2687 Results
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  • 18k Gold Vintage Cross with Multicolor Semiprecious Gemstones
    Estimate
    $8,000 - $9,500

    18k Gold Vintage Cross with Multicolor Semiprecious Gem...

    Est.
    $8,000 - $9,500
    Prime Auction Gallery
    0 Bids
    Starting Bid
    $6,500
  • Natural 1.02 ct, Color Brownish Pink/ GIA Graded Diamond
    Estimate
    $1,400 - $2,800

    Natural 1.02 ct, Color Brownish Pink/ GIA Graded Diamon...

    Est.
    $1,400 - $2,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,400
  • Natural 1 ct, Color G/SI2 GIA Graded Diamond
    Estimate
    $3,200 - $6,400

    Natural 1 ct, Color G/SI2 GIA Graded Diamond

    Est.
    $3,200 - $6,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,200
  • Natural 1.53 ct, Color Fancy Brownish Yellow/ GIA Graded Diamond
    Estimate
    $2,200 - $4,400

    Natural 1.53 ct, Color Fancy Brownish Yellow/ GIA Grade...

    Est.
    $2,200 - $4,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,200
  • Natural 1 ct, Color F/I1 GIA Graded Diamond
    Estimate
    $1,800 - $3,600

    Natural 1 ct, Color F/I1 GIA Graded Diamond

    Est.
    $1,800 - $3,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,800
  • Natural 1.58 ct, Color Fancy Yellow/ GIA Graded Diamond
    Estimate
    $3,900 - $7,800

    Natural 1.58 ct, Color Fancy Yellow/ GIA Graded Diamond...

    Est.
    $3,900 - $7,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,900
  • Natural 1 ct, Color J/I1 GIA Graded Diamond
    Estimate
    $1,100 - $2,200

    Natural 1 ct, Color J/I1 GIA Graded Diamond

    Est.
    $1,100 - $2,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,100
  • Natural 1 ct, Color G/SI3 GIA Graded Diamond
    Estimate
    $3,200 - $6,400

    Natural 1 ct, Color G/SI3 GIA Graded Diamond

    Est.
    $3,200 - $6,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,200
  • Natural 1 ct, Color F/VS1 GIA Graded Diamond
    Estimate
    $2,600 - $5,200

    Natural 1 ct, Color F/VS1 GIA Graded Diamond

    Est.
    $2,600 - $5,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,600
  • Natural 3.71 ct, Color K/VS1 IGI Graded Diamond
    Estimate
    $24,000 - $48,000

    Natural 3.71 ct, Color K/VS1 IGI Graded Diamond

    Est.
    $24,000 - $48,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $24,000
  • Natural 1 ct, Color F/I1 GIA Graded Diamond
    Estimate
    $1,500 - $3,000

    Natural 1 ct, Color F/I1 GIA Graded Diamond

    Est.
    $1,500 - $3,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,500
  • Natural 1.01 ct, Color K/SI3 GIA Graded Diamond
    Estimate
    $1,800 - $3,600

    Natural 1.01 ct, Color K/SI3 GIA Graded Diamond

    Est.
    $1,800 - $3,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,800
  • Natural 0.8 ct, Color E/VS2 GIA Graded Diamond
    Estimate
    $2,400 - $4,800

    Natural 0.8 ct, Color E/VS2 GIA Graded Diamond

    Est.
    $2,400 - $4,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,400
  • Natural 1.5 ct, Color I/SI2 GIA Graded Diamond
    Estimate
    $6,000 - $12,000

    Natural 1.5 ct, Color I/SI2 GIA Graded Diamond

    Est.
    $6,000 - $12,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $6,000
  • Lab Grown 1.09 ct, Color E/VS1  Graded Diamond
    Estimate
    $360 - $720

    Lab Grown 1.09 ct, Color E/VS1 Graded Diamond

    Est.
    $360 - $720
    Robinhood Auctions
    0 Bids
    Starting Bid
    $360
  • Natural 1.03 ct, Color D/SI2 GIA Graded Diamond
    Estimate
    $2,800 - $5,600

    Natural 1.03 ct, Color D/SI2 GIA Graded Diamond

    Est.
    $2,800 - $5,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,800
  • Natural 1.31 ct, Color M/SI2 GIA Graded Diamond
    Estimate
    $2,000 - $4,000

