358 Results
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  • GIA 0.63 ct. Natural Round Loose Diamond I, SI-1
    Estimate
    $2,089 - $2,880

    GIA 0.63 ct. Natural Round Loose Diamond I, SI-1

    Est.
    $2,089 - $2,880
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $100
  • 5 Unmounted Apple Green Chrysoprase Cabochons
    Estimate
    $200 - $400

    5 Unmounted Apple Green Chrysoprase Cabochons

    Est.
    $200 - $400
    Circle Auction
    0 Bids
    Starting Bid
    $100
  • AGLS 4.75 ct. Loose Natural Padparadscha Sapphire
    Estimate
    $78,743 - $83,125

    AGLS 4.75 ct. Loose Natural Padparadscha Sapphire

    Est.
    $78,743 - $83,125
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $5,000
  • GIA 2.14 ct. Extremely Rare Natural Color Change Russian Alexandrite
    Estimate
    $203,300 - $224,700

    GIA 2.14 ct. Extremely Rare Natural Color Change Russian Alexandrite

    Est.
    $203,300 - $224,700
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $100,000
  • GIA 19.49 ct. Tanzanite & Diamond Ring in 14k White Gold
    Estimate
    $21,475 - $24,911

    GIA 19.49 ct. Tanzanite & Diamond Ring in 14k White Gold

    Est.
    $21,475 - $24,911
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $5,000
  • Gemstone and Silver Brooch
    Estimate
    $200 - $400

    Gemstone and Silver Brooch

    Est.
    $200 - $400
    Kodner Galleries
    0 Bids
    Starting Bid
    $100
  • Tennis Racket Pendant with Gemstones in Gold
    Estimate
    $1,000 - $3,000

    Tennis Racket Pendant with Gemstones in Gold

    Est.
    $1,000 - $3,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $600
  • Gemstone and 14K Pendant / Brooch
    Estimate
    $600 - $800

    Gemstone and 14K Pendant / Brooch

    Est.
    $600 - $800
    Kodner Galleries
    0 Bids
    Starting Bid
    $300
  • Bvlgari Allegra Multi Gemstone Diamond 18K Yellow Gold Bracelet
    Estimate
    $7,000 - $10,000

    Bvlgari Allegra Multi Gemstone Diamond 18K Yellow Gold Bracelet

    Est.
    $7,000 - $10,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $1,000
  •  Judith Ripka Sterling & Pink Gemstone Jewelry
    Estimate
    $150 - $250

    Judith Ripka Sterling & Pink Gemstone Jewelry

    Est.
    $150 - $250
    Everard Auctions and Apprai...
    1 Bid
    Current Bid
    $90
  • Group of Sterling Silver and Gemstone Jewelry, 6 pcs
    Estimate
    $80 - $120

    Group of Sterling Silver and Gemstone Jewelry, 6 pcs

    Est.
    $80 - $120
    Everard Auctions and Apprai...
    0 Bids
    Starting Bid
    $50
  • GUCCI HORSEBIT 18K YELLOW GOLD PURPLE GEMSTONE DANGLE EARRINGS
    Estimate
    $1,600 - $6,400

    GUCCI HORSEBIT 18K YELLOW GOLD PURPLE GEMSTONE DANGLE EARRINGS

    Est.
    $1,600 - $6,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,600
  • 4 Sterling & Gemstone Judith Ripka Bangles & 5 Rings
    Estimate
    $150 - $250

    4 Sterling & Gemstone Judith Ripka Bangles & 5 Rings

    Est.
    $150 - $250
    Everard Auctions and Apprai...
    1 Bid
    Current Bid
    $90
  • DENISE ROBERGE 18K YELLOW GOLD MOONSTONE AND MULTICOLORED GEMSTONE CLIP-ON EARRINGS
    Estimate
    $6,500 - $26,000

    DENISE ROBERGE 18K YELLOW GOLD MOONSTONE AND MULTICOLORED GEMSTONE CLIP-ON EARRINGS

    Est.
    $6,500 - $26,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $6,500
  • Roberto Vengoechea Custom 14K & Gemstone Ring, Sz 9
    Estimate
    $3,000 - $5,000

