915 Results
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  • Natural Certified 2.91 Ct  Australian Rainbow Opal
    Estimate
    $400 - $500

    Natural Certified 2.91 Ct Australian Rainbow Opal

    Est.
    $400 - $500
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • (4) Glass Vials of Various Real Stones
    Estimate
    $80 - $125

    (4) Glass Vials of Various Real Stones

    Est.
    $80 - $125
    Sarasota Estate Auction
    0 Bids
    Starting Bid
    $40
  • Impressive 13.01 Carat Pear Cut Natural Amethyst
    Estimate
    $400 - $600

    Impressive 13.01 Carat Pear Cut Natural Amethyst

    Est.
    $400 - $600
    Sarasota Estate Auction
    0 Bids
    Starting Bid
    $200
  • Gorgeous 1.51 Ct GIA Certified Natural Sapphire
    Estimate
    $3,200 - $4,500

    Gorgeous 1.51 Ct GIA Certified Natural Sapphire

    Est.
    $3,200 - $4,500
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Huge Natural GIA Certified 11.54 Ct Aquamarine
    Estimate
    $3,000 - $4,000

    Huge Natural GIA Certified 11.54 Ct Aquamarine

    Est.
    $3,000 - $4,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Amazing 2.15 Ct GIA Certified Natural Sapphire
    Estimate
    $1,900 - $2,650

    Amazing 2.15 Ct GIA Certified Natural Sapphire

    Est.
    $1,900 - $2,650
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Stunning 6.25 Ct GIA Certified Natural Emerald
    Estimate
    $7,000 - $9,000

    Stunning 6.25 Ct GIA Certified Natural Emerald

    Est.
    $7,000 - $9,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Incredible GIA Certified 1.62 Ct Natural Sapphire
    Estimate
    $3,000 - $4,000

    Incredible GIA Certified 1.62 Ct Natural Sapphire

    Est.
    $3,000 - $4,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Large 9.30 Ct GIA Certified Natural Tourmaline
    Estimate
    $7,000 - $9,000

    Large 9.30 Ct GIA Certified Natural Tourmaline

    Est.
    $7,000 - $9,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Large 15.84 Ct GIA Certified Natural Aquamarine
    Estimate
    $5,000 - $7,000

    Large 15.84 Ct GIA Certified Natural Aquamarine

    Est.
    $5,000 - $7,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Impressive 4.75 Ct GIA Certified Natural Sapphire
    Estimate
    $3,000 - $4,000

    Impressive 4.75 Ct GIA Certified Natural Sapphire

    Est.
    $3,000 - $4,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Impressive GIA Certified 2.95 Ct Natural Spinel
    Estimate
    $3,000 - $4,000

    Impressive GIA Certified 2.95 Ct Natural Spinel

    Est.
    $3,000 - $4,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Stunning 2.38 Ct GIA Certified Natural Sapphire
    Estimate
    $6,000 - $8,000

    Stunning 2.38 Ct GIA Certified Natural Sapphire

    Est.
    $6,000 - $8,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Amazing 1.01 Ct GIA Certified Natural Sapphire
    Estimate
    $2,600 - $3,650

    Amazing 1.01 Ct GIA Certified Natural Sapphire

    Est.
    $2,600 - $3,650
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Beautiful 2.77 Ct GIA Certified Natural Emerald
    Estimate
    $3,850 - $5,400

    Beautiful 2.77 Ct GIA Certified Natural Emerald

    Est.
    $3,850 - $5,400
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Majestic GIA Certified 1.23 Ct Natural Sapphire
    Estimate
    $4,750 - $6,650

    Majestic GIA Certified 1.23 Ct Natural Sapphire

    Est.
    $4,750 - $6,650
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Magnificent Huge Museum Size 1150 Ct Certified Red Ruby Solitaire
    Estimate
    $1,000 - $2,000

    Magnificent Huge Museum Size 1150 Ct Certified Red Ruby Solitaire

    Est.
    $1,000 - $2,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Huge 10.83 Ct GIA Certified Natural Sapphire
    Estimate
    $3,050 - $4,250

    Huge 10.83 Ct GIA Certified Natural Sapphire

    Est.
    $3,050 - $4,250
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Breathtaking GIA Certified 2.93 Ct Natural Garnet
    Estimate
    $3,000 - $5,000

    Breathtaking GIA Certified 2.93 Ct Natural Garnet

    Est.
    $3,000 - $5,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Pretty 0.97 Ct GIA Certified Natural Spinel
    Estimate
    $1,850 - $2,600

    Pretty 0.97 Ct GIA Certified Natural Spinel

    Est.
    $1,850 - $2,600
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Beautiful 0.59 Ct GIA Certified Natural Sapphire
    Estimate
    $1,800 - $2,400

    Beautiful 0.59 Ct GIA Certified Natural Sapphire

    Est.
    $1,800 - $2,400
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Stunning 0.24 Ct Natural Sapphire & Emerald Ring
    Estimate
    $750 - $1,000

    Stunning 0.24 Ct Natural Sapphire & Emerald Ring

    Est.
    $750 - $1,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Impressive 2.3 Ct GIA Certified Natural Spinel
    Estimate
    $3,000 - $4,000

    Impressive 2.3 Ct GIA Certified Natural Spinel

    Est.
    $3,000 - $4,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Majestic GIA Certified 0.46 Ct Natural Sapphire
    Estimate
    $2,100 - $2,800

    Majestic GIA Certified 0.46 Ct Natural Sapphire

    Est.
    $2,100 - $2,800
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Massive 20.29 Ct GIA Certified Natural Aquamarine
    Estimate
    $8,000 - $10,000

