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  • 14KT White Gold 2.15ctw London Blue Topaz and Diamond Ring
    Estimate
    $3,000 - $4,000

    14KT White Gold 2.15ctw London Blue Topaz and Diamond Ring

    Est.
    $3,000 - $4,000
    1 Great Deal Auctions
    1 Bid
    Current Bid
    $1
  • GIA Oscar Heyman No Heat Burma Ruby Ceylon Sapphire Diamond 18k Gold Floral Flower Bouquet Brooch
    Estimate
    $10,000 - $20,000

    GIA Oscar Heyman No Heat Burma Ruby Ceylon Sapphire Diamond 18k Gold Floral Flower Bouquet Brooch

    Est.
    $10,000 - $20,000
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany & Co Special Order Size 12 Ladies Unisex Eternity Wedding Band Ring 2.25CTW
    Estimate
    $3,000 - $5,000

    Tiffany & Co Special Order Size 12 Ladies Unisex Eternity Wedding Band Ring 2.25CTW

    Est.
    $3,000 - $5,000
    Hess Fine Art
    Starting Bid
    $10
  • 14KT White Gold 2.90ct Aquamarine and Diamond Ring
    Estimate
    $4,500 - $5,500

    14KT White Gold 2.90ct Aquamarine and Diamond Ring

    Est.
    $4,500 - $5,500
    1 Great Deal Auctions
    1 Bid
    Current Bid
    $1
  • Approx. 5.5ct GIA Natural Sapphire 18k Gold Fine Diamond Vintage Filigree Ring
    Estimate
    $12,000 - $15,000

    Approx. 5.5ct GIA Natural Sapphire 18k Gold Fine Diamond Vintage Filigree Ring

    Est.
    $12,000 - $15,000
    Hess Fine Art
    Starting Bid
    $10
  • Van Cleef & Arpels Colombian Emerald Circa 1960s Platinum Double Diamond Halo Ring
    Estimate
    $150,000 - $250,000

    Van Cleef & Arpels Colombian Emerald Circa 1960s Platinum Double Diamond Halo Ring

    Est.
    $150,000 - $250,000
    Hess Fine Art
    Starting Bid
    $10
  • Vintage 1.04ct Pigeons Blood Burma Ruby .82ct Diamond Platinum Ring w Report
    Estimate
    $5,000 - $6,000

    Vintage 1.04ct Pigeons Blood Burma Ruby .82ct Diamond Platinum Ring w Report

    Est.
    $5,000 - $6,000
    Hess Fine Art
    Starting Bid
    $10
  • Stunning Van Cleef Arpel Large Size 18k Gold Diamond Starburst MOP Flower Brooch Clip w/ VCA Box
    Estimate
    $20,000 - $25,000

    Stunning Van Cleef Arpel Large Size 18k Gold Diamond Starburst MOP Flower Brooch Clip w/ VCA Box

    Est.
    $20,000 - $25,000
    Hess Fine Art
    Starting Bid
    $10
  • Stunning Approx 5.55 ctw w 3.5 ct Natural Earth Mined Diamond 14k Gold Ring
    Estimate
    $4,000 - $8,000

    Stunning Approx 5.55 ctw w 3.5 ct Natural Earth Mined Diamond 14k Gold Ring

    Est.
    $4,000 - $8,000
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany & Co. 1980's Fine Diamond Brutalist Bracelet

    Tiffany & Co. 1980's Fine Diamond Brutalist Bracelet

    Hess Fine Art
    Starting Bid
    $10
  • Rare GIA  Michael Beaudry Fancy Intense Purple Pink 1ct Natural Diamond Marquise Halo Platinum Gold Ring
    Estimate
    $75,000 - $100,000

    Rare GIA Michael Beaudry Fancy Intense Purple Pink 1ct Natural Diamond Marquise Halo Platinum Gold Ring

    Est.
    $75,000 - $100,000
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany & Co Toronto Blue Jays Hugo Powell COO 14K Gold World Series Championship Ring
    Estimate
    $20,000 - $30,000

    Tiffany & Co Toronto Blue Jays Hugo Powell COO 14K Gold World Series Championship Ring

