Loose Diamonds and Gemstones

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.
359 Results
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  • Loose Gemstones
    Price$3,650

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $3,650
  • Loose Gemstones
    Price$2,975

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $2,975
  • Loose Gemstones
    Price$4,300

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $4,300
  • Loose Gemstones
    Price$6,720

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $6,720
  • Loose Gemstones
    Price$3,400

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $3,400
  • Loose Gemstones
    Price$7,890

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $7,890
  • Loose Gemstones
    Price$5,730

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $5,730
  • Loose Gemstones
    Price$6,360

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $6,360
  • Loose Gemstones
    Price$6,000

    Loose Gemstones

    Universal Gems Internationa...
    Buy Now Price
    $6,000
  • 7.52 ct, D/FL, Type IIa Round cut GIA Graded Diamond. Appraised Value: $2,707,200
    Estimate
    $918,000 - $1,051,000

    7.52 ct, D/FL, Type IIa Round cut GIA Graded Diamond. A...

    Est.
    $918,000 - $1,051,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $660,000
  • 2.00 ct, F/VS2, Round cut GIA Graded Diamond. Appraised Value: $87,700
    Estimate
    $28,000 - $33,000

    2.00 ct, F/VS2, Round cut GIA Graded Diamond. Appraised...

    Est.
    $28,000 - $33,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $22,000
  • 3.55 ct, Natural Fancy Dark Orange Brown Even Color, VVS2, Cushion cut Diamond (GIA Graded), Appraised Value: $44,700
    Estimate
    $15,000 - $18,000

    3.55 ct, Natural Fancy Dark Orange Brown Even Color, VV...

    Est.
    $15,000 - $18,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $12,000
  • 3.02 ct, G/VVS2, Oval cut GIA Graded Diamond. Appraised Value: $169,800
    Estimate
    $54,000 - $63,000

    3.02 ct, G/VVS2, Oval cut GIA Graded Diamond. Appraised...

    Est.
    $54,000 - $63,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $40,000
  • 2.20 ct, D/FL, Type IIa Marquise cut GIA Graded Diamond. Appraised Value: $126,200
    Estimate
    $61,000 - $70,000

    2.20 ct, D/FL, Type IIa Marquise cut GIA Graded Diamond...

    Est.
    $61,000 - $70,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $44,000
  • 4.01 ct, F/VS2, Emerald cut GIA Graded Diamond. Appraised Value: $315,700
    Estimate
    $83,000 - $96,000

    4.01 ct, F/VS2, Emerald cut GIA Graded Diamond. Apprais...

    Est.
    $83,000 - $96,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $60,000
  • 3.01 ct, Natural Fancy Light Yellow Even Color, VVS1, Cushion cut Diamond (GIA Graded), Appraised Value: $60,800
    Estimate
    $21,000 - $25,000

    3.01 ct, Natural Fancy Light Yellow Even Color, VVS1, C...

    Est.
    $21,000 - $25,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $16,000
  • 4.79 ct, Natural Fancy Brownish Yellow Even Color, VS1, Cushion cut Diamond (GIA Graded), Appraised Value: $74,700
    Estimate
    $26,000 - $30,000

    4.79 ct, Natural Fancy Brownish Yellow Even Color, VS1,...

    Est.
    $26,000 - $30,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $19,000
  • 3.51 ct, D/FL, Cushion cut GIA Graded Diamond. Appraised Value: $403,600
    Estimate
    $76,000 - $88,000

    3.51 ct, D/FL, Cushion cut GIA Graded Diamond. Appraise...

    Est.
    $76,000 - $88,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $55,000
  • 4.04 ct, Natural Fancy Yellow Even Color, VS2, Oval cut Diamond (GIA Graded), Appraised Value: $194,700
    Estimate
    $68,000 - $78,000

    4.04 ct, Natural Fancy Yellow Even Color, VS2, Oval cut...

    Est.
    $68,000 - $78,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $50,000
  • 2.00 ct, E/VVS1, Round cut GIA Graded Diamond. Appraised Value: $165,000
    Estimate
    $45,000 - $52,000

    2.00 ct, E/VVS1, Round cut GIA Graded Diamond. Appraise...

    Est.
    $45,000 - $52,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $34,000
  • 2.19 ct, D/FL, Type IIa Round cut GIA Graded Diamond. Appraised Value: $251,800
    Estimate
    $107,000 - $123,000

    2.19 ct, D/FL, Type IIa Round cut GIA Graded Diamond. A...