    Roberto Vengoechea Custom 14K & Gemstone Ring, Sz 9

    Est.
    $3,000 - $5,000
    Everard Auctions and Apprai...
    0 Bids
    Starting Bid
    $1,800
  • IO SI 18K WHITE GOLD 0.02CT DIAMOND AND BLUE GEMSTONE EARRINGS
    Estimate
    $1,200 - $4,800

    IO SI 18K WHITE GOLD 0.02CT DIAMOND AND BLUE GEMSTONE EARRINGS

    Est.
    $1,200 - $4,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,200
  • Oliver Hardy Sterling Silver, Gold, and Gemstone Case
    Estimate
    $300 - $500

    Oliver Hardy Sterling Silver, Gold, and Gemstone Case

    Est.
    $300 - $500
    Abell Auction Company
    2 Bids
    Current Bid
    $175
  • ANTONINI 18K YELLOW GOLD GEMSTONE PIN
    Estimate
    $1,300 - $5,200

    ANTONINI 18K YELLOW GOLD GEMSTONE PIN

    Est.
    $1,300 - $5,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,300
  • Black and White Diamond and 18K Flower Brooch
    Estimate
    $8,000 - $12,000

    Black and White Diamond and 18K Flower Brooch

    Est.
    $8,000 - $12,000
    Everard Auctions and Apprai...
    0 Bids
    Starting Bid
    $5,000
  • Diamond Blue Agate Golf Club Birdie 18K White Gold Charm Pendant Necklace
    Estimate
    $1,000 - $2,000

    Diamond Blue Agate Golf Club Birdie 18K White Gold Charm Pendant Necklace

    Est.
    $1,000 - $2,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $400
  • Chopard Happy Diamonds Crown Ruby Sapphire Emerald Diamond 18K Yellow Gold Pendant
    Estimate
    $5,000 - $7,000

    Chopard Happy Diamonds Crown Ruby Sapphire Emerald Diamond 18K Yellow Gold Pendant

    Est.
    $5,000 - $7,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $800
  • Camrose and Kross 18kt Plated Golden Egg Bracelet
    Estimate
    $75 - $150

    Camrose and Kross 18kt Plated Golden Egg Bracelet

    Est.
    $75 - $150
    Dana Auctions LLC
    0 Bids
    Starting Bid
    $10
  • 18K Gold Tennis Racket Pendant Necklace
    Estimate
    $1,400 - $4,000

    18K Gold Tennis Racket Pendant Necklace

    Est.
    $1,400 - $4,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $800
  • PLATINUM 2.15CT DIAMOND AND EMERALD RING
    Estimate
    $7,000 - $28,000

    PLATINUM 2.15CT DIAMOND AND EMERALD RING

    Est.
    $7,000 - $28,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $7,000
  • Tiffany & Co. Paloma Picasso Leaf Motif Colored Stone 18K Yellow Gold Bracelet
    Estimate
    $2,000 - $3,000

    Tiffany & Co. Paloma Picasso Leaf Motif Colored Stone 18K Yellow Gold Bracelet

    Est.
    $2,000 - $3,000
    Victorins Auctions
    1 Bid
    Current Bid
    $600
  • 18K Gold Golf Club Pendant Necklace with Diamonds
    Estimate
    $900 - $2,500

    18K Gold Golf Club Pendant Necklace with Diamonds

    Est.
    $900 - $2,500
    Victorins Auctions
    0 Bids
    Starting Bid
    $500
  • Pomellato Nudo Blue Topaz Diamond 18K Yellow Gold Open Cuff Bracelet
    Estimate
    $6,500 - $9,500

    Pomellato Nudo Blue Topaz Diamond 18K Yellow Gold Open Cuff Bracelet

    Est.
    $6,500 - $9,500
    Victorins Auctions
    0 Bids
    Starting Bid
    $2,000
  • Fred Flushed Set Emerald 18K Yellow Gold Dome Ring
    Estimate
    $3,500 - $5,500

