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. 

16595 Results
Sort by
  • Prada Eternal Gold Pendant 18K Yellow Gold Necklace With Diamonds
    Estimate
    $6,000 - $7,000

    Prada Eternal Gold Pendant 18K Yellow Gold Necklace Wit...

    Est.
    $6,000 - $7,000
    Auction Plus, Inc.
    0 Bids
    Starting Bid
    $5,000
  • 18k Yellow Gold Diamond Pendant
    Estimate
    $1,200 - $2,300

    18k Yellow Gold Diamond Pendant

    Est.
    $1,200 - $2,300
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,200
  • 18k Solid Yellow Gold Handmade 5mm Fancy Rolo Link Necklace, 24"
    Estimate
    $7,875 - $10,775

    18k Solid Yellow Gold Handmade 5mm Fancy Rolo Link Neck...

    Est.
    $7,875 - $10,775
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $500
  • 27. 16 ct. Natural Emerald & Diamond Necklace 18k White Gold
    Estimate
    $32,990 - $37,790

    27. 16 ct. Natural Emerald & Diamond Necklace 18k White...

    Est.
    $32,990 - $37,790
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $500
  • 0.74 ct. Natural Pear Shape Diamond Pendant Necklace in 18K White Gold
    Estimate
    $3,960 - $5,280

    0.74 ct. Natural Pear Shape Diamond Pendant Necklace in...

    Est.
    $3,960 - $5,280
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $100
  • Natural Emerald Pendant 18K White Gold Chain And Setting
    Estimate
    $6,000 - $7,000

    Natural Emerald Pendant 18K White Gold Chain And Settin...

    Est.
    $6,000 - $7,000
    Auction Plus, Inc.
    0 Bids
    Starting Bid
    $5,500
  • VINTAGE / CONTEMPORARY 14K AND 18K YELLOW GOLD JEWELRY, LOT OF FOUR
    Estimate
    $150 - $250

    VINTAGE / CONTEMPORARY 14K AND 18K YELLOW GOLD JEWELRY,...

    Est.
    $150 - $250
    Jeffrey S. Evans & Assoc., ...
    0 Bids
    Starting Bid
    $70
  • Steuben 18K and Glass Pendant
    Estimate
    $300 - $500

    Steuben 18K and Glass Pendant

    Est.
    $300 - $500
    Kodner Galleries
    3 Bids
    Current Bid
    $200
  • Diamond, 18K and 10K Pendant
    Estimate
    $200 - $400

    Diamond, 18K and 10K Pendant

    Est.
    $200 - $400
    Kodner Galleries
    0 Bids
    Starting Bid
    $100
  • Fine 15mm-12mm White and Gold South Sea and Tahitian Pearl Lariat Necklace
    Estimate
    $1,800 - $2,200

    Fine 15mm-12mm White and Gold South Sea and Tahitian Pe...

    Est.
    $1,800 - $2,200
    Rafael Osona Auctions
    0 Bids
    Starting Bid
    $1,600
  • 0.34ct. Natural Diamond Fashion Dragon Fly Pendant In  18K Yellow Gold
    Estimate
    $2,687 - $2,991

    0.34ct. Natural Diamond Fashion Dragon Fly Pendant In 1...

    Est.
    $2,687 - $2,991
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $100
  • 18kt White Gold 1ctw Diamond Necklace
    Estimate
    $5,200 - $8,200

    18kt White Gold 1ctw Diamond Necklace

    Est.
    $5,200 - $8,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $5,200
  • 18kt White Gold 1ctw Diamond Necklace
    Estimate
    $5,200 - $8,100

    18kt White Gold 1ctw Diamond Necklace

    Est.
    $5,200 - $8,100
    Robinhood Auctions
    0 Bids
    Starting Bid
    $5,200
  • 18kt White Gold 1.15ctw Diamond Pendant
    Estimate
    $1,800 - $5,100

    18kt White Gold 1.15ctw Diamond Pendant

    Est.
    $1,800 - $5,100
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,800
  • 18kt White Gold 0.84ctw Diamond Pendant
    Estimate
    $1,200 - $2,400

    18kt White Gold 0.84ctw Diamond Pendant

    Est.
    $1,200 - $2,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,200
  • 18kt White Gold 3.51ctw Diamond Pendant
    Estimate
    $6,000 - $9,800

    18kt White Gold 3.51ctw Diamond Pendant

    Est.
    $6,000 - $9,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $6,000
  • 18kt Yellow Gold 0.45ctw Diamond Pendant
    Estimate
    $2,800 - $3,600