    Est.
    $107,000 - $123,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $80,000
  • 8.02 carat diamond pair Round cut Diamond GIA Graded 1) 4.01 ct, Color G, VVS1 2) 4.01 ct, Color H, VVS2. Appraised Value: $771,900
    Estimate
    $305,000 - $349,000

    8.02 carat diamond pair Round cut Diamond GIA Graded 1)...

    Est.
    $305,000 - $349,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $220,000
  • 10.01 ct, H/VS1, Square Emerald cut GIA Graded Diamond. Appraised Value: $1,413,900
    Estimate
    $468,000 - $536,000

    10.01 ct, H/VS1, Square Emerald cut GIA Graded Diamond....

    Est.
    $468,000 - $536,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $340,000
  • 4.04 carat diamond pair Radiant cut Diamond GIA Graded 1) 2.01 ct, Color E, VS2 2) 2.03 ct, Color E, VS2. Appraised Value: $149,900
    Estimate
    $56,000 - $65,000

    4.04 carat diamond pair Radiant cut Diamond GIA Graded ...

    Est.
    $56,000 - $65,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $42,000
  • 2.51 ct, D/VVS1, Type IIa Oval cut GIA Graded Diamond. Appraised Value: $132,700
    Estimate
    $72,000 - $83,000

    2.51 ct, D/VVS1, Type IIa Oval cut GIA Graded Diamond. ...

    Est.
    $72,000 - $83,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $55,000
  • 2.01 ct, D/VS2, Emerald cut GIA Graded Diamond. Appraised Value: $79,100
    Estimate
    $24,000 - $29,000

    2.01 ct, D/VS2, Emerald cut GIA Graded Diamond. Apprais...

    Est.
    $24,000 - $29,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $18,000
  • 2.51 ct, D/VVS2, Cushion cut GIA Graded Diamond. Appraised Value: $118,500
    Estimate
    $32,000 - $38,000

    2.51 ct, D/VVS2, Cushion cut GIA Graded Diamond. Apprai...

    Est.
    $32,000 - $38,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $24,000
  • 10.33 ct, D/VVS1, Type IIa Emerald cut GIA Graded Diamond. Appraised Value: $3,579,300
    Estimate
    $1,022,000 - $1,170,000

    10.33 ct, D/VVS1, Type IIa Emerald cut GIA Graded Diamo...

    Est.
    $1,022,000 - $1,170,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $740,000
  • 2.00 ct, D/VVS2, Round cut GIA Graded Diamond. Appraised Value: $155,000
    Estimate
    $44,000 - $52,000

    2.00 ct, D/VVS2, Round cut GIA Graded Diamond. Appraise...

    Est.
    $44,000 - $52,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $32,000
  • 2.70 ct, D/IF, Type IIa Round cut GIA Graded Diamond. Appraised Value: $310,500
    Estimate
    $160,000 - $184,000

    2.70 ct, D/IF, Type IIa Round cut GIA Graded Diamond. A...

    Est.
    $160,000 - $184,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $120,000
  • 2.22 ct, D/FL, Type IIa Oval cut GIA Graded Diamond. Appraised Value: $127,300
    Estimate
    $63,000 - $73,000

    2.22 ct, D/FL, Type IIa Oval cut GIA Graded Diamond. Ap...

    Est.
    $63,000 - $73,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $46,000
  • 3.00 ct, Natural Fancy Light Yellow Even Color, VVS1, Radiant cut Diamond (GIA Graded), Appraised Value: $75,900
    Estimate
    $26,000 - $31,000

    3.00 ct, Natural Fancy Light Yellow Even Color, VVS1, R...

    Est.
    $26,000 - $31,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $19,000
  • 3.01 ct, F/VS2, Emerald cut GIA Graded Diamond. Appraised Value: $152,300
    Estimate
    $44,000 - $52,000

    3.01 ct, F/VS2, Emerald cut GIA Graded Diamond. Apprais...

    Est.
    $44,000 - $52,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $32,000
  • 4.03 ct, G/VVS2, Emerald cut GIA Graded Diamond. Appraised Value: $332,400
    Estimate
    $87,000 - $100,000

    4.03 ct, G/VVS2, Emerald cut GIA Graded Diamond. Apprai...

    Est.
    $87,000 - $100,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $65,000
  • 2.14 ct, Natural Fancy Vivid Yellow Even Color, IF, Cushion cut Diamond (GIA Graded), Appraised Value: $239,600
    Estimate
    $83,000 - $96,000

    2.14 ct, Natural Fancy Vivid Yellow Even Color, IF, Cus...

