1033 Results
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  • 18kt. Vintage Tom Herman Slate and Chrysoprase Brooch
    Estimate
    $1,000 - $1,500

    18kt. Vintage Tom Herman Slate and Chrysoprase Brooch

    Est.
    $1,000 - $1,500
    Brunk Auctions
    0 Bids
    Starting Bid
    $500
  • Sterling and 22kt. Sydney Lynch Organic Shaped Aquamarine Brooch
    Estimate
    $200 - $400

    Sterling and 22kt. Sydney Lynch Organic Shaped Aquamarine Brooch

    Est.
    $200 - $400
    Brunk Auctions
    1 Bid
    Current Bid
    $100
  • 18kt., 22kt. and Sterling Carolyn Morris Bach Brooch
    Estimate
    $200 - $400

    18kt., 22kt. and Sterling Carolyn Morris Bach Brooch

    Est.
    $200 - $400
    Brunk Auctions
    1 Bid
    Current Bid
    $100
  • 18kt. and 14kt. Lapis Lazuli and Emerald Brooch
    Estimate
    $500 - $700

    18kt. and 14kt. Lapis Lazuli and Emerald Brooch

    Est.
    $500 - $700
    Brunk Auctions
    1 Bid
    Current Bid
    $250
  • 18KT White Gold Plated 69ctw Deep Purple Fire Moissanite Necklace
    Estimate
    $4,000 - $5,000

    18KT White Gold Plated 69ctw Deep Purple Fire Moissanite Necklace

    Est.
    $4,000 - $5,000
    1 Great Deal Auctions
    0 Bids
    Starting Bid
    $1
  • 18kt. Wise 2X Blue Spiral Brooch, with Blue Sapphire and Chalcedony
    Estimate
    $1,200 - $1,800

    18kt. Wise 2X Blue Spiral Brooch, with Blue Sapphire and Chalcedony

    Est.
    $1,200 - $1,800
    Brunk Auctions
    0 Bids
    Starting Bid
    $600
  •  22kt. and Sterling Sydney Lynch Watermelon Tourmaline Brooch
    Estimate
    $800 - $1,200

    22kt. and Sterling Sydney Lynch Watermelon Tourmaline Brooch

    Est.
    $800 - $1,200
    Brunk Auctions
    1 Bid
    Current Bid
    $400
  • 14kt. Sculpted Faces with Rhodonite and Freshwater Pearl Drop Earrings
    Estimate
    $800 - $1,200

    14kt. Sculpted Faces with Rhodonite and Freshwater Pearl Drop Earrings

    Est.
    $800 - $1,200
    Brunk Auctions
    0 Bids
    Starting Bid
    $400
  • 14kt. Multi Colored Sapphires and Pearl Foliage Brooch
    Estimate
    $1,400 - $2,000

    14kt. Multi Colored Sapphires and Pearl Foliage Brooch

    Est.
    $1,400 - $2,000
    Brunk Auctions
    0 Bids
    Starting Bid
    $700
  • 18kt. Chrysocolla with Azurite and Amethyst Earrings By Seven Fingers
    Estimate
    $1,400 - $2,000

    18kt. Chrysocolla with Azurite and Amethyst Earrings By Seven Fingers

    Est.
    $1,400 - $2,000
    Brunk Auctions
    0 Bids
    Starting Bid
    $700
  • 14kt. Sculpted Ribbon Brooch with Tourmalines
    Estimate
    $200 - $400

    14kt. Sculpted Ribbon Brooch with Tourmalines

    Est.
    $200 - $400
    Brunk Auctions
    0 Bids
    Starting Bid
    $100
  • Sterling Silver Carved Jade and jade and Rock Crystal Statement Brooch by Rebecca Collins
    Estimate
    $200 - $400

    Sterling Silver Carved Jade and jade and Rock Crystal Statement Brooch by Rebecca Collins

    Est.
    $200 - $400
    Brunk Auctions
    0 Bids
    Starting Bid
    $100
  • 18kt. Trillion Faceted Toumaline Geometric Brooch
    Estimate
    $400 - $600

