18k Necklace

18k gold is a type of gold that is not pure and is produced by humans with a mixture of other various materials. However, it does contain more pure gold than other types of gold. 18k gold can be found in three types which can also be classified according to their color. Yellow gold is the purest gold out of rose gold and white gold. It also consists of rich and vibrant gold color which is brighter than 10k and 14k gold necklace. White gold is the most popular metal when it comes to jewelry. The silvery color of the gold has always made it a topic of discussion. As for rose gold, it is a new type of gold that doesn't seem to go out of trend anytime soon. The mixture of various metals gives this gold pinkish color.

The pure 18k gold is most well known because the gold doesn't trigger and irritate skin which leads to fewer skin infections. Various types of jewels made from 18k gold can be found. One of the most popular pieces of jewelry throughout history is a necklace. People have been using antique and vintage necklaces to decorate themselves for more than a hundred years. The necklaces made from 18k gold are one of the most reliable necklaces because of their skin-friendly nature which is on sale. Antique and vintage necklaces made from 18k gold have often been used for both casual and formal occasions. Find one of the best jewels with elegant and classy features in our collection on Bidsquare. An 18k necklace for sale is available at various online auctions. 18k necklaces at auction with stunning colors and designate patterns are also available. 

16199 Results
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  • 0.15 ct. Tiffany & Co.  Solitaire Diamond Necklace in 18K Yellow Gold
    Estimate
    $2,895 - $3,520

    0.15 ct. Tiffany & Co. Solitaire Diamond Necklace in 18K Yellow Gold

    Est.
    $2,895 - $3,520
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,000
  • 27. 16 ct. Natural Emeralds & Diamonds Drop Necklace In 18k White Gold
    Estimate
    $32,980 - $37,749

    27. 16 ct. Natural Emeralds & Diamonds Drop Necklace In 18k White Gold

    Est.
    $32,980 - $37,749
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,000
  • 0.75 ct. Natural Pear Shape Round Diamonds Pendant & Necklace in 18K White Gold
    Estimate
    $5,175 - $6,550

    0.75 ct. Natural Pear Shape Round Diamonds Pendant & Necklace in 18K White Gold

    Est.
    $5,175 - $6,550
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,750
  • 1.85 ct. Natural Blue Sapphire's & Diamonds Clover Pendant With Chain in 18k White Gold
    Estimate
    $5,375 - $7,075

    1.85 ct. Natural Blue Sapphire's & Diamonds Clover Pendant With Chain in 18k White Gold

    Est.
    $5,375 - $7,075
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,750
  • 1.01 ct. Natural Blue Sapphire's & Diamonds Clover Pendant & Chain in 18k White Gold
    Estimate
    $3,500 - $4,060

    1.01 ct. Natural Blue Sapphire's & Diamonds Clover Pendant & Chain in 18k White Gold

    Est.
    $3,500 - $4,060
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,000
  • 0.52 ct. Natural Blue Sapphires & Diamond Clover Pendant & Chain in 18k White Gold
    Estimate
    $1,470 - $2,352

    0.52 ct. Natural Blue Sapphires & Diamond Clover Pendant & Chain in 18k White Gold

    Est.
    $1,470 - $2,352
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $500
  • Tiffany & Co T Smile Necklace Set in 18K Yellow Gold
    Estimate
    $2,149 - $2,789

    Tiffany & Co T Smile Necklace Set in 18K Yellow Gold

    Est.
    $2,149 - $2,789
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $750
  • Mikimoto 4.5 MM Pearl Necklace Set in 18K Yellow Gold
    Estimate
    $17,890 - $20,359

    Mikimoto 4.5 MM Pearl Necklace Set in 18K Yellow Gold

    Est.
    $17,890 - $20,359
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $2,500
  • Van Cleef & Arpels Ruby Flower Necklace Set in 18K Rose Gold
    Estimate
    $4,743 - $5,579

    Van Cleef & Arpels Ruby Flower Necklace Set in 18K Rose Gold

    Est.
    $4,743 - $5,579
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,750
  • Tiffany & Co Natural Pink Sapphire Heart Pendant & Necklace Set in 18K White Gold
    Estimate
    $1,989 - $2,589

    Tiffany & Co Natural Pink Sapphire Heart Pendant & Necklace Set in 18K White Gold

    Est.
    $1,989 - $2,589
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $750
  • Tiffany & Co 0.50 ct. Diamond Stations Necklace Set in 18K Yellow Gold
    Estimate
    $4,935 - $5,875

    Tiffany & Co 0.50 ct. Diamond Stations Necklace Set in 18K Yellow Gold

    Est.
    $4,935 - $5,875
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $1,750
  • Tiffany & Co Loving Heart Pendant Set In 18K Yellow Gold
    Estimate
    $2,170 - $3,097

