Unknown Pendant Necklaces
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Creator: Unknown
Victorian era 18K gold coat of arms photo locket pendant lion crown flowers
Located in Versailles, FR
Step back in time with this rare 19th-century locket pendant, a timeless treasure steeped in history and heraldry. Adorned with a beautiful coat of arms featuring two noble lions, a ...
Category
19th Century French Victorian Antique Unknown Pendant Necklaces
Materials
18k Gold
Antique Victorian 18K Yellow Gold Heart Lock and Key Pendant Charm
Located in Great Neck, NY
Beautiful Antique Victorian 18K Yellow Gold Heart Lock and Key Pendant Charm. This amazing antique Victorian heart pendant charm is crafted in 18k yellow gold. The charm has a lockin...
Category
1890s Victorian Antique Unknown Pendant Necklaces
Materials
Gold, 18k Gold, Yellow Gold
18 Karat Gold Pearl and Onyx Cross Pendant
Located in Palm Springs, CA
Italian onyx cross pendant with 18 karat gold harness and pearls / Made in Italy 1870s-1890s
Category
Late 19th Century Italian Antique Unknown Pendant Necklaces
Materials
Onyx, Pearl, 18k Gold
Pave Diamond Heart Pendant
Located in London, GB
This is a wonderful contemporary diamond heart pendant. The heart has been pave set with 5.02 carats of round brilliant cut diamonds and crafted in 18ct white gold with an openwork b...
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
Diamond, 18k Gold, White Gold
Marco Bicego 18 Karat Yellow & White Diamond Lariat Necklace
Located in Scottsdale, AZ
Designer: Marco Bicego
Material: 18K yellow & white gold
Diamond: round brilliant cut = 0.25cttw
Color: H
Clarity: VS2
Weight: 17.01 grams
Dimensions: necklace measures 16.25-inches
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
White Diamond, 18k Gold
Art Deco Diamond and Jade Pendant Necklace
Located in New York, NY
Art Deco Diamond and Jade Pendant Necklace
A pendant necklace featuring a center diamond wreath with a dangling jade and a floral motif in the middle complimented by a bow on top
...
Category
20th Century Unknown Unknown Pendant Necklaces
Materials
Diamond, Jade, 14k Gold, Platinum
Antique Victorian 15K Gold & Silver 10.8ctw Old Cut Diamond Pendant & Brooch
Located in Staines-Upon-Thames, GB
A Victorian diamond, silver, and yellow gold brooch and pendant, comprising one large old mine cut diamond, fifty-two smaller old mine cut diamonds, and fifteen rose cut diamonds, se...
Category
1870s British Victorian Antique Unknown Pendant Necklaces
Materials
Diamond, 15k Gold, Silver
Art Nouveau Garnet and Pearl Pendant Necklace
Located in London, GB
This is an antique Art Nouveau garnet and pearl pendant necklace. It has been set with a central garnet which is surrounded by multiple seed pearls along with an oval cut garnet drop...
Category
Late 19th Century Art Nouveau Antique Unknown Pendant Necklaces
Materials
Garnet, Pearl, 9k Gold, Yellow Gold
Victorian Carved Moonstone Yellow Gold Greek God Hermes Antique Cameo Pendant
Located in Philadelphia, PA
Centering a cushion-shaped moonstone tablet measuring 13.0 x 16.5 mm - carved with cameo
Depicting a cameo of the Greek god, Hermes wearing a winged helmet and with caduceus
Transluc...
Category
1870s Victorian Antique Unknown Pendant Necklaces
Materials
Moonstone, Gold, 14k Gold, 18k Gold, Yellow Gold
5.50ct Diamond Tennis Necklace
Located in New York, NY
This is an elegant platinum necklace. The necklace is set with sparkling round cut diamonds that weigh approximately 5.50ct. The color of these diamonds is G-H with VS clarity. The n...
Category
20th Century Unknown Pendant Necklaces
Materials
Diamond, Platinum
Vintage 18k Lapis Lazuli Diamond Pendant Brooch Pin Brutalist Solid Yellow Gold
Located in Greer, SC
Exquisite vintage 18k lapis lazuli convertible pendant / brooch, adorned with dazzling diamonds. This brutalist style pendant is a great example of mid century art and craftsmanship....
