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  • 127.00-Carat Amethyst Loose Gemstone
    Estimate
    $500 - $900

    127.00-Carat Amethyst Loose Gemstone

    Est.
    $500 - $900
    Fortuna Auction
    0 Bids
    Starting Bid
    $250
  • 70.70-Carat Aquamarine Loose Gemstone
    Estimate
    $600 - $900

    70.70-Carat Aquamarine Loose Gemstone

    Est.
    $600 - $900
    Fortuna Auction
    0 Bids
    Starting Bid
    $300
  • 32.14-Carat Kunzite Loose Gemstone, GIA Certified
    Estimate
    $4,000 - $5,000

    32.14-Carat Kunzite Loose Gemstone, GIA Certified

    Est.
    $4,000 - $5,000
    Fortuna Auction
    0 Bids
    Starting Bid
    $800
  • 5.61-Carat Fancy Cushion Cut Pink Tourmaline Loose Stone
    Estimate
    $600 - $1,000

    5.61-Carat Fancy Cushion Cut Pink Tourmaline Loose Stone

    Est.
    $600 - $1,000
    Fortuna Auction
    0 Bids
    Starting Bid
    $500
  • GIA 2.14 ct. Extremely Rare Natural Color Change Russian Alexandrite Heart Cut Gemstone
    Estimate
    $203,300 - $224,700

    GIA 2.14 ct. Extremely Rare Natural Color Change Russian Alexandrite Heart Cut Gemstone

    Est.
    $203,300 - $224,700
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $12,500
  • 41.34-Carat Pear Shape Kunzite
    Estimate
    $2,000 - $3,000

    41.34-Carat Pear Shape Kunzite

    Est.
    $2,000 - $3,000
    Fortuna Auction
    0 Bids
    Starting Bid
    $800
  • 4.55-Carat Unheated Ruby, GIA Certified
    Estimate
    $4,000 - $6,000

    4.55-Carat Unheated Ruby, GIA Certified

    Est.
    $4,000 - $6,000
    Fortuna Auction
    0 Bids
    Starting Bid
    $3,000
  • 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
    $2,500
  • GIA 9.75 ct. Cushion Emerald & Diamond Cocktail Ring in 14k White Gold
    Estimate
    $32,475 - $37,595

    GIA 9.75 ct. Cushion Emerald & Diamond Cocktail Ring in 14k White Gold

    Est.
    $32,475 - $37,595
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $2,500
  • Percossi Papi Pearl, Gemstone & Enamel Necklace
    Estimate
    $20 - $2,000

    Percossi Papi Pearl, Gemstone & Enamel Necklace

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    1 Bid
    Current Bid
    $10
  • Czech Glass Gemstone Brass Locket Pendant
    Estimate
    $20 - $2,000

    Czech Glass Gemstone Brass Locket Pendant

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    1 Bid
    Current Bid
    $10
  • SEAMAN SCHEPPS 18K YELLOW GOLD COLORED GEMSTONE EARRINGS
    Estimate
    $2,600 - $5,200

    SEAMAN SCHEPPS 18K YELLOW GOLD COLORED GEMSTONE EARRINGS

    Est.
    $2,600 - $5,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,600
  • 18K YELLOW GOLD 4.80CT DIAMOND AND COLORED GEMSTONE FLOWER EARRINGS
    Estimate
    $6,000 - $12,000

    18K YELLOW GOLD 4.80CT DIAMOND AND COLORED GEMSTONE FLOWER EARRINGS

    Est.
    $6,000 - $12,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $6,000
  • Vintage Multi-Colored Gemstone and Enamel Dragon Brooch
    Estimate
    $10,000 - $12,000

    Vintage Multi-Colored Gemstone and Enamel Dragon Brooch

    Est.
    $10,000 - $12,000
    Fortuna Auction
    0 Bids
    Starting Bid
    $6,500
  • Vintage Multi-Gemstone Scarab Gold Bracelet
    Estimate
    $2,000 - $3,000

    Vintage Multi-Gemstone Scarab Gold Bracelet

    Est.
    $2,000 - $3,000
    Fortuna Auction
    0 Bids
    Starting Bid
    $1,000
  • IO SI 18K WHITE GOLD 0.02CT DIAMOND AND BLUE GEMSTONE EARRINGS
    Estimate
    $1,200 - $2,400