    Natural 1.31 ct, Color M/SI2 GIA Graded Diamond

    Est.
    $2,000 - $4,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,000
  • Natural 1.5 ct, Color H/SI2 HRD Graded Diamond
    Estimate
    $4,500 - $9,000

    Natural 1.5 ct, Color H/SI2 HRD Graded Diamond

    Est.
    $4,500 - $9,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $4,500
  • Natural 1.5 ct, Color G/SI1 GIA Graded Diamond
    Estimate
    $8,000 - $16,000

    Natural 1.5 ct, Color G/SI1 GIA Graded Diamond

    Est.
    $8,000 - $16,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $8,000
  • Natural 1.04 ct, Color D/SI2 GIA Graded Diamond
    Estimate
    $4,000 - $8,000

    Natural 1.04 ct, Color D/SI2 GIA Graded Diamond

    Est.
    $4,000 - $8,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $4,000
  • Natural 1.5 ct, Color K/VS1 GIA Graded Diamond
    Estimate
    $4,200 - $8,400

    Natural 1.5 ct, Color K/VS1 GIA Graded Diamond

    Est.
    $4,200 - $8,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $4,200
  • Natural 0.86 ct, Color H/I1 GIA Graded Diamond
    Estimate
    $1,050 - $2,100

    Natural 0.86 ct, Color H/I1 GIA Graded Diamond

    Est.
    $1,050 - $2,100
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,050
  • Natural 0.9 ct, Color F/SI2 GIA Graded Diamond
    Estimate
    $1,800 - $3,600

    Natural 0.9 ct, Color F/SI2 GIA Graded Diamond

    Est.
    $1,800 - $3,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,800
  • Natural 1.01 ct, Color H/I1 GIA Graded Diamond
    Estimate
    $1,700 - $3,400

    Natural 1.01 ct, Color H/I1 GIA Graded Diamond

    Est.
    $1,700 - $3,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,700
  • Lab Grown 1.41 ct, Color E/VS1 IGI Graded Diamond
    Estimate
    $340 - $680

    Lab Grown 1.41 ct, Color E/VS1 IGI Graded Diamond

    Est.
    $340 - $680
    Robinhood Auctions
    0 Bids
    Starting Bid
    $340
  • Lab Grown 2.03 ct, Color E/VS2 IGI Graded Diamond
    Estimate
    $550 - $1,100

    Lab Grown 2.03 ct, Color E/VS2 IGI Graded Diamond

    Est.
    $550 - $1,100
    Robinhood Auctions
    0 Bids
    Starting Bid
    $550
  • Natural 0.7 ct, Color D/SI1 GIA Graded Diamond
    Estimate
    $1,600 - $3,200

    Natural 0.7 ct, Color D/SI1 GIA Graded Diamond

    Est.
    $1,600 - $3,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,600
  • Lab Grown 2.51 ct, Color G/VVS2 IGI Graded Diamond
    Estimate
    $750 - $1,500

    Lab Grown 2.51 ct, Color G/VVS2 IGI Graded Diamond

    Est.
    $750 - $1,500
    Robinhood Auctions
    0 Bids
    Starting Bid
    $750
  • Lab Grown 2.55 ct, Color E/VS2 IGI Graded Diamond
    Estimate
    $750 - $1,500

    Lab Grown 2.55 ct, Color E/VS2 IGI Graded Diamond

    Est.
    $750 - $1,500
    Robinhood Auctions
    0 Bids
    Starting Bid
    $750
  • Lab Grown 4.57 ct, Color FVB/VVS2 IGI Graded Diamond
    Estimate
    $2,200 - $4,400

    Lab Grown 4.57 ct, Color FVB/VVS2 IGI Graded Diamond

    Est.
    $2,200 - $4,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,200
  • Lab Grown 7.08 ct, Color G/VS1 IGI Graded Diamond
    Estimate
    $2,600 - $5,200

    Lab Grown 7.08 ct, Color G/VS1 IGI Graded Diamond

    Est.
    $2,600 - $5,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,600
  • Natural 1.01 ct, Color G/VS1 GIA Graded Diamond
    Estimate
    $5,500 - $11,000

    Natural 1.01 ct, Color G/VS1 GIA Graded Diamond

    Est.
    $5,500 - $11,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $5,500
  • Natural 0.5 ct, Color G/SI2 GIA Graded Diamond
    Estimate
    $650 - $1,300

