Skip to main content

Early 1800s Brooches

to
22
11
8
7
6
11
11
4
2
1
82
2,335
11,737
3,487
543
278
497
606
656
805
930
553
1,410
654
61
14
13
7
6
5
2
1
10
8
4
26
1
14
13
Period: Early 1800s
Pearls, Ruby, 18 Karat Rose Gold Brooch.
Located in Marcianise, Marcianise (CE)
Retrò brooch in 18 kt rose gold structure mounted with a central ruby surrounded by little pearls. Ruby 0.30 ct Pearls 0.32 gr Total Weight 4.00 gr RF +GRAA For any information, f...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Pearl, Ruby, 18k Gold, Rose Gold

Cameo of the Last Supper Engraved Brooch and Pendant
Located in Berkeley, CA
This beautiful cameo brooch/ pendant depicts the Last Supper in great detail. A true cameo is a miniature sculpture in relief, carved from a single shell. Travelers touring Europe he...
Category

American Late Victorian Antique Early 1800s Brooches

Materials

14k Gold

Pearl, Rubies, Diamonds, 12 Karat Rose Gold and Silver Brooch.
Located in Marcianise, Marcianise (CE)
Retrò flower brooch in 12 kt rose gold and silver structure mounted with a central pearl surrounded by leaves studded with rubies and diamonds, Diamonds 0.40 ct Rubies 0.30 ct Pearl ...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Diamond, Pearl, Ruby, Rose Gold, Silver

Victorian 14k/Sterling Silver Diamond, Pearl, and Ruby Fly Pin
Located in Narberth, PA
An absolutely gorgeous multi-stone bug pin from the Victorian (ca1880) era! This incredible piece is crafted in 18k gold and sterling silver, and depicts an open winged bug. The wing...
Category

Antique Early 1800s Brooches

Materials

Pearl, Gold, 18k Gold, Sterling Silver

Antique Vintage Georgian Rose Cut Diamond Gold Silver Large Star Pin Brooch
Located in Southampton, PA
Antique Vintage Estate 18k Gold And Silver Rose Cut Diamond Large Star Pin Brooch. Authentic antique vintage from Georgian time period 18k Gold and Silver Pin Brooch. An exquisite An...
Category

American Antique Early 1800s Brooches

Materials

Diamond, Rose Gold, Gold, Silver

Georgian Rose Cut Diamond Floral Brooch
Located in London, GB
Here we have an exquisite Georgian brooch adorned with shimmering rose-cut diamonds. The intricate design features a harmonious arrangement of stones, each set in silver atop a gold ...
Category

Georgian Antique Early 1800s Brooches

Materials

Diamond, Gold, Silver

Georgian Garnet and 18 Carat Gold Cannetille Brooch
Located in Chipping Campden, GB
This gorgeous 18 Carat gold cannetille brooch holds a shiny red garnet stone. The detail surrounding this stone is exquisite. This piece could be either a brooch or a pendant. Face...
Category

British Georgian Antique Early 1800s Brooches

Materials

Garnet, Gold

Green Stones, Pearls, 18 Karat Gold and 12 Karat Gold Brooch.
Located in Marcianise, Marcianise (CE)
Retrò brooch in 18 kt gold and 12 kt gold structure mounted with little pearls and three green stones. Pearls 0.12 gr Green Stones 0.10 gr Total Weight 2.70 gr RF +GGFU For any inf...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Pearl, Gold, 18k Gold

Green Stone, Pearls Yellow Gold Brooch.
Located in Marcianise, Marcianise (CE)
Retrò brooch in 9 kt yellow gold structure mounted with a green stone and pearls. Stone 0.05 gr Pearls 1.00 gr Total Weight 9.50 gr RF +UFGH For any information, feel free to conta...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Pearl, 9k Gold, Yellow Gold

Pearls, 18 Karat Rose Gold Retrò Brooch.
Located in Marcianise, Marcianise (CE)
Retrò brooch in 18 kt rose gold structure mounted with pearls. Pearls 1.30 gr Total Weight 4.70 RF +UUUH For any information, feel free to contact the seller through the message ce...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Pearl, 18k Gold, Rose Gold