    Fred Flushed Set Emerald 18K Yellow Gold Dome Ring

    Est.
    $3,500 - $5,500
    Victorins Auctions
    0 Bids
    Starting Bid
    $1,000
  • Tiger's Eye & Diamond Gold Huggie Earrings
    Estimate
    $2,000 - $3,500

    Tiger's Eye & Diamond Gold Huggie Earrings

    Est.
    $2,000 - $3,500
    Victorins Auctions
    0 Bids
    Starting Bid
    $800
  • Chrome Hearts Baby Fat Pink Sapphire Cross Gold Pendant
    Estimate
    $4,000 - $5,000

    Chrome Hearts Baby Fat Pink Sapphire Cross Gold Pendant

    Est.
    $4,000 - $5,000
    Victorins Auctions
    1 Bid
    Current Bid
    $800
  • 7 Beaded Necklaces
    Estimate
    $50 - $100

    7 Beaded Necklaces

    Est.
    $50 - $100
    Dana Auctions LLC
    0 Bids
    Starting Bid
    $10
  • Silver Streak Lapis Ring - Sterling and 14K
    Estimate
    $50 - $100

    Silver Streak Lapis Ring - Sterling and 14K

    Est.
    $50 - $100
    Dana Auctions LLC
    0 Bids
    Starting Bid
    $10
  • Camrose and Kross 18kt Plated Bangle Bracelet
    Estimate
    $75 - $150

    Camrose and Kross 18kt Plated Bangle Bracelet

    Est.
    $75 - $150
    Dana Auctions LLC
    0 Bids
    Starting Bid
    $10
  • Van Cleef & Arpels Vintage Alhambra Turquoise Pendant Necklace 18K White Gold
    Estimate
    $4,000 - $7,000

    Van Cleef & Arpels Vintage Alhambra Turquoise Pendant Necklace 18K White Gold

    Est.
    $4,000 - $7,000
    Victorins Auctions
    1 Bid
    Current Bid
    $1,000
  • 3 Costume Necklace and Earrings Sets
    Estimate
    $50 - $150

    3 Costume Necklace and Earrings Sets

    Est.
    $50 - $150
    Dana Auctions LLC
    0 Bids
    Starting Bid
    $10
  • PLATINUM 14.40CT AQUAMARINE PENDANT
    Estimate
    $2,000 - $8,000

    PLATINUM 14.40CT AQUAMARINE PENDANT

    Est.
    $2,000 - $8,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,000
  • GEORG JENSEN VIVIANNA SILVER AMETHYST AND DIAMOND PENDANT
    Estimate
    $160 - $640

    GEORG JENSEN VIVIANNA SILVER AMETHYST AND DIAMOND PENDANT

    Est.
    $160 - $640
    Robinhood Auctions
    0 Bids
    Starting Bid
    $160
  • Bvlgari Assioma Diamond Dial Gold Watch
    Estimate
    $4,800 - $12,000

    Bvlgari Assioma Diamond Dial Gold Watch

    Est.
    $4,800 - $12,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $3,840
  • GIA 10.91 ct. Tanzanite & Diamond Cocktail Ring Set in 18k Yellow Gold
    Estimate
    $21,970 - $23,889

    GIA 10.91 ct. Tanzanite & Diamond Cocktail Ring Set in 18k Yellow Gold

    Est.
    $21,970 - $23,889
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $500
  • Cartier Blue Sapphire Tennis Line 18K White Gold Bracelet
    Estimate
    $5,000 - $7,500

    Cartier Blue Sapphire Tennis Line 18K White Gold Bracelet

    Est.
    $5,000 - $7,500
    Victorins Auctions
    1 Bid
    Current Bid
    $1,000
  • 14K YELLOW GOLD DIAMOND AND RUBY RETRO BROOCH
    Estimate
    $2,600 - $10,400

    14K YELLOW GOLD DIAMOND AND RUBY RETRO BROOCH

    Est.
    $2,600 - $10,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,600
  • ANTIQUE 14K YELLOW GOLD AMETHYST EARRINGS
    Estimate
    $1,700 - $6,800