Category
Mid-20th Century Unknown Modernist Unknown Pendant Necklaces
Materials
Diamond, Lapis Lazuli, Yellow Gold
Ladies 14K White Gold Baguette & Round Diamond Rectangular Pendant Necklace
Located in Houston, TX
Gender: Ladies
Metal Type: White Gold
Length: 20.00 inches
Weight: 4.19 grams
One ladies custom-made polished 14K white gold single strand collar, diamond necklace. The metal wa...
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
Diamond, Gold, 14k Gold, White Gold
Antique 1.60ct Diamond and 18k Yellow Gold Cross Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive antique 1920's 1.60 carat diamond, 18ct yellow gold and platinum set cross pendant; part of our diverse antique diamond pendant collections.
This stu...
Category
1920s Vintage Unknown Pendant Necklaces
Materials
Diamond, 18k Gold, Yellow Gold, Platinum
Emerald and Cultured Pearl Necklace
Located in New York, NY
Emerald and Cultured Pearl Necklace
A four-strand necklace with cultured pearls and 135 emerald beads separated with gold spacers. It features a center gold pendant adorned with mix...
Category
20th Century Unknown Unknown Pendant Necklaces
Materials
Diamond, Emerald, Cultured Pearl, 18k Gold
Diamond Pendant Charm 18 Karat Yellow Gold
Located in Geneva, CH
Enhance your elegance with this exquisite small pendant crafted in 18K yellow gold.
Adorned with a dazzling diamond weighing 0.4 carats, this pendant exudes sophistication and charm....
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
Diamond, Yellow Gold
Art Deco Diamond Négligée Necklace
Located in London, GB
Here we have a delightful diamond négligée necklace from the later stages of the Art Deco movement. A duo of old cut diamonds hang freely from individual diamond set knife edge bars ...
Category
Early 20th Century Unknown Pendant Necklaces
Materials
Diamond, Platinum
Citrine Crystal Silver Pendant Yellow Quartz Vintage Jewelry November Birthstone
Located in Berlin, DE
Silver pendant with natural raw unheated Citrine crystal
gem size is 0.47 x 0.59 х 1.81 in / 12 х 15 х 46 mm
pendant weight - 29.27 grams
pendant le...
Category
2010s German Artisan Unknown Pendant Necklaces
Materials
Citrine, Crystal, Quartz, Silver
Art Deco 0.60ct Diamond and Pearl Pendant, c.1920s
Located in London, GB
This dainty Diamond and Pearl pendant was hand crafted in the 1920s. Centring around a 4mm drop down pearl, a circlet of platinum surrounds with six diamonds set between petal design...
Category
1920s Unknown Art Deco Vintage Unknown Pendant Necklaces
Materials
Diamond, Pearl, Platinum
Vintage 14k Gold Tree of Life Charm Pendant
Located in beverly hills, CA
Bold and dramatic vintage 14K gold charm/pendant featuring a tree of life set with multicolor gemstones in center.
The round center disc is be...
Category
Mid-20th Century Unknown Pendant Necklaces
Materials
14k Gold, Yellow Gold
14K Amethyst Diamond Pendant Necklace - Vintage Style Jewelry, Statement Piece
Located in Holtsville, NY
Indulge in timeless elegance with this exquisite 14K Yellow Gold pendant necklace, adorned with a captivating 1.10 Carat Oval Modified Brilliant Amethyst complemented by delicate dia...
Category
2010s American Unknown Pendant Necklaces
Materials
Amethyst, Diamond, 14k Gold, Yellow Gold
Vintage 14K 1.36ctw Tourmaline Diamond Pendant Necklace - Fine Statement Jewelry
Located in Holtsville, NY
Elevate your style with this exquisite 14K Yellow Gold Pendant Necklace, featuring a captivating 1.36 Carat Emerald Cut Tourmaline and 0.27 Carats of shimmering Diamonds.
Specificat...
Category
2010s American Unknown Pendant Necklaces
Materials
Diamond, Tourmaline, 14k Gold, Yellow Gold
14K Tourmaline Diamond Pendant Necklace - Vintage Style Jewelry, Statement Piece
Located in Holtsville, NY
Elevate your style with this exquisite 14K Yellow Gold pendant necklace, featuring a captivating 0.49 Carat Faceted Oval Tourmaline and shimmering diamond accents.
