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Sg Jewelry Mark

Cartier Art Deco Carved Emerald and Diamond Jabot Pin, Circa 1925
By Cartier
Located in London, GB
VS approximately Signed "Cartier Paris" "BTE SG SG", and inscribed with the serial number K324 G
Category

Vintage 1920s French Art Deco Brooches

Materials

Diamond, Emerald, Platinum

Vintage Cartier Stirrup Cufflinks Twisted 18 Karat Yellow Gold, Circa 1950
By Cartier
Located in London, GB
yourself! Signed 'Cartier' 'BREVETE SG DG' Serial no. '05811' With assay marks for France Dimensions
Category

Vintage 1950s French Retro Cufflinks

Materials

Gold, 18k Gold, Yellow Gold

Seidengang 18k Yellow Gold Tourmaline Amethyst Diamond Tassel Earrings, 19 Gram
By SeidenGang
Located in Plainsboro, NJ
Fabulous statement earrings by SG /SEIDENGANG made in solid 18kt yellow gold with Heart shape
Category

Vintage 1980s American Victorian Drop Earrings

Materials

Amethyst, Diamond, Tourmaline, 18k Gold, Yellow Gold

SeidenGang Etruscan Double Necklace In 18Kt Yellow Gold With VS Diamonds
By SeidenGang
Located in Miami, FL
). Hallmarks: Stamped with the maker's mark, the mark for the assay of the gold and signed, "SG 18 KT
Category

1990s North American Etruscan Revival Chain Necklaces

Materials

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

SeidenGang Long Drop Etruscan Earrings in 18Kt Yellow Gold with VS Diamonds
By SeidenGang
Located in Miami, FL
Elegant pair of drop earrings designed by Seidengang. A vintage early pair, made by the jewelry
Category

Vintage 1960s American Etruscan Revival Drop Earrings

Materials

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

SeidenGang Etruscan Long Drop Earrings In 18Kt Gold With 15.76 Cts In Tourmaline
By SeidenGang
Located in Miami, FL
with the maker's mark, the hallmark for the assay of the gold and signed, "SG 18 KT.". SeidenGang, was
Category

Vintage 1980s American Etruscan Revival Drop Earrings

Materials

Tsavorite, Tourmaline, Gold, 18k Gold, Yellow Gold

SeidenGang Roman Revival Classic Earrings In 18Kt Yellow Gold With VS Diamonds
By SeidenGang
Located in Miami, FL
x 1.14 Inches). Stamped, with the maker's mark, the hallmark for the gold assay and signed, "SG
Category

Vintage 1980s American Etruscan Revival Clip-on Earrings

Materials

Diamond, White Diamond, 18k Gold, Yellow Gold

SeidenGang 18K Yellow Gold and Diamond Cherub Playing Instrument Intaglio Ring
By SeidenGang
Located in Palm Beach, FL
This tailored and whimsical 18K yellow gold SeidenGang designer ring features a fanciful cherub playing an ancient aulos wind instrument, in intaglio form. Flanking this central moti...
Category

Late 20th Century American Classical Greek Fashion Rings

Materials

Diamond, 18k Gold, Yellow Gold

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SeidenGang 18K Yellow Gold and Diamond Cherub Playing Instrument Intaglio Ring
By SeidenGang
Located in Palm Beach, FL
This tailored and whimsical 18K yellow gold SeidenGang designer ring features a fanciful cherub playing an ancient aulos wind instrument, in intaglio form. Flanking this central moti...
Category

Late 20th Century American Classical Greek Fashion Rings

Materials

Diamond, 18k Gold, Yellow Gold

Cartier France 18K Gold Diamond Rose Flowering Brooch and Earrings Set
By Cartier
Located in Palm Springs, CA
An 18 karat gold and diamond rose flowering brooch and matching earrings created by Cartier of France. The set has a Florentine finish to the petals with 15 full cut diamonds in the ...
Category

Vintage 1960s French Modernist Brooches

Materials

Diamond, 18k Gold, Gold

Platinum Art Deco 8.5ct Diamond Bracelet with Synthetic Sapphires '#J4561'
Located in Big Bend, WI
Platinum Art Deco 8.5ct Diamond Bracelet with Synthetic Sapphires (#J4561) Antique platinum Art Deco diamond bracelet featuring 8.5 carats of diamonds accented by calibre cut synthe...
Category

Early 20th Century Art Deco Tennis Bracelets

Materials

Diamond, Platinum

Cartier Trinity Diamond Hoop Earrings
By Cartier
Located in Napoli, Italy
Cartier Trinity Diamond Hoop Earrings, each of three interwoven half hoops in 18ct yellow gold and set with five round brilliant diamonds to a post and hinge fitting and presented in...
Category