    Est.
    $20,000 - $30,000
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany 14k White Gold Diamond 2007 Superbowl New York Giants XLII Player Owned Ring w/ Box
    Estimate
    $35,000 - $50,000

    Tiffany 14k White Gold Diamond 2007 Superbowl New York Giants XLII Player Owned Ring w/ Box

    Est.
    $35,000 - $50,000
    Hess Fine Art
    Starting Bid
    $10
  • Massive Tigers Eye 18k Gold Fine Diamond Midcentury Modern Signed Statement Ring
    Estimate
    $3,000 - $5,000

    Massive Tigers Eye 18k Gold Fine Diamond Midcentury Modern Signed Statement Ring

    Est.
    $3,000 - $5,000
    Hess Fine Art
    Starting Bid
    $10
  • Signed Carl Bacher Egyptian Revival Natural Opal Emerald Ruby Diamond 14k Gold Antique Brooch
    Estimate
    $7,000 - $9,000

    Signed Carl Bacher Egyptian Revival Natural Opal Emerald Ruby Diamond 14k Gold Antique Brooch

    Est.
    $7,000 - $9,000
    Hess Fine Art
    Starting Bid
    $10
  • Strikingly Blue Approx 21ct Natural Aquamarine Diamond 14k Gold Vintage Solitaire Ring ca. 1950s
    Estimate
    $1,500 - $2,000

    Strikingly Blue Approx 21ct Natural Aquamarine Diamond 14k Gold Vintage Solitaire Ring ca. 1950s

    Est.
    $1,500 - $2,000
    Hess Fine Art
    Starting Bid
    $10
  • Vintage Buccellati Ramage 18k Gold Fine Diamond Flower Hoop Earrings
    Estimate
    $2,000 - $3,000

    Vintage Buccellati Ramage 18k Gold Fine Diamond Flower Hoop Earrings

    Est.
    $2,000 - $3,000
    Hess Fine Art
    Starting Bid
    $10
  • Jane Bohan 18k Gold Labradorite Double Strand Beaded Designer Necklace w/ 14mm Golden Pearl & Diamond Pendant
    Estimate
    $1,500 - $2,000

    Jane Bohan 18k Gold Labradorite Double Strand Beaded Designer Necklace w/ 14mm Golden Pearl & Diamond Pendant

    Est.
    $1,500 - $2,000
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany & Co. 18k Gold Double Chevron Diamond Set Shoulder Brooch For Men or Women Circa 1980
    Estimate
    $2,000 - $3,000

    Tiffany & Co. 18k Gold Double Chevron Diamond Set Shoulder Brooch For Men or Women Circa 1980

    Est.
    $2,000 - $3,000
    Hess Fine Art
    Starting Bid
    $10
  • Van Cleef & Arpels VCA Large Size Dragonfly Fine Diamond 18K White Gold Brooch Clip Pin

    Van Cleef & Arpels VCA Large Size Dragonfly Fine Diamond 18K White Gold Brooch Clip Pin

    Hess Fine Art
    Starting Bid
    $10
  • Vintage Designer Signed 18k Gold Platinum .50ctw E-F VS1-VS2 Diamond Clip on Earrings 26.1g
    Estimate
    $2,500 - $3,000

    Vintage Designer Signed 18k Gold Platinum .50ctw E-F VS1-VS2 Diamond Clip on Earrings 26.1g

    Est.
    $2,500 - $3,000
    Hess Fine Art
    Starting Bid
    $10
  • Rare 18k White Gold Roberto Coin Sapphire Diamond Cocktail Ring From Haute Couture Collection
    Estimate
    $5,000 - $7,000

    Rare 18k White Gold Roberto Coin Sapphire Diamond Cocktail Ring From Haute Couture Collection

    Est.
    $5,000 - $7,000
    Hess Fine Art
    Starting Bid
    $10
  • Vintage 14k Yellow Gold Fine Diamond Enamel Flower Brooch Pin 5.4g
    Estimate
    $500 - $700

    Vintage 14k Yellow Gold Fine Diamond Enamel Flower Brooch Pin 5.4g

    Est.
    $500 - $700
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany & Co. 18k Yellow Gold 1.14ctw Sapphire Diamond Ladies Necklace 16 Inches
    Estimate
    $3,000 - $5,000