    18kt Yellow Gold 0.45ctw Diamond Pendant

    Est.
    $2,800 - $3,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,800
  • 18kt White and Yellow Gold 1.23ctw Diamond Pendant
    Estimate
    $2,800 - $3,800

    18kt White and Yellow Gold 1.23ctw Diamond Pendant

    Est.
    $2,800 - $3,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,800
  • 18kt White and Yellow Gold 1.26ctw Diamond Pendant
    Estimate
    $2,400 - $4,200

    18kt White and Yellow Gold 1.26ctw Diamond Pendant

    Est.
    $2,400 - $4,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,400
  • 18kt White Gold 1ctw Diamond Pendant
    Estimate
    $3,000 - $4,200

    18kt White Gold 1ctw Diamond Pendant

    Est.
    $3,000 - $4,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,000
  • 18kt White Gold 0.58ctw Diamond Pendant
    Estimate
    $3,900 - $5,600

    18kt White Gold 0.58ctw Diamond Pendant

    Est.
    $3,900 - $5,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,900
  • 18kt Yellow Gold 0.82ctw Diamond Pendant
    Estimate
    $3,000 - $6,300

    18kt Yellow Gold 0.82ctw Diamond Pendant

    Est.
    $3,000 - $6,300
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,000
  • 18kt White Gold 2.35ctw Diamond Pendant
    Estimate
    $5,100 - $7,800

    18kt White Gold 2.35ctw Diamond Pendant

    Est.
    $5,100 - $7,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $5,100
  • 18kt White Gold 4.6ctw Diamond Pendant
    Estimate
    $6,500 - $10,500

    18kt White Gold 4.6ctw Diamond Pendant

    Est.
    $6,500 - $10,500
    Robinhood Auctions
    0 Bids
    Starting Bid
    $6,500
  • 18kt White Gold 3.77ctw Diamond Pendant
    Estimate
    $6,500 - $11,200

    18kt White Gold 3.77ctw Diamond Pendant

    Est.
    $6,500 - $11,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $6,500
  • 18kt White Gold 0.45ctw Diamond Pendant
    Estimate
    $2,200 - $3,300

    18kt White Gold 0.45ctw Diamond Pendant

    Est.
    $2,200 - $3,300
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,200
  • 18k Yellow Gold Spiral Necklace L 17" 13g 1.00 pc
    Estimate
    $200 - $300

    18k Yellow Gold Spiral Necklace L 17" 13g 1.00 pc

    Est.
    $200 - $300
    DuMouchelles
    2 Bids
    Current Bid
    $450
  • 11.05ctw UNHEATED MultiColor Sapphire and 4.52ctw Diamond 18K Yellow Gold Necklace (GIA CERTIFIED)
    Estimate
    $13,050 - $18,050

    11.05ctw UNHEATED MultiColor Sapphire and 4.52ctw Diamo...

    Est.
    $13,050 - $18,050
    Miami Auction Gallery
    0 Bids
    Starting Bid
    $8,050
  • 89.40ctw UNHEATED Blue Sapphire and 4.71ctw Diamond 18K Yellow Gold Necklace with White Enamel (GIA CERTIFIED)
    Estimate
    $16,345 - $21,345

    89.40ctw UNHEATED Blue Sapphire and 4.71ctw Diamond 18K...

    Est.
    $16,345 - $21,345
    Miami Auction Gallery
    0 Bids
    Starting Bid
    $11,345
  • 109.15ctw Dark Blue Sapphire and 2.97ctw Diamond 18K White Gold Necklace
    Estimate
    $12,765 - $17,765

    109.15ctw Dark Blue Sapphire and 2.97ctw Diamond 18K Wh...

    Est.
    $12,765 - $17,765
    Miami Auction Gallery
    0 Bids
    Starting Bid
    $7,765
  • Carved Carnelian Intaglio & 18K Gold Medallion, 16k Gold Chain L 20" 60g
    Estimate
    $500 - $1,000

    Carved Carnelian Intaglio & 18K Gold Medallion, 16k Gol...

    Est.
    $500 - $1,000
    DuMouchelles
    2 Bids
    Current Bid
    $400
  • 18k Yellow Gold & Enamel Strap Chain with Seal & Key, 14k Yellow Gold Double Chain L 27" 47.9g
    Estimate
    $500 - $800

    18k Yellow Gold & Enamel Strap Chain with Seal & Key, 1...

    Est.
    $500 - $800
    DuMouchelles
    0 Bids
    Starting Bid
    $375
  • Italian Filigree Pendant 18k Gold Filigree Pendant with Photo Locket, Victorian Chain L 16" 20g
    Estimate
    $200 - $400

    Italian Filigree Pendant 18k Gold Filigree Pendant with...