Late 20th Century Hoop Earrings

Materials

Diamond, Gold, 18k Gold

Link Chain Necklace in 18K Yellow Gold
Located in Houston, TX
Chain necklace in 18K yellow gold with highly polished double link chain measuring 32 inches long and 5/16 inches wide.
Category

Late 20th Century Unknown Link Necklaces

Materials

18k Gold, Yellow Gold

Link Chain Necklace in 18K Yellow Gold
Link Chain Necklace in 18K Yellow Gold
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W 0.32 in L 32 in
Mid-20th Century Italian Etruscan Revival Charm Bracelet- 8 Charms
Located in Palm Beach, FL
This lovely 18K Yellow Gold bracelet, itself created in Verona, has mounted to it eight wonderful and large Etruscan Revival charms measuring from 1 1/4 inches to 1 1/2 inches, reple...
Category

Mid-20th Century Italian Charm Bracelets

Materials

Multi-gemstone, 18k Gold

Vintage Cartier Full Diamond Love Hoop Earrings
By Cartier
Located in London, GB
A classic pair of vintage Cartier diamond Love hoop earrings set in 18k white gold. The earrings are set in the iconic Cartier Love design, a firm favourite of many! The earrings ar...
Category

Early 2000s Modern Hoop Earrings

Materials

Diamond, 18k Gold, White Gold

 Vintage Cartier Full Diamond Love Hoop Earrings
 Vintage Cartier Full Diamond Love Hoop Earrings
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W 0.24 in L 0.71 in
Cartier Santos-Dumont Brushed metal de metal rollerball pen
By Cartier
Located in Toronto, CA
Cartier Santos-Dumont Brushed metal cap, black precious resin composite Roller Ball Pen Up For Bidding Cartier Santos-Dumont roller ball pen. Brushed metal cap, black composite bod...
Category

21st Century and Contemporary German Desk Accessories

Victorian Beautiful Antique Emerald and Diamond Hinged Bangle, Circa 1890s
Located in London, GB
A beautiful late Victorian emerald and diamond bangle c.1890s, designed as a graduated row of eleven clusters, the largest in the centre and tapering to each side, each set with an e...
Category

Antique Late 19th Century British Victorian Bangles

Materials

Diamond, Emerald, 18k Gold, Silver

Spanish Colonial 1785 Dangle Earrings 17kt Gold Silver with Diamonds and Emerald
Located in Miami, FL
Spanish Colonial antique dangle Iberian earrings. Exceptionally rare antique pair created in Spain during the Spanish Colonial period, circa 1785. We are sure these dangle drop earr...
Category

Antique 1780s Spanish Baroque Dangle Earrings

Materials

Diamond, White Diamond, Emerald, Gold, 18k Gold, Yellow Gold, Silver

Cartier Antique Diamond Bow Brooch, circa 1910
By Cartier
Located in London, GB
Cartier antique diamond bow brooch. Set to centre with a cushion shape old mine diamond in an open back millegrain setting with a weight of 0.15 carats, further adorned by eighty six...
Category

Vintage 1910s Brooches

Materials

Diamond, Platinum

Cartier Anchor Chain Necklace
By Cartier
Located in New York, NY
Created in the late 20th century, this 18K gold anchor chain necklace by Cartier is composed of yellow gold anchor chain links. This casual, contemporary piece is a classic form with...
Category

Late 20th Century French Chain Necklaces

Materials

Gold, 18k Gold, Yellow Gold

Cartier Anchor Chain Necklace
Cartier Anchor Chain Necklace
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L 23.625 in
Certified Sleeping Beauty Blue Turquoise Necklace in 18Kt Gold 3.21 Cts Diamonds
Located in Miami, FL
A sleeping beauty blue turquoise necklace. Beautiful and elegant contemporary necklace composed by 39 calibrated round beads of 10 mm x 10 mm carved from natural blue turquoises fro...
Category

21st Century and Contemporary American Contemporary Beaded Necklaces

Materials

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

Cartier Paris Retro Ruby and Sapphire Gold Double Lipstick
By Cartier
Located in New York, NY
Cartier Double Headed Lipstick Holder This accessory has two heads that can hold lipstick and 2 carved gemstones (ruby and sapphire) all set in 18k yellow gold. Signed Cartier Paris,...
Category

20th Century French Artist Vanity Items

Materials

Ruby, Sapphire, Gold, 18k Gold

Cartier Art Deco Gold Fountain Pen
By Cartier
Located in New York, NY
Rare 18K yellow gold fountain pen by Cartier, circa 1930s. It features a platinum nib and stylish design. Twist-off cap. Beautiful workmanship and great for any desk or as a gift. H...
Category