    18kt. Trillion Faceted Toumaline Geometric Brooch

    Est.
    $400 - $600
    Brunk Auctions
    1 Bid
    Current Bid
    $200
  • Victorian 18K Gold Diamond Ruby Swallow Bird Jewelry Brooch
    Estimate
    $2,000 - $4,000

    Victorian 18K Gold Diamond Ruby Swallow Bird Jewelry Brooch

    Est.
    $2,000 - $4,000
    Mebane Antique Auction Gall...
    Starting Bid
    $1,000
  • 18kt. Boulder Opal, Chrome Tourmaline and Blue Sapphire Brooch, By Seven Fingers
    Estimate
    $1,400 - $2,000

    18kt. Boulder Opal, Chrome Tourmaline and Blue Sapphire Brooch, By Seven Fingers

    Est.
    $1,400 - $2,000
    Brunk Auctions
    0 Bids
    Starting Bid
    $700
  • Sterling Silver Vadim Bora Brooch with Charoite
    Estimate
    $400 - $600

    Sterling Silver Vadim Bora Brooch with Charoite

    Est.
    $400 - $600
    Brunk Auctions
    0 Bids
    Starting Bid
    $200
  • 14kt. Textured Tanzanite and Tourmaline Disc Earrings
    Estimate
    $1,000 - $1,500

    14kt. Textured Tanzanite and Tourmaline Disc Earrings

    Est.
    $1,000 - $1,500
    Brunk Auctions
    0 Bids
    Starting Bid
    $500
  • 18kt. Barbara Heinrich Textured Disc Earrings with Tanzanite and Diamonds
    Estimate
    $800 - $1,200

    18kt. Barbara Heinrich Textured Disc Earrings with Tanzanite and Diamonds

    Est.
    $800 - $1,200
    Brunk Auctions
    1 Bid
    Current Bid
    $400
  • SARAH PERKINS, Mushroom Cup Brooch
    Estimate
    $600 - $1,200

    SARAH PERKINS, Mushroom Cup Brooch

    Est.
    $600 - $1,200
    Massachusetts College of Ar...
    0 Bids
    Starting Bid
    $600
    Buy Now Price
    $1,200
  • Judith Ripka Marked Sterling Silver CZ Heart Hinged Cuff Bracelet - Gross 1.410 ozt.
    Estimate
    $125 - $250

    Judith Ripka Marked Sterling Silver CZ Heart Hinged Cuff Bracelet - Gross 1.410 ozt.

    Est.
    $125 - $250
    Sarasota Estate Auction
    0 Bids
    Starting Bid
    $60
  • 18kt. Swallowtail Tapestry Brooch by Jeff Wise
    Estimate
    $1,000 - $1,500

    18kt. Swallowtail Tapestry Brooch by Jeff Wise

    Est.
    $1,000 - $1,500
    Brunk Auctions
    0 Bids
    Starting Bid
    $500
  • 18kt. Wise 2X Rock Garden #1 Brooch
    Estimate
    $1,400 - $2,000

    18kt. Wise 2X Rock Garden #1 Brooch

    Est.
    $1,400 - $2,000
    Brunk Auctions
    0 Bids
    Starting Bid
    $700
  • Vintage 18K Gold Hermès Paris Jewelry Fox Brooch
    Estimate
    $100 - $10,000

    Vintage 18K Gold Hermès Paris Jewelry Fox Brooch

    Est.
    $100 - $10,000
    Mebane Antique Auction Gall...
    Starting Bid
    $50
  • Very Important Victorian Gold Watch Fob Collection
    Estimate
    $100 - $10,000

    Very Important Victorian Gold Watch Fob Collection

    Est.
    $100 - $10,000
    Mebane Antique Auction Gall...
    Starting Bid
    $50
  • David Friedman & Sons 14K Gold Jewelry Diamond Ruby Fox Bracelet
    Estimate
    $100 - $10,000

    David Friedman & Sons 14K Gold Jewelry Diamond Ruby Fox Bracelet

    Est.
    $100 - $10,000
    Mebane Antique Auction Gall...
    Starting Bid
    $50

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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