    Est.
    $200 - $400
    DuMouchelles
    2 Bids
    Current Bid
    $150
  • Ralco (Swiss) 18k White Gold, Diamond & Blue Guilloche Enamel 17-Jewel Pendant Watch with Chain, 1920 L 22" Dia. 1" 38g
    Estimate
    $600 - $1,000

    Ralco (Swiss) 18k White Gold, Diamond & Blue Guilloche ...

    Est.
    $600 - $1,000
    DuMouchelles
    1 Bid
    Current Bid
    $450
  • Italian 18k White & Yellow Gold And Diamond Pendant H 2" W 1" Depth 0.8" 8.5g 1.00 Pair
    Estimate
    $600 - $800

    Italian 18k White & Yellow Gold And Diamond Pendant H 2...

    Est.
    $600 - $800
    DuMouchelles
    1 Bid
    Current Bid
    $450
  • Coral Beaded Five-Strand Necklace, 18k Yellow Gold Buckle L 17.5" 148g
    Estimate
    $400 - $600

    Coral Beaded Five-Strand Necklace, 18k Yellow Gold Buck...

    Est.
    $400 - $600
    DuMouchelles
    0 Bids
    Starting Bid
    $300
  • 18k Gold Chain, Snake with Ruby Eyes L 22" 19.5g
    Estimate
    $700 - $1,000

    18k Gold Chain, Snake with Ruby Eyes L 22" 19.5g

    Est.
    $700 - $1,000
    DuMouchelles
    4 Bids
    Current Bid
    $1,200
  • 18K Gold Locket on 14K Gold Chain, Ca. 1900 L 16" 25g 1.00 pc
    Estimate
    $300 - $500

    18K Gold Locket on 14K Gold Chain, Ca. 1900 L 16" 25g 1...

    Est.
    $300 - $500
    DuMouchelles
    2 Bids
    Current Bid
    $200
  • 14k Watch Chain, 18k Gold Diamond Form Pendant, Ca. 1920 L 15" 30.3g
    Estimate
    $500 - $800

    14k Watch Chain, 18k Gold Diamond Form Pendant, Ca. 192...

    Est.
    $500 - $800
    DuMouchelles
    3 Bids
    Current Bid
    $700
  • Alor 18k and Steel Cable Necklace
    Estimate
    $700 - $800

    Alor 18k and Steel Cable Necklace

    Est.
    $700 - $800
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $350
    Buy Now Price
    $700
  • Roberto Coin 18k Gold Diamond Bollicine Necklace
    Estimate
    $800 - $100

    Roberto Coin 18k Gold Diamond Bollicine Necklace

    Est.
    $800 - $100
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $400
    Buy Now Price
    $800
  • Roberto Coin 18k Gold Pendant Necklace with Diamond Accent
    Estimate
    $500 - $700

    Roberto Coin 18k Gold Pendant Necklace with Diamond Acc...

    Est.
    $500 - $700
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $250
    Buy Now Price
    $500
  • Roberto Coin 18k Gold Pendant Necklace with Diamond Accent
    Estimate
    $500 - $700

    Roberto Coin 18k Gold Pendant Necklace with Diamond Acc...

    Est.
    $500 - $700
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $250
    Buy Now Price
    $500
  • Roberto Coin 18k Gold Diamond Bollicine Pendant Necklace
    Estimate
    $700 - $900

    Roberto Coin 18k Gold Diamond Bollicine Pendant Necklac...

    Est.
    $700 - $900
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $350
  • Roberto Coin 18k Gold Chic and Shine Necklace
    Estimate
    $600 - $800

    Roberto Coin 18k Gold Chic and Shine Necklace

    Est.
    $600 - $800
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $300
  • Roberto Coin Mauresque 18k Gold and Diamond Earrings
    Estimate
    $1,200 - $1,800

    Roberto Coin Mauresque 18k Gold and Diamond Earrings

    Est.
    $1,200 - $1,800
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $600
    Buy Now Price
    $1,200
  • Ippolita Lollipop 18k Mother of Pearl Initial Letter Charm
    Estimate
    $300 - $400

    Ippolita Lollipop 18k Mother of Pearl Initial Letter Ch...

    Est.
    $300 - $400
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $150
  • Ippolita Lollipop 18k Mother of Pearl Initial Letter Charm
    Estimate
    $300 - $400

    Ippolita Lollipop 18k Mother of Pearl Initial Letter Ch...

    Est.
    $300 - $400
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $150
    Buy Now Price
    $300