surrounded by 1.00 carat of transitional cut diamonds,...
Diamond, Pearl, Platinum
Vivid Diamonds 12 Carat Diamond Cluster Brooch
Located in Miami, FL
Magnificent Vivid Diamonds Cluster Brooch crafted in platinum, showcasing a total of 87 mixed pear shape, baguette, and marquise cut diamonds weighing approximately 12 carats total, ...
Diamond, Platinum
1960s Cluster Diamond Swirl Platinum Pin Brooch
Located in Miami, FL
This botanically inspired swirl diamond brooch is crafted in solid platinum, weighing 20.4 grams and measures 54mm long x 34mm wide. Channel-set with 72 baguette shaped diamonds, wei...
Diamond, Platinum
Platinum 1.75 Inch Flower Cluster Spray Brooch Diamond Leaves and Sapphires
Located in New York, NY
Experience the allure of the Platinum Flower Cluster Spray Brooch with Diamond Leaves and Sapphires and embrace the beauty and elegance it brings to your collection.
Diamond, Sapphire, Blue Sapphire, Gold, 18k Gold, White Gold, Platinum
Sold
W 1.25 in L 1.33 in
5.55 Carats Total Baguette, Marquis and Round Diamond and Platinum Brooch F-G/VS
Located in Scottsdale, AZ
Made of polished platinum, this clustered diamond brooch combines 54 baguette, round and marquis shaped stones for a stunning statement piece.
Diamond, Platinum
Spectacular Diamond Platinum Cluster Brooch
Located in Houston, TX
Spectacular Diamond Cluster Brooch set in Platinum. The fourteen largest stones have GIA certificates.
Diamond, Platinum
Baguette Marquise Round Diamond platinum Cluster Spray Brooch
Located in Greenwich, CT
Diamond cluster spray brooch, set with near-colorless baguette-cut, circular-cut and marquise-shaped diamonds altogether weighing approximately 10.70 total carats (averaging G color/...
Diamond, White Diamond, Platinum
David Webb Platinum Cultured Pearl Cluster Diamond Brooch
By David Webb
Located in Dallas, TX
The brooch is platinum set with 53 cultured pearls and 101 (G color VS Clarity) 4.00ctw round brilliant diamonds.
Cultured Pearl, Diamond, White 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 tiara, crafted in luxurious platinum, is a masterpiece of elegance and refinement....
Diamond, Platinum
Hermès Kelly So Black 35 Noir Boxcalf
By Hermès
Located in Berlin, DE
Hermès Kelly So Black 35 in noir and boxcalf leather with black hardware. The bag had already been in the Hermès Spa and is in a good condition with small marks on the front and back...
Chanel F/W 2014 Supermarket Pink Plaid 14A Fantasy Tweed Jacket Skirt Suit
By Karl Lagerfeld for Chanel, Chanel
Located in Jersey City, NJ
Introducing the highly coveted Chanel Fall/Winter 2014 "Supermarket" pink tweed suit, a true investment piece for fashion collectors. It gained popularity by being worn by A-list cel...
Hermès Bleu Zanzibar Togo Birkin 25 PHW
By Hermès
Located in New York, NY
Listing Title: Hermès Bleu Zanzibar Togo Birkin 25 PHW SKU: 119773 Condition: Pre-owned (3000) Handbag Condition: Mint Condition Comments: Mint Condition. Plastic on hardware. No vis...
$64,000Sale Price|20% Off
David Webb Platinum Diamond And Emerald Panther Pin Brooch
By David Webb
Located in New York, NY
Designed as a crouching panther, entirely pave-set with round brilliant-cut diamonds, with pear-shaped emerald eyes and marquise diamond collar, mounted in platinum, with 18K yellow ...
Diamond, Platinum
2001 Chanel Runway Brown Lambskin Leather Jacket & Pants Set
By Chanel
Located in Scottsdale, AZ
This exquisite 2001 Chanel Runway Brown Lambskin Leather Jacket and Pants Set epitomizes the luxurious craftsmanship and iconic style synonymous with the Chanel brand. Made from prem...
South Sea Pearl And Diamond Cocktail Ring Ribbon Design by Ella Gafter
By Ella Gafter
Located in New York, NY
The South Sea pearl and diamond cocktail ring features a top quality pearl of 18.50mm diameter. The pearl is untreated. It displays a splendid nacre and its natural color and luster ...
White Diamond, South Sea Pearl, Diamond, Pearl, 18k Gold, White Gold
Bulgari Serpenti Necklace in 18k yellow, white gold, emerald and diamonds
By Bulgari
Located in Neguri, Vizcaya
Highly articulated serpenti-shaped Bulgari necklace which sensually coils around the neck exposing its 18k gold scales, the head adorned with round and marquise diamonds and pear-sha...
Diamond, Emerald, 18k Gold, White Gold, Yellow Gold
Christian Dior dickey top 2020
By Christian Dior
Located in SAINT-OUEN-SUR-SEINE, FR
DIOR - (Made in Italy) Openwork black leather dickey top. No size indicated, it fits a 34FR/36FR. 2020 Resort Collection under the artistic direction of Maria Grazia Chiuri. Conditi...
VAN CLEEF & ARPELS Diamond Cosmos Pendant Diamond Necklace
By Van Cleef & Arpels
Located in New York, NY
In the 1950s, the Cosmos collection was created, featuring a unique combination of protection represented by a four-leaf clover and the elegance of a flower. This small pendant, craf...