    Massive 20.29 Ct GIA Certified Natural Aquamarine

    Est.
    $8,000 - $10,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • GIA Certified 3.52 Ct Natural Sapphire
    Estimate
    $15,000 - $20,000

    GIA Certified 3.52 Ct Natural Sapphire

    Est.
    $15,000 - $20,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Large 10.17 Ct GIA Certified Natural Peridot
    Estimate
    $6,000 - $8,000

    Large 10.17 Ct GIA Certified Natural Peridot

    Est.
    $6,000 - $8,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Incredible 1.96 Ct GIA Certified Natural Sapphire
    Estimate
    $1,900 - $2,650

    Incredible 1.96 Ct GIA Certified Natural Sapphire

    Est.
    $1,900 - $2,650
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Unique 0.98 Ct GIA Certified Natural Sapphire
    Estimate
    $6,000 - $8,000

    Unique 0.98 Ct GIA Certified Natural Sapphire

    Est.
    $6,000 - $8,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Large 24.65 Ct GIA Certified Natural Morganite
    Estimate
    $10,000 - $15,000

    Large 24.65 Ct GIA Certified Natural Morganite

    Est.
    $10,000 - $15,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Dazzling 2.78 Ct IGI Certified Natural Sapphire
    Estimate
    $3,000 - $4,200

    Dazzling 2.78 Ct IGI Certified Natural Sapphire

    Est.
    $3,000 - $4,200
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Incredible 1.75 Ct GIA Certified Natural Sapphire
    Estimate
    $4,750 - $6,650

    Incredible 1.75 Ct GIA Certified Natural Sapphire

    Est.
    $4,750 - $6,650
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Gorgeous 1.68 Ct GIA Certified Natural Emerald
    Estimate
    $3,000 - $5,000

    Gorgeous 1.68 Ct GIA Certified Natural Emerald

    Est.
    $3,000 - $5,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • Breathtaking 2 Ct Certified Natural Sapphire
    Estimate
    $10,000 - $15,000

    Breathtaking 2 Ct Certified Natural Sapphire

    Est.
    $10,000 - $15,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 12.00 Carat Lab Made Pink Sapphire
    Estimate
    $400 - $500

    12.00 Carat Lab Made Pink Sapphire

    Est.
    $400 - $500
    Sarasota Estate Auction
    0 Bids
    Starting Bid
    $200
  • 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
  • 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
    $5,900
  • Turquoise, Gemstone and Quartz Necklace
    Estimate
    $300 - $500

    Turquoise, Gemstone and Quartz Necklace

    Est.
    $300 - $500
    Kodner Galleries
    0 Bids
    Starting Bid
    $150
  • Gemstone and Silver Brooch
    Estimate
    $300 - $500

    Gemstone and Silver Brooch

    Est.
    $300 - $500
    Kodner Galleries
    0 Bids
    Starting Bid
    $150
  • Sterling Donna Burdic Gemstone Brooch
    Estimate
    $200 - $400

    Sterling Donna Burdic Gemstone Brooch

    Est.
    $200 - $400
    Brunk Auctions
    0 Bids
    Starting Bid
    $100
  • Vintage 14K Gold Elephant Gemstone Jewelry Ring
    Estimate
    $100 - $10,000

    Vintage 14K Gold Elephant Gemstone Jewelry Ring

    Est.
    $100 - $10,000
    Mebane Antique Auction Gall...
    Starting Bid
    $50
  • Vintage Custom Handmade Multi Gemstone Faceted Bea
    Estimate
    $1,500 - $2,500

    Vintage Custom Handmade Multi Gemstone Faceted Bea

    Est.
    $1,500 - $2,500
    Kodner Galleries
    0 Bids
    Starting Bid
    $750
  • Vintage 14K Gold Scottie Dog Gemstone Jewelry Ring
    Estimate
    $100 - $10,000

    Vintage 14K Gold Scottie Dog Gemstone Jewelry Ring

    Est.
    $100 - $10,000
    Mebane Antique Auction Gall...
    Starting Bid
    $50
  • 18kt. and 22kt. Maija Neimanis Colored Gemstone Brooch
    Estimate
    $2,000 - $4,000

    18kt. and 22kt. Maija Neimanis Colored Gemstone Brooch

    Est.
    $2,000 - $4,000
    Brunk Auctions
    0 Bids
    Starting Bid
    $1,000
  • Pair of Asch Grossbardt 14k Gold, Diamond, and Gemstone Hoop Earrings - Gross 13.1 g.
    Estimate
    $650 - $1,000

    Pair of Asch Grossbardt 14k Gold, Diamond, and Gemstone Hoop Earrings - Gross 13.1 g.

    Est.
    $650 - $1,000
    Sarasota Estate Auction
    1 Bid
    Current Bid
    $300
  • Sterling Silver Bangle Bracelets by Suarti, Gemstone Inset W 3" 91 g 2 PCS
    Estimate
    $300 - $400

    Sterling Silver Bangle Bracelets by Suarti, Gemstone Inset W 3" 91 g 2 PCS

    Est.
    $300 - $400
    DuMouchelles
    1 Bid
    Current Bid
    $150
  • Antique 18K Gold HCB Designer Jewelry Gemstone Basket Brooch
    Estimate
    $100 - $10,000

    Antique 18K Gold HCB Designer Jewelry Gemstone Basket Brooch

    Est.
    $100 - $10,000
    Mebane Antique Auction Gall...
    Starting Bid
    $50
  • Judith Ripka Marked Sterling Silver Multi-Gemstone Cuff Bracelet - Gross 2.350 ozt.
    Estimate
    $200 - $400

    Judith Ripka Marked Sterling Silver Multi-Gemstone Cuff Bracelet - Gross 2.350 ozt.

    Est.
    $200 - $400
    Sarasota Estate Auction
    1 Bid
    Current Bid
    $100

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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