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

    Est.
    $1,200 - $2,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,200
  • 18K WHITE GOLD FLORAL GEMSTONE PAVE DOME RING
    Estimate
    $3,300 - $6,600

    18K WHITE GOLD FLORAL GEMSTONE PAVE DOME RING

    Est.
    $3,300 - $6,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,300
  • Two 14k Victorian Brooches
    Estimate
    $20 - $2,000

    Two 14k Victorian Brooches

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    2 Bids
    Current Bid
    $110
  • Mixed Metal Stick Pin Group
    Estimate
    $20 - $2,000

    Mixed Metal Stick Pin Group

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    5 Bids
    Current Bid
    $45
  • Vintage Costume Jewelry Set
    Estimate
    $20 - $2,000

    Vintage Costume Jewelry Set

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $10
  • Pair of Art Nouveau Cufflinks
    Estimate
    $20 - $2,000

    Pair of Art Nouveau Cufflinks

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $10
  • 14K Gold Stick Pin Bouquet Brooch
    Estimate
    $20 - $2,000

    14K Gold Stick Pin Bouquet Brooch

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    2 Bids
    Current Bid
    $40
  • 14K WHITE GOLD 0.08CT DIAMOND AND SAPPHIRE PENDANT NECKLACE
    Estimate
    $280 - $560

    14K WHITE GOLD 0.08CT DIAMOND AND SAPPHIRE PENDANT NECKLACE

    Est.
    $280 - $560
    Robinhood Auctions
    0 Bids
    Starting Bid
    $280
  • CASATO 18K ROSE GOLD 0.78CT DIAMOND AND AMETHYST RING
    Estimate
    $1,700 - $3,400

    CASATO 18K ROSE GOLD 0.78CT DIAMOND AND AMETHYST RING

    Est.
    $1,700 - $3,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,700
  • 18K WHITE GOLD 0.72CT DIAMOND, BLUE ZIRCON, AND TOURMALINE EARRINGS
    Estimate
    $1,700 - $3,400

    18K WHITE GOLD 0.72CT DIAMOND, BLUE ZIRCON, AND TOURMALINE EARRINGS

    Est.
    $1,700 - $3,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,700
  • Brooch and Necklace Assortment
    Estimate
    $20 - $2,000

    Brooch and Necklace Assortment

    Est.
    $20 - $2,000
    Associated Estate & Apprais...
    0 Bids
    Starting Bid
    $10
  • GIA 10.91 ct. Bluish Violet Tanzanite & Diamond Cocktail Ring Set in 18k Yellow Gold
    Estimate
    $21,970 - $23,889

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

    Est.
    $21,970 - $23,889
    Reserve Stock Auctions
    0 Bids
    Starting Bid
    $5,000
  • TIFFANY & CO. FIREWORKS 18K YELLOW GOLD AMETHYST BROOCH
    Estimate
    $3,300 - $6,600

    TIFFANY & CO. FIREWORKS 18K YELLOW GOLD AMETHYST BROOCH

    Est.
    $3,300 - $6,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,300
  • PLATINUM 0.55CT DIAMOND AND SAPPHIRE PENDANT
    Estimate
    $600 - $1,200

    PLATINUM 0.55CT DIAMOND AND SAPPHIRE PENDANT

    Est.
    $600 - $1,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $600
  • PLATINUM 0.84CT DIAMOND AND SAPPHIRE RING
    Estimate
    $1,900 - $3,800

    PLATINUM 0.84CT DIAMOND AND SAPPHIRE RING

    Est.
    $1,900 - $3,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,900
  • PLATINUM 0.11CT DIAMOND AND RUBY RING
    Estimate
    $550 - $1,100

    PLATINUM 0.11CT DIAMOND AND RUBY RING

    Est.
    $550 - $1,100
    Robinhood Auctions
    0 Bids
    Starting Bid
    $550
  • CARTIER PANTHERE 18K WHITE GOLD CUFFLINKS
    Estimate
    $7,000 - $14,000

    CARTIER PANTHERE 18K WHITE GOLD CUFFLINKS

    Est.
    $7,000 - $14,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $7,000
  • PLATINUM 7.40CT DIAMOND AND OPAL NECKLACE
    Estimate
    $9,000 - $18,000