    Tiffany & Co Loving Heart Pendant Set In 18K Yellow Gold

    Est.
    $2,170 - $3,097
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $750
  • Tiffany & Co Blue Topaz Smile Pendant Set in 18K White Gold
    Estimate
    $3,379 - $4,009

    Tiffany & Co Blue Topaz Smile Pendant Set in 18K White Gold

    Est.
    $3,379 - $4,009
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $750
  • 18kt. Statement Diamond Lattice Pattern Necklace
    Estimate
    $6,000 - $9,000

    18kt. Statement Diamond Lattice Pattern Necklace

    Est.
    $6,000 - $9,000
    Brunk Auctions
    6 Bids
    Current Bid
    $5,000
  • 18kt. Giant Baroque Tahitian Pearl and Diamond Drop Pendant
    Estimate
    $2,000 - $4,000

    18kt. Giant Baroque Tahitian Pearl and Diamond Drop Pendant

    Est.
    $2,000 - $4,000
    Brunk Auctions
    2 Bids
    Current Bid
    $1,100
  • Circle of Light: 18K Yellow Gold Diamond Necklace
    Estimate
    $2,886.47 - $3,848.62

    Circle of Light: 18K Yellow Gold Diamond Necklace

    Est.
    $2,886.47 - $3,848.62
    Turtle Bay Auctions
    0 Bids
    Starting Bid
    $1,399.50
  • Golden Pavé Radiance: 18K Yellow Gold Diamond Disc Necklace
    Estimate
    $3,272.16 - $4,362.88

    Golden Pavé Radiance: 18K Yellow Gold Diamond Disc Necklace

    Est.
    $3,272.16 - $4,362.88
    Turtle Bay Auctions
    0 Bids
    Starting Bid
    $1,586.50
  • Vintage 18K Gold & 925 Silver Italy Designer Jewelry Necklace 21 Grams

    Vintage 18K Gold & 925 Silver Italy Designer Jewelry Necklace 21 Grams

    Mebane Antique Auction Gall...
    Starting Bid
    $5
  • Italian Ladies 18k White Gold and Diamond Multiple Halo Necklace L 16"
    Estimate
    $8,000 - $12,000

    Italian Ladies 18k White Gold and Diamond Multiple Halo Necklace L 16"

    Est.
    $8,000 - $12,000
    DuMouchelles
    0 Bids
    Starting Bid
    $7,000
  • Azure Radiance: 18K White Gold Diamond Pendant
    Estimate
    $2,353.31 - $3,137.75

    Azure Radiance: 18K White Gold Diamond Pendant

    Est.
    $2,353.31 - $3,137.75
    Turtle Bay Auctions
    0 Bids
    Starting Bid
    $1,141
  • 18k White and Yellow Gold Medusa Pendant 3.3 g
    Estimate
    $300 - $600

    18k White and Yellow Gold Medusa Pendant 3.3 g

    Est.
    $300 - $600
    DuMouchelles
    1 Bid
    Current Bid
    $150
  • Solar Flare Elegance: 18K Yellow Gold Diamond Crescent Pendant
    Estimate
    $1,381.88 - $1,842.50

    Solar Flare Elegance: 18K Yellow Gold Diamond Crescent Pendant

    Est.
    $1,381.88 - $1,842.50
    Turtle Bay Auctions
    0 Bids
    Starting Bid
    $670
  • Golden Ember Radiance: 18K Two-Tone Fancy Yellow Diamond Pendant
    Estimate
    $3,523.78 - $4,698.38

    Golden Ember Radiance: 18K Two-Tone Fancy Yellow Diamond Pendant

    Est.
    $3,523.78 - $4,698.38
    Turtle Bay Auctions
    0 Bids
    Starting Bid
    $1,708.50
  • Plated 18KT Yellow Gold 7.92ctw Pink Topaz Necklace
    Estimate
    $400 - $500

    Plated 18KT Yellow Gold 7.92ctw Pink Topaz Necklace

    Est.
    $400 - $500
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Plated 18KT Yellow Gold 2.55ctw Emerald and Diamond Pendant with Chain
    Estimate
    $250 - $350

    Plated 18KT Yellow Gold 2.55ctw Emerald and Diamond Pendant with Chain

    Est.
    $250 - $350
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Plated 18KT Yellow Gold 4.00ctw Amethyst and Diamond Pendant with Chain
    Estimate
    $250 - $350

    Plated 18KT Yellow Gold 4.00ctw Amethyst and Diamond Pendant with Chain

    Est.
    $250 - $350
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Nuestra Senora De Atocha Silver 2 Reale Piece of Eight Pendant, Ca. 1622, H 1.5" W 1" 9.6 g
    Estimate
    $400 - $800