    Tiffany & Co. 18k Yellow Gold 1.14ctw Sapphire Diamond Ladies Necklace 16 Inches

    Est.
    $3,000 - $5,000
    Hess Fine Art
    Starting Bid
    $10
  • Gorgeous GIA 3.03 Ct SI2 Oval Center 18k White Gold Diamond Halo Engagement Ring
    Estimate
    $17,500 - $22,500

    Gorgeous GIA 3.03 Ct SI2 Oval Center 18k White Gold Diamond Halo Engagement Ring

    Est.
    $17,500 - $22,500
    Hess Fine Art
    Starting Bid
    $10
  • Approx 7ct Natural Bluish Purple Tourmaline 18k Gold 1ct Fine Diamond Heavy Ring 15.7g
    Estimate
    $2,000 - $3,000

    Approx 7ct Natural Bluish Purple Tourmaline 18k Gold 1ct Fine Diamond Heavy Ring 15.7g

    Est.
    $2,000 - $3,000
    Hess Fine Art
    Starting Bid
    $10
  • 1800s Ottoman Empire 18k Gold Old Rose Cut Diamond Persian Turquoise Brooch Pendant
    Estimate
    $3,000 - $5,000

    1800s Ottoman Empire 18k Gold Old Rose Cut Diamond Persian Turquoise Brooch Pendant

    Est.
    $3,000 - $5,000
    Hess Fine Art
    Starting Bid
    $10
  • Very Art Deco Large Natural Star Sapphire Platinum Ring w/ Trillion & Round Brilliant Diamonds
    Estimate
    $3,000 - $4,000

    Very Art Deco Large Natural Star Sapphire Platinum Ring w/ Trillion & Round Brilliant Diamonds

    Est.
    $3,000 - $4,000
    Hess Fine Art
    Starting Bid
    $10
  • ca. 1930s Mens Approx 0.70ct Diamond VS G Solitaire 14k White Gold Ring Size 11.5
    Estimate
    $1,500 - $2,000

    ca. 1930s Mens Approx 0.70ct Diamond VS G Solitaire 14k White Gold Ring Size 11.5

    Est.
    $1,500 - $2,000
    Hess Fine Art
    Starting Bid
    $10
  • Bvlgari Bulgari 3.75CT Fancy Yellow Marquise Diamond 18K Gold Ring Saks 5th Ave Provenance
    Estimate
    $35,000 - $50,000

    Bvlgari Bulgari 3.75CT Fancy Yellow Marquise Diamond 18K Gold Ring Saks 5th Ave Provenance

    Est.
    $35,000 - $50,000
    Hess Fine Art
    Starting Bid
    $10
  • Antique Natural Red Coral Large Floral Motif Solid Gold Victorian Era Brooch or Pendant
    Estimate
    $500 - $1,000

    Antique Natural Red Coral Large Floral Motif Solid Gold Victorian Era Brooch or Pendant

    Est.
    $500 - $1,000
    Hess Fine Art
    Starting Bid
    $10
  • Stunning Color Green Jadeite Jade Platinum Diamond Ladies Vintage Saddle Ring
    Estimate
    $2,000 - $3,000

    Stunning Color Green Jadeite Jade Platinum Diamond Ladies Vintage Saddle Ring

    Est.
    $2,000 - $3,000
    Hess Fine Art
    Starting Bid
    $10
  • Approx. 0.60ct Old Euro Cut Diamond Very Clean Natural Ruby 14k Gold Antique Ring
    Estimate
    $800 - $1,000

    Approx. 0.60ct Old Euro Cut Diamond Very Clean Natural Ruby 14k Gold Antique Ring

    Est.
    $800 - $1,000
    Hess Fine Art
    Starting Bid
    $10
  • Heavy 18k Gold 12.5mm Cultured Tahitian South Sea Pearl Fine White Diamond Artist Signed Statement Ring
    Estimate
    $2,000 - $3,000

    Heavy 18k Gold 12.5mm Cultured Tahitian South Sea Pearl Fine White Diamond Artist Signed Statement Ring