SPECIFICATIONS:
...
Category
2010s American Unknown Pendant Necklaces
Materials
Diamond, Tourmaline, 14k Gold, Yellow Gold
Victorian Diamond Double Heart and Bow Luckenbooth Silver Upon Gold Pendant
Located in London, GB
A Victorian diamond set, Luckenbooth double witches' heart pendant, with rose cut diamonds set in the two hearts and bow, weighing an estimated total of 1.50ct, in grain and cut down settings, mounted in silver-upon-gold. Circa 1880.
Luckenbooth brooches are traditional Scottish love tokens. They are usually a heart shaped brooch, often with a crown or coronet above one heart, or two intertwined hearts, with similar motifs to the Claddagh ring. European Heart-shaped brooches date back to late medieval period but this design probably did not appear in Scotland before the 17th century. It became very popular in the 19th century, featuring in the ranges of Scottish manufacturing jewellers, for the Highland outfitter and tourist trades. They are typically made of silver, although gold heart brooches were made for wealthy people and may be engraved or set with stones.
The name comes from the Luckenbooths of Edinburgh. Luckenbooth is a Scots word for a lockable stall or workshop. Originating in the 15th century, they were the city's first permanent shops, situated on the Royal Mile near St. Giles Cathedral. Initially housing mainly silversmiths and goldsmiths. They were demolished in 1817.
The brooches were often given as a betrothal or wedding gift. It might have been worn as a charm, by a nursing mother to help her milk flow or be pinned to a baby’s clothing. It was also known as a witch-brooch to protect children from evil.
By the mid-18th century, Luckenbooth tokens featured heavily as trade silver...
Category
1880s Victorian Antique Unknown Pendant Necklaces
Materials
Diamond, Gold, Silver
Elegant 18K Yellow Gold Pear Modified Brilliant Tanzanite Pendant
Located in Holtsville, NY
Introducing our exquisite 18K Yellow Gold Tanzanite Pendant, a symbol of sophistication and timeless beauty. This pendant features a stun...
Category
2010s American Unknown Pendant Necklaces
Materials
Tanzanite, Yellow Gold
14K Sapphire & Diamond Pendant Necklace - 2.82ct - Timeless Elegance, Luxury
Located in Holtsville, NY
Elevate your jewelry collection with this exquisite 14K Yellow Gold Sapphire and Diamond Pendant Necklace. Crafted with precision and elegance, this necklace is a timeless piece that...
Category
2010s American Unknown Pendant Necklaces
Materials
Diamond, Sapphire, 14k Gold, Yellow Gold
Sweet heart pearl pendant in gold with diamond
Located in Berlin, BE
Enter the realm of exquisite elegance with this enchanting 14k yellow gold pendant, a true masterpiece of craftsmanship and sophistication. Gracing its center is a captivating heart...
Category
21st Century and Contemporary French Aesthetic Movement Unknown Pendant Necklaces
Materials
Diamond, Pearl, Gold, 14k Gold, Yellow Gold
Vintage 1960s Roman Coin Link Necklace
Located in New York, NY
Finely crafted in 18k yellow gold with a Roman coin, Round Brilliant cut Diamonds weighing approximately a total of 2.00 carats, and a Cabochon Sapphire weighing approximately 0.50 c...
Category
1960s Vintage Unknown Pendant Necklaces
Materials
Diamond, Sapphire, 18k Gold
14 Karat Yellow Gold Bezel Set Graduated Diamond Necklace
Located in Scottsdale, AZ
Designer: custom
Material: 14K yellow gold
Diamonds: 11 round brilliant cut = 1.64cttw
Color: H
Clarity: SI1-2
Dimensions: necklace measures 18-inches in length
Weight: 18.10 grams
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
Diamond, Yellow Gold, 14k Gold
New Made 14k Gold Natural Diamond And Enamel Decorated Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition...
Total weight 19.4 grams...
Dimention is diamond totally 0.60 carat...
Clearity is diamond G-H color and vvs-vs...
Dimention is necklace 27.5 cm...
Please co...