    PLATINUM 7.40CT DIAMOND AND OPAL NECKLACE

    Est.
    $9,000 - $18,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $9,000
  • CASATO 18K YELLOW GOLD DIAMOND AND CHALCEDONY DROP EARRINGS
    Estimate
    $1,500 - $3,000

    CASATO 18K YELLOW GOLD DIAMOND AND CHALCEDONY DROP EARRINGS

    Est.
    $1,500 - $3,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,500
  • PLATINUM 0.26CT DIAMOND AND SAPPHIRE RING
    Estimate
    $1,100 - $2,200

    PLATINUM 0.26CT DIAMOND AND SAPPHIRE RING

    Est.
    $1,100 - $2,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,100
  • PLATINUM 5.50CT DIAMOND AND OPAL NECKLACE
    Estimate
    $8,000 - $16,000

    PLATINUM 5.50CT DIAMOND AND OPAL NECKLACE

    Est.
    $8,000 - $16,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $8,000
  • PLATINUM 0.80CT DIAMOND AND RHODOLITE GARNET PENDANT NECKLACE
    Estimate
    $1,500 - $3,000

    PLATINUM 0.80CT DIAMOND AND RHODOLITE GARNET PENDANT NECKLACE

    Est.
    $1,500 - $3,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,500
  • PLATINUM 0.25CT DIAMOND AND RUBY PENDANT
    Estimate
    $550 - $1,100

    PLATINUM 0.25CT DIAMOND AND RUBY PENDANT

    Est.
    $550 - $1,100
    Robinhood Auctions
    0 Bids
    Starting Bid
    $550
  • PLATINUM 0.14CT DIAMOND AND CATS EYE PENDANT
    Estimate
    $420 - $840

    PLATINUM 0.14CT DIAMOND AND CATS EYE PENDANT

    Est.
    $420 - $840
    Robinhood Auctions
    0 Bids
    Starting Bid
    $420
  • PLATINUM 0.78CT DIAMOND AND PERIDOT RING
    Estimate
    $2,400 - $4,800

    PLATINUM 0.78CT DIAMOND AND PERIDOT RING

    Est.
    $2,400 - $4,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,400
  • 14K YELLOW GOLD 0.13CT DIAMOND AND AMETHYST PENDANT NECKLACE
    Estimate
    $360 - $720

    14K YELLOW GOLD 0.13CT DIAMOND AND AMETHYST PENDANT NECKLACE

    Est.
    $360 - $720
    Robinhood Auctions
    0 Bids
    Starting Bid
    $360
  • PLATINUM 0.75CT DIAMOND AND AQUAMARINE RING
    Estimate
    $1,600 - $3,200

    PLATINUM 0.75CT DIAMOND AND AQUAMARINE RING

    Est.
    $1,600 - $3,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,600
  • JOHN HARDY 18K WHITE AND YELLOW GOLD 4.0CT AQUAMARINE PENDANT
    Estimate
    $1,600 - $3,200

    JOHN HARDY 18K WHITE AND YELLOW GOLD 4.0CT AQUAMARINE PENDANT

    Est.
    $1,600 - $3,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,600
  • 14K WHITE GOLD 0.22CT DIAMOND AND RUBY NECKLACE
    Estimate
    $450 - $900

    14K WHITE GOLD 0.22CT DIAMOND AND RUBY NECKLACE

    Est.
    $450 - $900
    Robinhood Auctions
    0 Bids
    Starting Bid
    $450
  • PLATINUM 1.80CT DIAMOND AND TANZANITE RING
    Estimate
    $3,300 - $6,600

    PLATINUM 1.80CT DIAMOND AND TANZANITE RING

    Est.
    $3,300 - $6,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,300
  • 14K WHITE GOLD 0.07CT DIAMOND AND EMERALD PENDANT NECKLACE
    Estimate
    $200 - $400

    14K WHITE GOLD 0.07CT DIAMOND AND EMERALD PENDANT NECKLACE

    Est.
    $200 - $400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $200
  • PLATINUM 0.52CT DIAMOND AND EMERALD RING
    Estimate
    $1,900 - $3,800

    PLATINUM 0.52CT DIAMOND AND EMERALD RING

    Est.
    $1,900 - $3,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,900
  • PLATINUM 0.27CT DIAMOND AND RUBY RING
    Estimate
    $700 - $1,400

    PLATINUM 0.27CT DIAMOND AND RUBY RING

    Est.
    $700 - $1,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $700

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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