Rare Antique Silesian Wire Brooch, circa 1805
Located in Baltimore, MD
Silesian wire jewelry was crafted by hand at the same time as Berlin Iron, somewhere between 1805-1812. The craft originated from gunsmiths and armor wor...
Category

Polish Georgian Antique Early 1800s Brooches

Materials

Mixed Metal

Stones, Pearls, Rose Gold Brooch.
Located in Marcianise, Marcianise (CE)
Retrò brooch in 9 kt rose gold structure mounted with pearls and three green stones. Stones 0.15 gr Pearls 0.15 gr Total Weight 2.90 gr RF +CFI For any information, feel free to co...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Pearl, 9k Gold, Rose Gold

Emeralds, Pearls, Rose Gold Brooch
Located in Marcianise, Marcianise (CE)
Retrò brooch in 9 kt rose gold structure mounted with little emeralds and little pearls. Pearls 0.10 gr Emeralds 0.08 ct Total Weight 3.30 gr RF +EFU For any information, feel free...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Emerald, Pearl, 9k Gold, Rose Gold

Antique Georgian 12k Gold Silver Diamond Ruby Floral Branch Vine Pin Brooch
Located in Montclair, NJ
--Stone(s):-- Numerous Natural Genuine Diamonds - Rose Cut - Pave Set - 2-3ctw (approx.) (3) Natural Genuine Rubies - Round Cut - Pave Set - Pinkish Red Color Material: 12k Yellow G...
Category

Georgian Antique Early 1800s Brooches

Materials

Diamond, Ruby, Gold, Yellow Gold, Silver

Exquisite Victorian 14K Yellow Gold Filigree Cameo with Diamond Pendant/Brooch
Located in New York, NY
This exquisite Victorian Cameo surrounded with 14K yellow gold filigree is accented with a .10 carat diamond pendant delicately hanging on necklace within the cameo. This wond...
Category

American Victorian Antique Early 1800s Brooches

Antique Vintage Estate Art Deco Diamond Platinum Large Pin Brooch
Located in Southampton, PA
Platinum Antique Vintage Estate Diamond Large Pin Brooch. A magnificent Vintage Estate Art Deco Platinum Diamond Brooch, showcasing timeless elegance. This handcrafted masterpiece ...
Category

American Antique Early 1800s Brooches

Materials

Diamond, Platinum

Georgian Topaz and Pearl Cluster Brooch
Located in London, GB
A Georgian golden topaz and pearl cluster brooch, the cushion-cut topaz measuring approximately 13 x 13 mm, yellow gold cutdown collet-set to the ...
Category

British Georgian Antique Early 1800s Brooches

Materials

Pearl, Topaz, 18k Gold, Yellow Gold

Georgian Era Silver Brooch Pearl Diamond 9k Gold Antique Jewelry
Located in Beverly Hills, CA
A delicate silver brooch from the Georgian era, featuring a pearl, antique cut diamonds and a 9k gold pin. Designed as a flower, the brooch has two old mine cut diamond “buds” and a pearl blooming “floret.” The leaves are encrusted with the old mine and Old European cut diamonds. The brooch carries beautiful, nature inspired flowing lines. The contrasting dark silver background makes the pearl and diamonds pop. This pearl brooch has a distinct Georgian era’s feel that will instantly transform your outfit to a sophisticated one. This antique brooch is made of silver with the pin made of 9 karat yellow gold. It features a teardrop shaped creamy white pearl (9.8 x 7.6 x 7.7 mm), old mine, Old European and single cut diamonds (J-L color, VS clarity, approximately 2.30 carats total weight including two diamonds of 0.80-carat each). The Georgian brooch measures 2 ¼” x 1 1/8” (5.8 x 2.9 cm) and weighs 8.1 grams. About Georgian Jewelry: The Georgian period, named after the reigns of the four King Georges of England (1714-1830), is a dynamic and evolving era for jewelry design. Early Georgian jewelry often reflected the Baroque and Rococo styles, with elaborate designs and intricate details. As the period progressed, the influence of Neoclassicism became more pronounced, with motifs inspired by ancient Greece and Rome becoming popular. Jewelry from this time was typically handcrafted, as mass production techniques had not yet been developed. This means that each piece from the Georgian era is unique, with variations that reflect the individual taste of the jeweler. Georgian jewelers employed a variety of materials. Diamonds were often set in silver, as it was believed to enhance their sparkle, while colored gemstones were typically set in gold. The use of paste, a type of leaded glass, was also common for simulating the appearance of precious stones. Designs were rich and varied, as cultural influences of the time came from symbolism and nature. For example, anchors representing hope or snakes symbolizing eternity. Cameos and intaglios, with carved gemstones or shells, were highly prized. Girandole earrings featuring a central element with three dangling components came from the Georgian era. Jewelry in that time was often designed for specific occasions. For instance, mourning jewelry was crafted to commemorate loved ones, featuring somber designs and materials like jet or black enamel. Such gifts as sentimental jewelry, with lover’s eye miniatures or lockets containing hair, were widely popular. We love Georgian jewelry due to its rarity and the craftsmanship it represents. Its designs provide a glimpse into the fashion and culture of 18th and early 19th-century Europe. About Pearl Jewelry: Pearls have a special place in jewelry design. These organic gems have always been associated with a classy, refined style. Today wearing pearls means having a great taste and the ability to see its beauty. Saltwater pearl jewelry...
Category