Diamond, 18k Gold, White Gold
Two Finger Ring South Sea Pearl Tahitian Pearl and Diamond Design by Ella Gafter
By Ella Gafter
Located in New York, NY
The pearl and diamond two-finger ring features a splendid South Sea pearl of 17.8mm diameter, and an equally splendid Tahitian pearl of 17.5mm diameter. The pearls are untreated. The...
White Diamond, Black Pearl, South Sea Pearl, Diamond, Pearl, 18k Gold, W...
South Sea Pearl and Diamond Cuff Bracelet White Gold Design by Ella Gafter
By Ella Gafter
Located in New York, NY
This South Sea pearl and diamond bracelet features seven large pearls separated by seven motifs in white gold. The untreated South Sea pearls measure 16mm in diameter. They display a...
White Diamond, South Sea Pearl, Diamond, Pearl, 18k Gold, White Gold
Rosior one-off Ruby and Diamond "Flower" Brooch set in White Gold
By Rosior
Located in Porto, PT
Rosior by Manuel Rosas Contemporary White Gold "Flower" Brooch set with: - 296 Rubis with 11,53ct, - 16 Diamonds with 0,19ct. Black Rhodium Finnishing. Unique piece accompanied with ...
Diamond, Ruby, Gold, White Gold, Rhodium
19mm South Sea Pearl And Diamond Ring Design by Ella Gafter
By Ella Gafter
Located in New York, NY
The South Sea pearl and diamond cocktail ring features a gem quality pearl of the extraordinary size of 19mm diameter. The pearl is untreated. It displays a splendid nacre and its na...
White Diamond, South Sea Pearl, Diamond, Pearl, 18k Gold, White Gold
【Conchéa】Flamingo Halo Conch Pearl Convertible Pendant Ring — 5.24 ct
By The Pearl Vogue
Located in New York, NY
A jewel created to command the room. At the center rests an extraordinary 5.24 CT conch pearl in an exceptionally vivid flamingo pink hue — displaying crisp, highly visible flame pa...
Diamond, Pearl, White Gold
$91,450
H 0.26 in Dm 0.56 in
Ballerina Interchangeable Earring set Diamond, Sapphire, Emerald & Black Diamonds
By Be Jolie
Located in New York, NY
Limited edition handcrafted interchangeable ballerina style pair of diamond earrings 6.33 Carat total diamond weight. Our timeless earrings are made with exquisite craftsmanship and...
Diamond, Emerald, Blue Sapphire, Black Diamond, Pink Sapphire, 18k Gold,...
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.
Vintage brooches, which refer to decorative jewelry traditionally pinned to garments and used to fasten pieces of clothing together where needed, have seen increasing popularity in recent years.
While jewelry trends come and go, brooches are indeed back on the radar thanks to fashion houses like Gucci, Versace, Dior and Saint Laurent, all of which feature fun pinnable designs in their current collections. Whether a dazzlingly naturalistic Art Nouveau dragonfly, a whimsical David Webb animal, a gem-studded bloom or a streamlined abstract design, these jewels add color and sparkle to your look and a spring to your step.
Given their long history, brooches have expectedly taken on a variety of different shapes and forms over time, with jewelers turning to assorted methods of ornamentation for these accessories, including enameling and the integration of pearls and gemstones. Cameo brooches that originated during the Victorian age are characterized by a shell carved in raised relief that feature portraits of a woman’s profile, while 19th-century micromosaic brooches, comprising innumerable individually placed glass fragments, sometimes feature miniature depictions of a pastoral scene in daily Roman life.
At one time, brooches were symbols of wealth, made primarily from the finest metals and showcasing exquisite precious gemstones. Today, these jewels are inclusive and universal, and you don’t have to travel very far to find an admirer of brooches. They can be richly geometric in form, such as the ornate diamond pins dating from the Art Deco era, or designer-specific, such as the celebrated naturalistic works created by Tiffany & Co., the milk glass and gold confections crafted by Trifari or handmade vintage Chanel brooches of silk or laminated sheer fabric. Chanel, of course, has never abandoned this style, producing gorgeously baroque CC examples since the 1980s.
Brooches are versatile and adaptable. These decorative accessories can be worn in your hair, on hats, scarves and on the lower point of V-neck clothing. Pin a dazzling brooch to the lapel of your blazer-and-tee combo or add a cluster of smaller pins to your overcoat. And while brooches have their place in “mourning jewelry,” in that a mourning brooch is representative of your connection to a lost loved one, they’re widely seen as romantic and symbolic of love, so much so that a hardcore brooch enthusiast might advocate for brooches to be worn over the heart.
Today, find a wide variety of antique and vintage brooches for sale on 1stDibs, including gold brooches, sapphire brooches and more.
The care that went into crafting this jewel, with its lifelike carved petals and diamond accents, matches the sentiment it represents.
For starters, it is one of the jewelry designer’s most celebrated works.
Though it sparkles with more than 27 carats of diamonds, this multifaceted gem delivers more than just dazzle.
Stellene Volandes takes us on a glittering, engrossing tour through the centuries.
From cameos to cigar bands, here are the looks on our radar this season.
The philanthropist and heiress was an avid jewelry collector, and her trove of Jean Schlumberger creations embodies the love of nature she shared with the famed designer.