Vintage 1930s Desk Accessories

Materials

18k Gold

Cartier Art Deco Gold Fountain Pen
Cartier Art Deco Gold Fountain Pen
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Dm 0.63 in L 5.5 in
Angela Cummings 1989 Brooch in 18kt Yellow Gold with 3.76 Ctw in Green Sapphires
By Angela Cummings
Located in Miami, FL
Fruity brooch designed by Angela Cummings. Fantastic and unusual brooch, created by Angela Cummings in New York city, back in the 1997. This brooch has been crafted in the shape of ...
Category

1990s American Modern Brooches

Materials

Sapphire, Green Sapphire, Gold, 18k Gold, Yellow Gold

Recent Sales

Seidengang Athena Diamond Gold Platinum Hoop Earrings
By SeidenGang
Located in Lambertville, NJ
in VS/G diamonds. Earrings measure 22mm x 20mm. Marked: SG mark, Plat, 18k. Weight is 27.7 grams.
Category

Late 20th Century American Hoop Earrings

Materials

Diamond, Gold, 18k Gold, Platinum

Bvlgari Diagono Chronograph 2-Tone 18 Karat Gold and Stainless Steel Watch
By Bulgari
Located in New York, NY
Bvlgari Diagono Chronograph 2-Tone 18K Yellow Gold & Stainless Steel Automatic Mens Watch CH 40 SG
Category

21st Century and Contemporary Wrist Watches

Wide Georgian Blue Enamel Memorial Ring
Located in New York, NY
rich yellow gold. Fully English hallmarked: 'SG' makers mark, 18k gold, London 1821. The ring is
Category

Antique 1820s British Georgian More Rings

Materials

18k Gold

Seidengang Athena Diamond Gold Platinum Earrings
By SeidenGang
Located in Lambertville, NJ
VS/G diamonds. Earrings measure 23mm x 18mm. Marked: SG mark, Plat, 18k. Weight is 17 grams.
Category

Vintage 1980s American Clip-on Earrings

Materials

Diamond, Gold, Platinum

Concord Men's Two-Tone Nine / Quartz Mariner SG Watch 15 81 614 V13
By Concord Watch
Located in Sherman Oaks, CA
Concord Men's Two-Tone Nine / Quartz Mariner SG Watch 15 81 614 V13 Movement #959001 Case #15 81
Category

Early 2000s Swiss Modern Wrist Watches

Materials

Stainless Steel

18 Karat Yellow Gold Diamond Emerald Ruby Rabbit Brooch, 1960s after Kutchinsky
Located in Zurich, CH
mark: SG Assay mark: 750, French marks
Category

Vintage 1960s French Modern Brooches

Materials

Diamond, Emerald, Ruby, Gold, 18k Gold, Yellow Gold

Seidengang Tourmaline and Gold Bracelet
By SeidenGang
Located in Litchfield, CT
: 23.6 grams STONES: .50 carats total weight tourmaline HALLMARKS: 18k and SG maker's mark for
Category

1990s American Link Bracelets

Materials

Tourmaline, 18k Gold

George III 18 Karat Yellow Gold and Enamel Memorial Mourning Ring, London, 1809
Located in Glasgow, GB
mark "SG", and "18" to denote 18 karat (carat) gold. Date: - 1809. Period: - Early 19th Century
Category

Antique Early 1800s British George III More Rings

Materials

Gold, 18k Gold, Yellow Gold, Enamel

SeidenGang Rare Etruscan-Greek Revival Bracelet 18Kt Yellow Gold 5.94 Ct Diamond
By Seiden Gang
Located in Miami, FL
, with the maker's mark, the hallmark for the gold assay and signed, "SG 18KT". Seidengang, was founded
Category

Vintage 1980s American Classical Roman Bangles

Materials

Diamond, 18k Gold, Yellow Gold

Victorian Enamel Vinaigrette Necklace Citrine & Garnet - Brezza Floreale
By Karen Sugarman Designs
Located in Colleyville, TX
fragrance. The makers mark “SG” and “A” on the interior lid indicates a provenance of Samuel Goldfarb who
Category

21st Century and Contemporary American Victorian Beaded Necklaces

Materials

Citrine, Garnet, Gold Plate

Austrian Enamel Vinaigrette Locket Necklace Kyanite Scorolite
Located in Colleyville, TX
so lightly fragranced cotton secretly hidden away for decades. The makers mark “SG” and “A” on the
Category

21st Century and Contemporary American Victorian Beaded Necklaces

Materials

Cultured Pearl, Vermeil, Sterling Silver, Gilt Metal

Victorian Enamel Blue Topaz Prehnite Vinaigrette Locket Necklace
By Karen Sugarman Designs
Located in Colleyville, TX
cotton, as there seems to be no discoloration or sticky reside of the interior metal. The makers mark
Category