Unknown Antique Early 1800s Brooches

Materials

Diamond, Pearl, Yellow Gold, 9k Gold, Silver

Georgian French Ruby Diamond 18 Karat Yellow Gold Antique Snake Knot Brooch
Located in Philadelphia, PA
Designed as a stylized swirling knotted snake suspending an apple charm from mouth Gold body is deeply grooved with scales and accented by silver-topped head Accented by grooved faci...
Category

Georgian Antique Early 1800s Brooches

Materials

Diamond, Ruby, Gold, 18k Gold, Yellow Gold, Silver

Antique Georgian 10K Yellow Gold Silver Top Diamond Floral Stick Pin
Located in Great Neck, NY
Beautiful Antique Georgian 10K Yellow Gold Silver Top Diamond Floral Stick Pin. This beautiful stick pin is crafted in 10k yellow gold and silver. The pin features a beautiful floral...
Category

Antique Early 1800s Brooches

Materials

Diamond, Gold, 10k Gold, Yellow Gold, Silver

Antique Georgian Silver Old Cut Paste and Pearl Monkey Pin
Located in Great Neck, NY
Beautiful Antique Georgian Silver Old Cut Paste and Pearl Monkey Pin. This gorgeous Georgian pin is crafted in silver. This pin features a monkey playfull...
Category

Georgian Antique Early 1800s Brooches

Materials

Pearl, Silver

Georgian miniature and diamond brooch, French, circa 1800.
Located in London, GB
Georgian miniature and diamond brooch. Set with a fine picture of a young country girl with a boy in a closed back rubover setting, bordered by a single row of cushion shape rose cut...
Category

Victorian Antique Early 1800s Brooches

Materials

Diamond, Rose Gold, Silver

Georgian Flat Cut Garnet and Gold Mourning Brooch
Located in Chipping Campden, GB
This stunning brooch would also make a stunning pendant! The hair behind the locket front is surrounded by beautiful flat cut garnets, typical of the Georgian period...
Category

British Georgian Antique Early 1800s Brooches

Materials

Garnet, Gold

Georgian- Diamond “Thistle” Brooch
Located in Vero Beach, FL
Antique Stunner! Georgian Gold & Silver Diamond Brooch Brooch measures 2 1/4 ” wide x 2 ” height. The brooch has One Hundred Thirty-One -131 Old Mine, Rose Cuts and Old European Diamonds weighing from 0.02 carat to 0.65 carat. Total diamond weight is approx. 3.00 + Carats. There is One pin on the back, a “C’ clasp with frame safety to keep it in . No maker’s stamps on brooch. Age: Georgian Period. The Georgian era is a period in British history from 1714 to c. 1830-37, named after the Hanoverian kings George I, George II, George III and George IV. Very good condition. Brooch weighs 20.25 grams. Arrives in an antique pin box...
Category

Unknown Georgian Antique Early 1800s Brooches

Materials

Diamond, Mixed Metal

Antique Georgian Gold Silver Diamond Flying Large Peacock Bird Pin Brooch
Located in Montclair, NJ
--Stone(s):-- Numerous Natural Genuine Diamonds - Old Rose Cut - Pave Set - 3-5ctw (approx.) (1) Pink Stone - Round Cut - Pave Set (6) Natural Genuine Sapphires - Round Cut - Pave Se...
Category