Category
2010s Turkish Modern Unknown Pendant Necklaces
Materials
Diamond, 14k Gold
Antique Victorian Coral Padlock
Located in Brooklyn, NY
This one of a kind hand carved coral padlock features two cherub figures on each side of the lock. The gold findings on the padlock have been tested at 14k gold.
Category
19th Century American Victorian Antique Unknown Pendant Necklaces
Materials
Coral, 14k Gold
1950 Sterling Silver Matchbox Pendent
Located in Scottsdale, AZ
Introducing the exquisite 1940s Sterling Silver Engraved Matchbox Pendant, a delightful fusion of function and style. Crafted from sterling silver, this pendant not only serves as a ...
Category
1950s Vintage Unknown Pendant Necklaces
Materials
Sterling Silver
18K Yellow Gold Sapphire and Diamond Pendant, 5.8ct
Located in Holtsville, NY
Elevate your style with our stunning sapphire pendant, adorned with a mesmerizing 5.8ct sapphire and dazzling diamonds. Divided into three distinct sections—featuring a sapphire sett...
Category
2010s American Artist Unknown Pendant Necklaces
Materials
Diamond, Sapphire, Yellow Gold
Antique Victorian Blister Pearl and 0.42Ct Diamond 9k Yellow Gold Pendant
Located in Jesmond, Newcastle Upon Tyne
A stunning, fine and impressive, antique Victorian blister pearl and 0.42 carat diamond, 9 karat yellow gold and silver set pendant; part of ou...
Category
1860s Victorian Antique Unknown Pendant Necklaces
Materials
Diamond, Pearl, Yellow Gold, Silver
Antique silver young child portrait pendant
Located in Versailles, FR
For sale a rare Art Deco era silver pendant, showcasing a scene of innocence and sweetness of a very cute child in his/her pyjama.
The child's adorable presence is enhanced by intri...
Category
Early 20th Century German Art Deco Unknown Pendant Necklaces
Materials
Silver
NWT $6, 500 Rare 18Kt Gold Fancy Blue Sapphire Diamond Flower Pendant Necklace
Located in New York, NY
The Following Item we are offering is a Rare Important Radiant 18KT Gold Gorgeous Large Shimmering Blue Sapphire and Diamond Pendant Necklace. Pendant is comprised of Beautiful Shimm...
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
Diamond, Blue Sapphire, Gold, 18k Gold
Vintage 14K White Gold Diamond Horseshoe Necklace
Located in Henderson, NV
Crafted in 14K white gold, the necklace features a diamond set horseshoe in the center.
12 round brilliant cut diamonds: 0.36ctw. Color: G-H, Clarity: SI2-I1
Measurements:
Horseshoe:...
Category
21st Century and Contemporary American Unknown Pendant Necklaces
Materials
Diamond, Gold, 14k Gold, White Gold
Noble Pendant with diamonds and sapphire in 14k whitegold
Located in Berlin, BE
Indulge in the ethereal beauty of this exquisite white gold pendant, adorned with twelve dazzling diamonds in brilliant cuts encircling a mesmerizing oval-cut sapphire at its heart. ...
Category
21st Century and Contemporary French Aesthetic Movement Unknown Pendant Necklaces
Materials
Diamond, Sapphire, Gold, 14k Gold, White Gold
Antique Pearl, Diamond, Platinum And Gold Cluster Pendant, Circa 1910
Located in London, GB
An antique, pearl and diamond cluster pendant, with a silver white natural bouton pearl, in the centre of a diamond cluster, of eight alternating larger and smaller old-cut diamonds,...
Category
1910s English Edwardian Vintage Unknown Pendant Necklaces
Materials
Diamond, Pearl, Gold, Platinum
Irina Volkonskii Very Long Doll Necklace from 2000s
Located in CHAMPEAUX-SUR-SARTHE, FR
Ultra Rare Irina Volkonskii for Paul Smith London, Very Long Pendant Necklace, made of Blue, White, Red, Black pearls with a Large Geisha Doll Pendant ad...
Category
Early 2000s French Unknown Pendant Necklaces
Vintage 18k Gold Natural Diamond Decorated Heart Pendant Necklace
Located in Fatih/İstanbul, 34
In very good condition.
Total weight is 14.5 grams.
Totally is diamond 2.30 ct.
The diamond is has G-H color and vvs-vs-s1 clarity.