    Est.
    $2,000 - $3,000
    Hess Fine Art
    Starting Bid
    $10
  • Midcentury 25ct Fine Color Aquamarine 14k White Gold Old Cut Diamond 1940s Swirl Statetment Ring
    Estimate
    $1,000 - $1,500

    Midcentury 25ct Fine Color Aquamarine 14k White Gold Old Cut Diamond 1940s Swirl Statetment Ring

    Est.
    $1,000 - $1,500
    Hess Fine Art
    Starting Bid
    $10
  • Tiffany & Co Schlumberger Studios Fine Diamond Yellow Sapphire 18K Gold Platinum Flower Bloom Clip Brooch
    Estimate
    $12,000 - $16,000

    Tiffany & Co Schlumberger Studios Fine Diamond Yellow Sapphire 18K Gold Platinum Flower Bloom Clip Brooch

    Est.
    $12,000 - $16,000
    Hess Fine Art
    Starting Bid
    $10
  • Lot of Antique and Vintage loose Diamond Pearl Gemstones
    Estimate
    $300 - $500

    Lot of Antique and Vintage loose Diamond Pearl Gemstones

    Est.
    $300 - $500
    Locati LLC
    0 Bids
    Starting Bid
    $150
  • Cushion Cut Loose Kunzite
    Estimate
    $2,000 - $3,000

    Cushion Cut Loose Kunzite

    Est.
    $2,000 - $3,000
    Newel Auctions
    Starting Bid
    $750
  • (4) Loose Opals
    Estimate
    $200 - $400

    (4) Loose Opals

    Est.
    $200 - $400
    Sarasota Estate Auction
    0 Bids
    Starting Bid
    $100
  • Three Loose Natural Scarabs
    Estimate
    $40 - $60

    Three Loose Natural Scarabs

    Est.
    $40 - $60
    Peterborough Auctions LLC
    0 Bids
    Starting Bid
    $20
  • Sparkling Huge 7.5 Ct White E-F VVs1 Fire Moissanite Solitaire
    Estimate
    $800 - $1,000

    Sparkling Huge 7.5 Ct White E-F VVs1 Fire Moissanite Solitaire

    Est.
    $800 - $1,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Sparkling 5 Ct VVs1 Bright Lemon Yellow Fire Moissanite Solitaire
    Estimate
    $500 - $1,000

    Sparkling 5 Ct VVs1 Bright Lemon Yellow Fire Moissanite Solitaire

    Est.
    $500 - $1,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 14k Yellow Gold and 8.9ct Pear-Shaped Natural Color Change Zultanite Turkish Diaspore Pendant Necklace L 18" 2.7 grams 1 PC
    Estimate
    $1,500 - $3,000

    14k Yellow Gold and 8.9ct Pear-Shaped Natural Color Change Zultanite Turkish Diaspore Pendant Necklace L 18" 2.7 grams 1 PC

    Est.
    $1,500 - $3,000
    DuMouchelles
    0 Bids
    Starting Bid
    $1,000
  • Faceted Pink Tourmaline Bead Strands
    Estimate
    $100 - $200

    Faceted Pink Tourmaline Bead Strands

    Est.
    $100 - $200
    Sarasota Estate Auction
    0 Bids
    Starting Bid
    $50
  • 5 Piece Gold Plate Fashion Jewelry Lot
    Estimate
    $300 - $500

    5 Piece Gold Plate Fashion Jewelry Lot

    Est.
    $300 - $500
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 5 Ct VVs1 Russian Color Change Lab Simulated Alexandrite Solitaire
    Estimate
    $450 - $650

    5 Ct VVs1 Russian Color Change Lab Simulated Alexandrite Solitaire

    Est.
    $450 - $650
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 18K White Gold Wedding Band and Citrine Stone.
    Estimate
    $200 - $300

    18K White Gold Wedding Band and Citrine Stone.

    Est.
    $200 - $300
    Locati LLC
    0 Bids
    Starting Bid
    $100
  • 14K White Gold 1.53ctw Loose Diamond
    Estimate
    $900 - $2,250

    14K White Gold 1.53ctw Loose Diamond

    Est.
    $900 - $2,250
    Robinhood Auctions
    0 Bids
    Starting Bid
    $900

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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