Georgian Antique Early 1800s Brooches

Materials

Diamond, Sapphire, Gold, 14k Gold, Yellow Gold, Silver

Enamel, 14 Karat Yellow Gold Retrò Brooch
Located in Marcianise, Marcianise (CE)
Beautiful retrò brooch in 14 kt yellow gold structure with enamel representing a lady. This brooch was totally handmade by Italian master goldsmiths and it is in perfect conditions. ...
Category

Italian Retro Antique Early 1800s Brooches

Materials

Gold, 14k Gold, Enamel

Antique Victorian 14K Yellow Gold Japanese Carved Hyottoko Stickpin
Located in Great Neck, NY
Beautiful Antique Victorian 14K Yellow Gold Japanese Carved Bone Hyottoko Stickpin. This incredible stick pin is crafted in 14k yellow gold. The p...
Category

Victorian Antique Early 1800s Brooches

Materials

Gold, 14k Gold, Yellow Gold

Related Items
Vintage style rose cut Diamond garnet Sterling silver Bee Brooch pin
Located in Delhi, DL
This Gorgeous Garnet Diamond brooch is a unique handcrafted art. It brings back the memory of the Victorian era. It has been crafted in 925 sterl...
Category

Asian Early Victorian Early 1800s Brooches

Materials

Diamond, Sterling Silver

14k Rose Gold Ruby and Diamond Brooch
Located in Hicksville, NY
Metal Type: 585 (14K Rose Gold) [Hallmarked, and Tested] Weight: 4.9 grams Ruby Details: Weight: .75ct, total Type: Synthetic Cut: Round Color: Pinkish Red Diamond Details: Natural D...
Category

Unknown Edwardian Antique Early 1800s Brooches

Materials

Diamond, Ruby, Rose Gold

1950s Diamond and Pearl Yellow and Rose Gold Brooch
Located in Jesmond, Newcastle Upon Tyne
A stunning vintage 1950s 0.90 carat diamond and cultured pearl, 18 karat yellow and rose gold brooch; part of our diverse vintage jewelry and estate jewelry collections. This stunning, fine and impressive pearl and diamond brooch has been crafted in 18k yellow and rose gold. The spray design has a tied ribbon to hold the two flowers stems and leaves together. The two-tone flower-heads are ornamented with a bezel set 0.47Ct and 0.43Ct transitional modern brilliant round cut diamond. The design is embellished with three cultured pearls, varied in size and shape. The brooch secures to the reverse with a hinged pin and push fit clasp. This pearl and diamond spray brooch has been independently tested using state of the art technology (Niton XL2 Analyzer) and verified as 18k gold. The brooch is supplied with two independent diamond grading certificates for the feature diamonds in addition to an independent diamond grading report card for the pearls. Images do not always reflect the true color and brilliance of gemstones and diamonds. The video however provides a truer representation of the actual color and showcases each stone. Condition This stunning vintage gemstone brooch...
Category

Vintage Early 1800s Brooches

Materials

Diamond, Pearl, Rose Gold, Yellow Gold

1950s Diamond and Pearl Yellow and Rose Gold Brooch
1950s Diamond and Pearl Yellow and Rose Gold Brooch
$4,448
H 0.24 in W 2.52 in L 2.89 in
Vintage Shell Last Supper Cameo Brooch 9k Yellow Gold
Located in Jesmond, Newcastle Upon Tyne
An exceptional, fine and impressive, large vintage shell and 9 karat yellow gold cameo brooch depicting the Last Supper; part of our cameo jewelry collections. This exceptional and large vintage brooch has been crafted in 9k yellow gold. The oval shaped frame is ornamented to the center with an exceptional and finely carved shell cameo depicting the Last Supper. The undulating millegrain decorated collet setting to the shell panel is encompassed with two rope twist decorated borders. This vintage cameo brooch secures to the reverse with a hinged pin and safety clasp fastening. This vintage brooch is hallmarked to the rim with the 9 karat gold mark (9, 375), the Birmingham Assay Office mark (anchor) and the date letter for 1974 (Z). This exceptional Last Supper cameo...
Category