Totally is lenght 41 cm.
Please contact for any qu...
Category
1990s European Retro Unknown Pendant Necklaces
Materials
Diamond, 18k Gold
GIA Emerald Platinum 18K Pendant Diamond Certified Victorian Huge AAA 5.26 Cts
Located in Sylvania, GA
Old South Jewels proudly presents VINTAGE LUXURY. HUGE GIA CERTIFIED 5.26 CARAT GREEN EMERALD AND DIAMOND PLATINUM NECKLACE & BOX! RARE LUXURIOUS ANTIQUE PLATINUM & 18K COVERED IN ...
Category
Late 18th Century Victorian Antique Unknown Pendant Necklaces
Materials
Diamond, Emerald, 18k Gold, Platinum
Vintage Enamel, Amethyst, Diamond and Pearl Floral Pendant
Located in London, GB
This is a truly wonderful Art Nouveau style 18ct yellow gold natural pearl, amethyst, diamond and enamel pendant. The highly decorated, iconic Art Nouveau frame has a floriated desig...
Category
1970s Art Nouveau Vintage Unknown Pendant Necklaces
Materials
Diamond, Pearl, Amethyst, Gold, Yellow Gold, Enamel
Antique Convertible Platinum 4.70 Ct Diamond Pendant Brooch
Located in Flushing, NY
Antique Convertible Platinum & 18K Gold 4.70 Carat Diamond Pendant Brooch
A Fine example of a Antique Platinum & 18K Gold Diamond Pendant / Brooch - The pendant is convertable and ...
Category
Early 20th Century Unknown Pendant Necklaces
Materials
White Diamond, Gold, 18k Gold, Platinum
Victorian Pearl Heart Pendant Necklace
Located in London, GB
Here we have a wonderful pearl pendant necklace. This pendant has been crafted from 18ct yellow gold into the the shape of a love heart. The piece has then been expertly set with a ...
Category
19th Century Antique Unknown Pendant Necklaces
Materials
Pearl
Edwardian Sapphire and Diamond Platinum Necklace
Located in Seattle, WA
This one is for the true vintage jewelry connoisseur who appreciates the story as much as the piece. This stunning necklace came in as part of a s...
Category
Early 20th Century Edwardian Unknown Pendant Necklaces
Materials
Diamond, Sapphire, Platinum
Vintage Tutankhamun Pendant Necklace
Located in London, GB
Here we have an excellent pendant necklace crafted from 18ct yellow gold into the shape of the mask of Tutankhamun. The mask of Tutankhamun is a gold funerary mask of the ancient pha...
Category
21st Century and Contemporary Unknown Pendant Necklaces
Materials
Yellow Gold
New Made 18k Gold Natural Diamond Decorated Letter S Pendant
Located in Fatih/İstanbul, 34
In very good condition.
Total weight is 3.9 grams.
Totally is diamond 1.11 ct.
The diamond is has F- G color and vvs- vs clarity.
Please contact for any questions.
Category
2010s Turkish Modern Unknown Pendant Necklaces
Materials
Diamond, 18k Gold
beautiful heart-shaped necklace in 14k yellow gold
Located in Berlin, BE
Immerse yourself in the dreamlike beauty of this exquisite gold necklace, adorned with a stunning heart-shaped pendant. Crafted in 14k yellow gold, this beautiful necklace exudes a r...
Category
2010s German Aesthetic Movement Unknown Pendant Necklaces
Materials
Yellow Gold
White South Sea Pearl Diamond 18K Gold Statin Brushed Gold Pendant Necklace
Located in Fairfax, VA
Beautiful Unique South Sea Pearl with an amazing Rainbow Colored Iridescence
17 inches chain length
18K Yellow Gold with satin brushed finish
0.10 carats Diamonds F/VS
South Sea Pea...
Category
2010s American Modern Unknown Pendant Necklaces
Materials
Diamond, Pearl, 18k Gold, Yellow Gold
Large Yellow Jadeite Pendant Beaded Necklace A-Grade GIA Gemologist Appraisal
Located in Richmond, CA
A large finely carved and pierced natural yellow jadeite pendant, featuring a circular medallion, surrounded by scrolling foliage borders (L:22-...