21st Century and Contemporary American Victorian Beaded Necklaces

Materials

Topaz, Vermeil, Sterling Silver, Gilt Metal

Set of 5 Spanish Silver Musicians, Spain C.1950
Located in Toronto, ON
: 441.20 grams. All with silver marks for Spain and SG.
Category

20th Century Spanish Figurines and Sculptures

Materials

Silver

Seidengang Roman Revival Classic Drop Earrings in 18kt Yellow Gold
By SeidenGang
Located in Miami, FL
Roman revival earrings designed by SeidenGang. Beautiful vintage pieces, made by the jewelry
Category

Vintage 1980s American Classical Roman Drop Earrings

Materials

Gold, 18k Gold, Yellow Gold

Seiden Gang Gold, Diamond and White Onyx Fashion Ring
By SeidenGang
Located in Palm Beach, FL
approximate diamond weight is .25ct of overall G color and VS1 clarity. Stamped inside the ring are SG, a
Category

Late 20th Century American Revival Fashion Rings

Materials

Diamond, Onyx, Gold, 18k Gold

Sidney Garber Gold Rolling Bracelet
Located in Lambertville, NJ
- 82.2 grams. Marked: 750, Italy, Maker's SG mark.
Category

21st Century and Contemporary American More Bracelets

Materials

Gold

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Sg Jewelry Mark For Sale on 1stDibs

Surely you’ll find the exact sg jewelry mark you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Every item for sale was constructed with extraordinary care, often using 18k gold, gold and yellow gold. You’re likely to find the perfect sg jewelry mark among the distinctive items we have available, which includes versions made as long ago as the 20th Century as well as those produced as recently as the 20th Century. Creating a sg jewelry mark has been a part of the legacy of many jewelers, but those produced by SeidenGang, Cartier and Seiden Gang are consistently popular. Take a look at a sg jewelry mark featuring diamond from our inventory today to add the perfect touch to your look. Today, if you’re looking for a brilliant cut version of this piece and are unable to find the perfect match, our selection also includes cabochon alternatives. Most of our sg jewelry mark for sale are for women, but there are 3 pieces available to browse for men.

How Much is a Sg Jewelry Mark?

Prices for a sg jewelry mark can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $1,750 and can go as high as $53,627, while this accessory, on average, fetches $5,780.
Questions About Sg Jewelry Mark
  • 1stDibs ExpertNovember 1, 2023
    Yes, fake jewelry can have markings. Jewelry produced out of materials other than precious metals and real gemstones may still have a brand hallmark stamped somewhere on it, as many fashion jewelry makers add their logos to their pieces. Fake jewelry that is a replica of authentic fine jewelry may also bear a maker's mark to make the reproduction more convincing. However, these fraudulent hallmarks often aren't identical to the genuine markings, and noticing this difference can help you spot fakes being passed off as genuine pieces. Explore a large collection of jewelry on 1stDibs.
  • 1stDibs ExpertNovember 6, 2023
    Yes, some vintage jewelry has markings. Makers may have stamped pieces with hallmarks to represent the types of metals used in them and/or to signify that they came from certain brands. However, not all vintage jewelry is marked. On 1stDibs, shop a wide range of vintage jewelry from some of the world's top dealers.
  • 1stDibs ExpertMarch 22, 2022
    Yes, Monet jewelry is marked, but the hallmark employed by the brand has changed greatly over the years. During the 1920s and 30s, most pieces said "Monocraft." Later, the company used "Monet," "Monet Jewelers," and "Monet Sterling." Pieces after 1955 feature the brand name and a copyright symbol. On 1stDibs, shop a selection of vintage Monet jewelry.
  • 1stDibs ExpertFebruary 13, 2023
    One way to identify jewelry markings is to use trusted online resources. You can enter a description of the markings in a search engine to get results, whether they are serial numbers, a brand’s maker’s marks, or some other inscription that may appear on an accessory’s inner band or clasp. Ultimately, you’ll likely want to work with a certified appraiser who specializes in jewelry to accurately identify your jewelry’s markings. Shop a collection of vintage and designer jewelry from some of the world's top jewelers on 1stDibs.
  • 1stDibs ExpertApril 5, 2022
    Yes, Trifari was always diligent in marking its jewelry, and the mark has evolved over the years. There were a few pieces in the early years that went unmarked, but those pieces are extremely rare. Costume jewelry maker Trifari is widely beloved for its fine craftsmanship and complex designs for necklaces, brooches and other accessories. On 1stDibs, you can find a collection of authentic Trifari jewelry pieces from some of the world’s top sellers.