Vintage Early 1800s Brooches

Materials

Yellow Gold

Antique Victorian 14K Yellow Gold and Silver Diamond Briolette Torch Stick Pin
Located in Great Neck, NY
Beautiful Antique Victorian 14K Yellow Gold and Silver Diamond Briolette Torch Stick Pin. This incredible antique Victorian diamond briolette stick pin is crafted in 14k yellow gold ...
Category

Victorian Antique Early 1800s Brooches

Materials

Diamond, Gold, 14k Gold, Yellow Gold, Silver

Opal, Ruby with Brown Diamond Mouse Brooch Set in 18 Karat Rose Gold Settings
Located in Bangkok, TH
Opal 2.45 carats, Ruby 0.10 carat with Brown Diamond 3.26 carats Brooch set in 18 Karat Rose Gold Settings Width: 2.0 cm Length: 4.2 cm "Since we first opened doors in 1980 our s...
Category

Thai Early 1800s Brooches

Materials

Brown Diamond, Opal, Ruby, 18k Gold, Rose Gold

Vintage style Rose cut Diamond Sterling silver ruby emerald Pearl Bee Brooch pin
Located in Delhi, DL
This Gorgeous Queen Bee Diamond Sapphire brooch is a unique handcrafted art. It brings back the memory of the Victorian era. It has been crafted in 925 sterling silver with 18K Gold ...
Category

Asian Early Victorian Early 1800s Brooches

Materials

Diamond, Pearl, Sterling Silver

French 1950s Ruby Diamond 18 Karat Rose Gold Flower Retro Clip Brooch
Located in Poitiers, FR
Brooch in 18 karat rose gold, eagle's head hallmark. Feminine antique brooch, it represents a flower with slightly bent petals whose heart is an antique cushion-cut diamond and the p...
Category

French Retro Vintage Early 1800s Brooches

Materials

Diamond, White Diamond, Ruby, Gold, 18k Gold, Rose Gold

Antique Natural Pearl and Rose Cut Diamond Silver on Gold Floral brooch, c1870 s
Located in London, GB
This gorgeous Victorian brooch has been crafted in silver on gold, typical of its period. The floral designed piece is beautifully set with 6 natural Saltwater pearls measuring betwe...
Category

Victorian Antique Early 1800s Brooches

Materials

Diamond, Natural Pearl, South Sea Pearl, Gold, Silver

Sterling Silver Pearl Wreath Pin
Located in Scottsdale, AZ
Designer: custom design Material: sterling silver Dimensions: pin measures 31.5 x 34.5mm Weight: 6.78 grams
Category

Early 1800s Brooches

Materials

Pearl, Sterling Silver

Sterling Silver Pearl Wreath Pin
Sterling Silver Pearl Wreath Pin
$400
Dm 1.25 in L 1.36 in
.12 Carat Diamond Pearl Rose Gold Star Brooch Pendant
Located in Stamford, CT
Turn of the century, Antique cushion cut diamond natural pearl brooch pendant. 1 old mine cut center diamond set in 14k rose gold with 66 white and gray accent pearls. circa 1900's ...
Category

Early 1800s Brooches

Materials

Diamond, Pearl, Gold, 14k Gold, Rose Gold

Vintage Silver Shell Cameo Brooch Pendant Brooch
Located in West Palm Beach, FL
This Vintage Silver Shell Cameo Brooch Pendant is a versatile and elegant piece that reflects timeless charm and craftsmanship. Hand-carved from genuine shell, the cameo features a b...
Category

Victorian Early 1800s Brooches

Materials

Silver

Vintage Silver Shell Cameo Brooch Pendant Brooch
Vintage Silver Shell Cameo Brooch Pendant Brooch
$275
W 0.85 in D 0.5 in L 1.25 in
Previously Available Items
Belle Epoque Platinum GIA Blue Moonstone Sapphire Diamond Brooch Pendant
Located in Montclair, NJ
--Stone(s):-- (1) Natural Genuine Blue Moonstone - Pierced Carving Oval Shape - Bezel Set - White Color ** See Certification Details Below for Complete Info ** (1) Natural Genuine Di...
Category