Category
20th Century Chinese Artisan Unknown Pendant Necklaces
Materials
Jade
Boulder Opal necklace silver Natural Australian Blue Green Gemstone
Located in Berlin, DE
Silver pendant with natural Boulder Opal
opal origin - Australia
opal measurements - 0.16 x 0.75 x 0.75 in / 4 х 19 х 19 mm
opal weight - 8.90 carat
pendant length - 30 mm / 1.2 in
...
Category
2010s German Artisan Unknown Pendant Necklaces
Materials
Opal, Silver
Unique Gems Green Agate Charm
Located in MANRESA, ES
One-of-a-kind green agate charm. Hand-made assembled on a 14-karat gold frame and recovered from our broken gems archives.
This pendant celebrates the beauty in imperfection.
Gemst...
Category
2010s Spanish Modern Unknown Pendant Necklaces
Materials
Agate, 14k Gold
Florence Flair - Murano Glass
Located in Istanbul, TR
This Murano glass necklace is special due to its intricate craftsmanship and the centuries-old techniques used in its creation. Murano glass is renowned worldwide for its exceptional...
Category
2010s European Artisan Unknown Pendant Necklaces
Art Deco full set diamond necklace with emerald 18k whitegold
Located in Berlin, BE
Step into a world of opulence and luxury with this magnificent diamond necklace, expertly crafted from 18k white gold. The necklace boasts an exquisite diamond shape, fully set with ...
Category
Late 20th Century German Art Deco Unknown Pendant Necklaces
Materials
Diamond, Emerald, Gold, 18k Gold, Yellow Gold
Lapis Lazuli set ropetwist 'stepped squares' pendant
Located in London, GB
Formed of 9 interlocking 'ropetwist' stepped squares, set at centre with a square Lapis Lazuli 'tile' of beautiful colour, this is a wonderfully simple yet stylish pendant, perfect ...
Category
2010s British Unknown Pendant Necklaces
Materials
Lapis Lazuli, Gold Plate, Brass
14Kt White Gold & Black Enamel Necklace, Bracelet or Pocket Chain & Masonic Fob
Located in Long Beach, CA
This is a great looking handmade necklace, bracelet, or pocket watch chain. Each link is hand constructed in solid white gold and hand engraved, and done with kiln fired black enamel...
Category
1930s American Art Deco Vintage Unknown Pendant Necklaces
Materials
White Gold, Enamel
Iolite Pendant Necklace With Diamonds 1.71 Carats 14K Yellow Gold
Located in Laguna Niguel, CA
It comes with the Gemological Appraisal by GIA GG/AJP
All Gemstones are Natural
Iolite = 1.53 Carat
23 Diamonds = 0.18 Carats
Metal: 14K Yellow Gold
Pendant Dimensions: 19 x 11 mm
Category
21st Century and Contemporary Contemporary Unknown Pendant Necklaces
Materials
Diamond, White Diamond, Iolite, Gold, 14k Gold, Yellow Gold
14k White Gold GIA Certified 1.71ct Cushion Cut Natural Diamond
Located in Boca Raton, FL
Pendant Details:
14kt yellow gold large round mixed shapes and color natural diamond
Apdiatw= 1.60cts
ApColor diatw= 9.20cts
Approx diamond clarity= SI
Approx diamond color= H-I
37.72mm x 9.71mm x 45.01mm
Chain Details: 14 White Gold Rolo Chain...
Category
21st Century and Contemporary Unknown Unknown Pendant Necklaces
Materials
Diamond, White Gold
Unknown pendant necklaces for sale on 1stDibs.
Find a range of Unknown pendant necklaces available on 1stDibs. Each of these unique items was designed with extraordinary care, often using gold. While looking for the most stylish antique or vintage Unknown jewelry to pair with your ensemble, you’ll find that Unknown diamond pendant necklaces, from our inventory of 8,239, can add a particularly distinctive touch to your look. We have 13,840 pieces in this collection as well as a number of other designs by this jeweler. While this collection reflects work that originated over various time periods, most of these items were designed during the 21st century and contemporary. Prices for Unknown pendant necklaces can differ depending upon gemstone, time period and other attributes. On 1stDibs, the price for these items starts at $50 and tops out at $4,000,000, while pieces like these, on average, can sell for $1,963.