    Est.
    $83,000 - $96,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $60,000
  • 2.03 ct, D/FL, Type IIa Pear cut GIA Graded Diamond. Appraised Value: $116,400
    Estimate
    $55,000 - $64,000

    2.03 ct, D/FL, Type IIa Pear cut GIA Graded Diamond. Ap...

    Est.
    $55,000 - $64,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $40,000
  • 8.18 ct, G/IF, Emerald cut GIA Graded Diamond. Appraised Value: $1,094,000
    Estimate
    $357,000 - $409,000

    8.18 ct, G/IF, Emerald cut GIA Graded Diamond. Appraise...

    Est.
    $357,000 - $409,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $260,000
  • 3.01 ct, H/VS2, Radiant cut GIA Graded Diamond. Appraised Value: $121,900
    Estimate
    $42,000 - $49,000

    3.01 ct, H/VS2, Radiant cut GIA Graded Diamond. Apprais...

    Est.
    $42,000 - $49,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $32,000
  • 2.01 ct, Natural Fancy Light Yellow Even Color, VS2, Cushion cut Diamond (GIA Graded), Appraised Value: $28,100
    Estimate
    $9,000 - $12,000

    2.01 ct, Natural Fancy Light Yellow Even Color, VS2, Cu...

    Est.
    $9,000 - $12,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $7,500
  • 4.01 ct, D/VVS1, Cushion cut GIA Graded Diamond. Appraised Value: $476,100
    Estimate
    $87,000 - $100,000

    4.01 ct, D/VVS1, Cushion cut GIA Graded Diamond. Apprai...

    Est.
    $87,000 - $100,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $65,000
  • 3.30 ct, D/VVS1, Type IIa Marquise cut GIA Graded Diamond. Appraised Value: $301,100
    Estimate
    $120,000 - $138,000

    3.30 ct, D/VVS1, Type IIa Marquise cut GIA Graded Diamo...

    Est.
    $120,000 - $138,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $90,000
  • 2.03 ct, Natural Fancy Brown Yellow Even Color, VVS1, Type IIa Radiant cut Diamond (GIA Graded), Appraised Value: $32,800
    Estimate
    $11,000 - $14,000

    2.03 ct, Natural Fancy Brown Yellow Even Color, VVS1, T...

    Est.
    $11,000 - $14,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $8,500
  • 10.88 ct, D/FL, Type IIa Heart cut GIA Graded Diamond. Appraised Value: $4,896,000
    Estimate
    $1,432,000 - $1,638,000

    10.88 ct, D/FL, Type IIa Heart cut GIA Graded Diamond. ...

    Est.
    $1,432,000 - $1,638,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $1,030,000
  • 2.00 ct, D/VVS1, Round cut GIA Graded Diamond. Appraised Value: $185,000
    Estimate
    $47,000 - $55,000

    2.00 ct, D/VVS1, Round cut GIA Graded Diamond. Appraise...

    Est.
    $47,000 - $55,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $34,000
  • 2.15 ct, Natural Fancy Light Yellow Even Color, VVS1, Pear cut Diamond (GIA Graded), Appraised Value: $51,500
    Estimate
    $18,000 - $21,000

    2.15 ct, Natural Fancy Light Yellow Even Color, VVS1, P...

    Est.
    $18,000 - $21,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $13,000
  • 3.02 ct, D/FL, Type IIa Oval cut GIA Graded Diamond. Appraised Value: $347,300
    Estimate
    $133,000 - $153,000

    3.02 ct, D/FL, Type IIa Oval cut GIA Graded Diamond. Ap...

    Est.
    $133,000 - $153,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $100,000
  • 2.01 ct, E/VVS1, Princess cut GIA Graded Diamond. Appraised Value: $94,900
    Estimate
    $33,000 - $39,000

    2.01 ct, E/VVS1, Princess cut GIA Graded Diamond. Appra...

    Est.
    $33,000 - $39,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $26,000
  • 2.01 ct, H/VS2, Emerald cut GIA Graded Diamond. Appraised Value: $54,200
    Estimate
    $18,000 - $22,000

    2.01 ct, H/VS2, Emerald cut GIA Graded Diamond. Apprais...

    Est.
    $18,000 - $22,000
    Bid Global International Au...
    0 Bids
    Starting Bid
    $14,000