Belle Époque Antique Early 1800s Brooches

Materials

Diamond, Moonstone, Sapphire, Platinum

Old cut 18th century diamond pin
Located in New York, NY
A stunning diamond pin with about 1.50 carat center stone. It's a true old brooch from the 18th century. Fine piece of you want to wear . This can not be recreated
Category

European Victorian Antique Early 1800s Brooches

Materials

Diamond

Antique Belle Epoque Platinum Sapphire Diamond Milgrain Work Pin Brooch
Located in Montclair, NJ
--Stone(s):-- (8) Sapphires - Custom Half Moon Cut - Channel Set - Royal Blue Color Numerous Sapphires - Calibre Cut - Channel Set - Royal Blue Color Sapphires appear to be genuine ...
Category

Belle Époque Antique Early 1800s Brooches

Materials

Diamond, Sapphire, White Gold, Platinum

Antique Menorah Diamond Brooch - 14K Yellow Gold
Located in New York, NY
Illuminate your style with our Menorah Diamond Brooch/Pin. This finely crafted piece, made from elegant 14K yellow gold and weighing a delicate 1.85 grams, features a beautifully det...
Category

Retro Antique Early 1800s Brooches

Materials

Gold, 14k Gold, Yellow Gold

Victorian Diamond Opal 14 Karat Gold Clover Stickpin
Located in Philadelphia, PA
Stickpin is designed as a clover with three prong set 3.5 mm round cabochon opals. White in body color with strong spectral play of color. Accented by a prong set old European cut di...
Category

Victorian Antique Early 1800s Brooches

Materials

Diamond, Opal, Gold, 14k Gold, Yellow Gold

Georgian Flat Cut Garnet Silver and Gold Sepia Pendant
Located in Chipping Campden, GB
This stunning pendant is set with flat cut garnets an a gorgeous portrait at the centre. Modelled in silver and backed with Gold. Brooch Dimensions: 44x31mm Weight: 12.2g
Category

British Georgian Antique Early 1800s Brooches

Materials

Garnet, Gold, Silver

Antique Large Crescent Moon Paste Brooch c1880s
Located in Wilmslow, GB
A stunning large antique crescent paste brooch dating to the Victorian era. Featuring a crescent design pin, pave set with adorable light catching pastes, each one claw set. Victoria...
Category

Antique Early 1800s Brooches

Antique 1800 Medusa Miniature Painting Gold Silver Diamond Snake Eternity Symbol
Located in Munich, Bavaria
This beautiful gold mounted painting of a medusa's head has been painted on porcelain around 1800. The snake with it's silverset diamond eyes is biting it's own tail, a symbol for et...
Category

Italian Empire Antique Early 1800s Brooches

Materials

Diamond, Gold, Silver

Victorian 0.45 Carat Diamond Horseshoe Stick Pin, circa 1880s
Located in London, GB
A delicate horseshoe sparkles with diamonds in this Victorian stick pin brooch. Nine old cut diamonds are set into the horseshoe. They are 0...
Category

Unknown Victorian Antique Early 1800s Brooches

Materials

Diamond, 18k Gold

Georgian Flat Cut Almandine Garnet, Pearl and Gold Mourning Brooch
Located in Chipping Campden, GB
This stunning brooch would also make a stunning pendant! The hair behind the locket front is surrounded by beautiful seed pearls and flat cut almandine garnets, typical of the Georgi...
Category

British Georgian Antique Early 1800s Brooches

Materials

Garnet, Pearl, Gold

Late Georgian Garnet and Pearl Gold Brooch
Located in Chipping Campden, GB
This stunning brooch is in lovely condition and holds a large central garnet and is then surrounded by a halo of pearls which are then surrounded by more garnets! Brooch Dimensions:...
Category

British Georgian Antique Early 1800s Brooches

Materials

Garnet, Pearl, Gold

Antique Victorian 14 Karat Gold Platinum Old Mine Cut Diamond Horse Shoe Pin
Located in Great Neck, NY
Stunning Victorian horse shoe pin with old mine cut diamonds. Item #P0098 Metal: 14K Yellow Gold and Platinum Top Weight: 3.7 Grams Total Diamond We...
Category

Victorian Antique Early 1800s Brooches

Materials

Diamond, Platinum