    Nuestra Senora De Atocha Silver 2 Reale Piece of Eight Pendant, Ca. 1622, H 1.5" W 1" 9.6 g

    Est.
    $400 - $800
    DuMouchelles
    2 Bids
    Current Bid
    $325
  • Sterling Silver 19.18ctw Blue Topaz Jewelry Set
    Estimate
    $600 - $700

    Sterling Silver 19.18ctw Blue Topaz Jewelry Set

    Est.
    $600 - $700
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Plated 18KT Rose Gold 5.55ctw Pink Amethyst and Rhodolite Pendant
    Estimate
    $300 - $500

    Plated 18KT Rose Gold 5.55ctw Pink Amethyst and Rhodolite Pendant

    Est.
    $300 - $500
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 18KT Yellow Gold 2.01ct Brown Diamond Pendant with Chain
    Estimate
    $14,000 - $18,000

    18KT Yellow Gold 2.01ct Brown Diamond Pendant with Chain

    Est.
    $14,000 - $18,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Plated 18KT Yellow Gold 1.71ctw Dyed Emerald and White Topaz Jewelry Set
    Estimate
    $400 - $500

    Plated 18KT Yellow Gold 1.71ctw Dyed Emerald and White Topaz Jewelry Set

    Est.
    $400 - $500
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 18KT White Gold 4.51ct IGI Cert Light Yellow Diamond Pendant
    Estimate
    $55,000 - $65,000

    18KT White Gold 4.51ct IGI Cert Light Yellow Diamond Pendant

    Est.
    $55,000 - $65,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Plated 18KT Yellow Gold 2.55ctw Tanzanite and Diamond Pendant with Chain
    Estimate
    $250 - $350

    Plated 18KT Yellow Gold 2.55ctw Tanzanite and Diamond Pendant with Chain

    Est.
    $250 - $350
  • Plated 18KT Yellow Gold 1.71ctw Dyed Emerald and White Topaz Jewelry Set
    Estimate
    $400 - $500

    Plated 18KT Yellow Gold 1.71ctw Dyed Emerald and White Topaz Jewelry Set

    Est.
    $400 - $500
  • 18K Colombian Emerald Cross Necklace
    Estimate
    $800 - $1,000

    18K Colombian Emerald Cross Necklace

    Est.
    $800 - $1,000
  • Roberto Coin 18K Diamond Link Necklace
    Estimate
    $3,000 - $3,500

    Roberto Coin 18K Diamond Link Necklace

    Est.
    $3,000 - $3,500
  • 18K Lapis & Diamond Cross Necklace
    Estimate
    $10,000 - $20,000

    18K Lapis & Diamond Cross Necklace

    Est.
    $10,000 - $20,000
    9 Bids
    Sold for
    $16,000
  • 18K Sapphire Diamond Topaz Necklace
    Estimate
    $1,500 - $2,000

    18K Sapphire Diamond Topaz Necklace

    Est.
    $1,500 - $2,000
  • 18K Colombian Emerald Cross Necklace
    Estimate
    $800 - $1,000

    18K Colombian Emerald Cross Necklace

    Est.
    $800 - $1,000
  • 18K Yellow and White Gold Flower Necklace
    Estimate
    $2,000 - $2,500

    18K Yellow and White Gold Flower Necklace

    Est.
    $2,000 - $2,500
  • 18K Diamond and Pearl Choker Necklace
    Estimate
    $2,500 - $3,000

    18K Diamond and Pearl Choker Necklace

    Est.
    $2,500 - $3,000
  • 18K Fancy Link Chain
    Estimate
    $15,000 - $20,000

    18K Fancy Link Chain

    Est.
    $15,000 - $20,000
    4 Bids
    Sold for
    $15,500
  • 18K White gold Open Work Diamond Pendant
    Estimate
    $1,400 - $1,800

    18K White gold Open Work Diamond Pendant

    Est.
    $1,400 - $1,800
  • 18K Smoky Quartz Pendant
    Estimate
    $600 - $900

    18K Smoky Quartz Pendant

    Est.
    $600 - $900
    9 Bids
    Sold for
    $1,500
  • Plated 18KT Yellow Gold 7.92ctw Pink Topaz Necklace
    Estimate
    $400 - $500

    Plated 18KT Yellow Gold 7.92ctw Pink Topaz Necklace

    Est.
    $400 - $500
  • Elegant Fancy-Shape Diamond Line Necklace
    Estimate
    $30,000 - $40,000

    Elegant Fancy-Shape Diamond Line Necklace

    Est.
    $30,000 - $40,000
  • Pearl Necklace
    Estimate
    $1,500 - $2,000

    Pearl Necklace

    Est.
    $1,500 - $2,000
  • Line Diamond Necklace
    Estimate
    $20,000 - $25,000

    Line Diamond Necklace

    Est.
    $20,000 - $25,000