    Natural 0.5 ct, Color G/SI2 GIA Graded Diamond

    Est.
    $650 - $1,300
    Robinhood Auctions
    0 Bids
    Starting Bid
    $650
  • Natural 0.75 ct, Color F/VVS1 GIA Graded Diamond
    Estimate
    $2,000 - $4,000

    Natural 0.75 ct, Color F/VVS1 GIA Graded Diamond

    Est.
    $2,000 - $4,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,000
  • Natural 0.72 ct, Color G/VVS2 GIA Graded Diamond
    Estimate
    $2,200 - $4,400

    Natural 0.72 ct, Color G/VVS2 GIA Graded Diamond

    Est.
    $2,200 - $4,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,200
  • Lab Grown 1.7 ct, Color G/VS1 IGI Graded Diamond
    Estimate
    $480 - $960

    Lab Grown 1.7 ct, Color G/VS1 IGI Graded Diamond

    Est.
    $480 - $960
    Robinhood Auctions
    0 Bids
    Starting Bid
    $480
  • Lab Grown 5.02 ct, Color F/VS2 IGI Graded Diamond
    Estimate
    $1,600 - $3,200

    Lab Grown 5.02 ct, Color F/VS2 IGI Graded Diamond

    Est.
    $1,600 - $3,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,600
  • Lab Grown 3.53 ct, Color E/VS1 IGI Graded Diamond
    Estimate
    $1,100 - $2,200

    Lab Grown 3.53 ct, Color E/VS1 IGI Graded Diamond

    Est.
    $1,100 - $2,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,100
  • Natural 0.8 ct, Color E/SI2 GIA Graded Diamond
    Estimate
    $1,400 - $2,800

    Natural 0.8 ct, Color E/SI2 GIA Graded Diamond

    Est.
    $1,400 - $2,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,400
  • Natural 1.16 ct, Color F/SI2 IGI Graded Diamond
    Estimate
    $2,600 - $5,200

    Natural 1.16 ct, Color F/SI2 IGI Graded Diamond

    Est.
    $2,600 - $5,200
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,600
  • Natural 1.31 ct, Color M/SI2 GIA Graded Diamond
    Estimate
    $3,300 - $6,600

    Natural 1.31 ct, Color M/SI2 GIA Graded Diamond

    Est.
    $3,300 - $6,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $3,300
  • Natural 0.73 ct, Color G/VVS1 GIA Graded Diamond
    Estimate
    $1,900 - $3,800

    Natural 0.73 ct, Color G/VVS1 GIA Graded Diamond

    Est.
    $1,900 - $3,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,900
  • Natural 0.81 ct, Color I/VS2 GIA Graded Diamond
    Estimate
    $1,700 - $3,400

    Natural 0.81 ct, Color I/VS2 GIA Graded Diamond

    Est.
    $1,700 - $3,400
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,700
  • Natural 1.01 ct, Color D/SI2 GIA Graded Diamond
    Estimate
    $2,800 - $5,600

    Natural 1.01 ct, Color D/SI2 GIA Graded Diamond

    Est.
    $2,800 - $5,600
    Robinhood Auctions
    0 Bids
    Starting Bid
    $2,800
  • Natural 1.51 ct, Color F/SI1 GIA Graded Diamond
    Estimate
    $9,000 - $18,000

    Natural 1.51 ct, Color F/SI1 GIA Graded Diamond

    Est.
    $9,000 - $18,000
    Robinhood Auctions
    0 Bids
    Starting Bid
    $9,000
  • Natural 0.7 ct, Color F/VVS1 GIA Graded Diamond
    Estimate
    $1,900 - $3,800

    Natural 0.7 ct, Color F/VVS1 GIA Graded Diamond

    Est.
    $1,900 - $3,800
    Robinhood Auctions
    0 Bids
    Starting Bid
    $1,900
  • Lab Grown 1.4 ct, Color E/VS1 IGI Graded Diamond
    Estimate
    $340 - $680

    Lab Grown 1.4 ct, Color E/VS1 IGI Graded Diamond

    Est.
    $340 - $680
    Robinhood Auctions
    0 Bids
    Starting Bid
    $340
  • Lab Grown 1.51 ct, Color D/VS1 DSL Graded Diamond
    Estimate
    $750 - $1,500

    Lab Grown 1.51 ct, Color D/VS1 DSL Graded Diamond

    Est.
    $750 - $1,500
    Robinhood Auctions
    0 Bids
    Starting Bid
    $750

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.