    ANTIQUE 14K YELLOW GOLD AMETHYST EARRINGS

    Est.
    $1,700 - $6,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,700
  • POMELLATO TANGO 18K ROSE GOLD PINK TOURMALINE EARRINGS
    Estimate
    $3,000 - $12,000

    POMELLATO TANGO 18K ROSE GOLD PINK TOURMALINE EARRINGS

    Est.
    $3,000 - $12,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,000
  • KONSTANTINO 18K YELLOW GOLD TAHITIAN PEARL AND TOURMALINE NECKLACE
    Estimate
    $4,200 - $16,800

    KONSTANTINO 18K YELLOW GOLD TAHITIAN PEARL AND TOURMALINE NECKLACE

    Est.
    $4,200 - $16,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $4,200
  • PLATINUM 0.75CT DIAMOND AND RUBY PENDANT NECKLACE
    Estimate
    $900 - $3,600

    PLATINUM 0.75CT DIAMOND AND RUBY PENDANT NECKLACE

    Est.
    $900 - $3,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $900
  • Cartier Panthere Diamond Emerald Black Lacquer 18K Yellow Gold Vintage Ring
    Estimate
    $5,000 - $7,000

    Cartier Panthere Diamond Emerald Black Lacquer 18K Yellow Gold Vintage Ring

    Est.
    $5,000 - $7,000
    Victorins Auctions
    1 Bid
    Current Bid
    $900
  • Chopard Imperiale Amethyst 18K Rose Gold Earrings
    Estimate
    $2,500 - $4,000

    Chopard Imperiale Amethyst 18K Rose Gold Earrings

    Est.
    $2,500 - $4,000
    Victorins Auctions
    0 Bids
    Starting Bid
    $600
  • Dan Chee Navajo Sterling Turquoise Squash Blossom Necklace, Handcrafted
    Estimate
    $700 - $1,000

    Dan Chee Navajo Sterling Turquoise Squash Blossom Necklace, Handcrafted

    Est.
    $700 - $1,000
    Circle Auction
    2 Bids
    Current Bid
    $375

Looking as lovely as when set in jewelry, loose diamonds and gemstones offer consumers additional benefits of matching the unmounted stone to desired specifications and quality characteristics to create a truly unique piece of custom jewelry, such as an engagement ring or milestone gift. Indulge yourself in a world of stunning diamond collections to glistening gemstones dating from the 19th to 21st century on Bidsquare, the online auction site providing authentic gemstone diamonds straight to consumers from verified sellers all over the world.

Basics of Loose Diamonds
Loose diamonds are diamonds that have not been set into jewelry like rings or earrings. The rarity and beauty of diamonds are affected by many variables, including Cut, Color, Clarity, and Carat Weight, the 4Cs factors that determine the price of the unmounted stone. Wholesale diamonds are priced by carat, and loose diamond prices grow exponentially with every full carat. Hence, the price difference between 2.9 carat and 3.1 carat diamonds could be hundreds of dollars, if not higher.

Although all 4Cs contribute to a diamond's beauty, cut and clarity have a greater effect on a diamond's stability. A diamond's cut refers to the shape and also the proportions in which the diamond has been cut. Different diamond shapes are reflections of the proportions and quality of the rough diamond as well as popular taste. Some of the most popular shapes of diamonds are the Round, Oval, Emerald, Baguette, Marquise Square, Princess cuts, in addition to the availability of various specialty shapes. Diamonds with pointed tips should be stored and handled carefully. Clarity is determined by the presence or absence of visible flaws in the diamond. A diamond's brilliance can be altered by surface blemishes or internal inclusions, which directly impact its value. The least color diamonds are more valuable, the exceptions are the colored diamonds, especially the pinks.

Loose certified diamonds come with verifiable documentation attesting to the jewel's quality, whether purchased as an investment or for mounting. The price of loose diamonds for sale is 50-70% less than its retail price because of cutting unnecessary costs as with mounted stones. Assessing the quality is easier with loose diamonds due to difficulty in hiding imperfections that would otherwise be easy with mountings.

Quick facts about Loose Diamonds and Gemstones

  • A diamond is not always white in color.
  • The cutting process can cause a diamond to lose up to 50% of its weight.

 

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