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GIA Certified Diamonds

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Established in 1931, GIA is the world’s foremost grading and certification authority on diamonds, colored stones, and pearls. A public benefit, nonprofit institute, GIA is the leading source of knowledge, standards, and education in gems and jewelry. In 1953, the GIA developed its International Diamond Grading System and the Four Cs (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds. The key to GIA– they don't buy, sell, trade or cut diamonds – they don't value (how much is my diamond worth?) so there is no conflict of interest, ulterior motives for higher or lower grading. Multiple diamond gemologists score each diamond and must agree. This avoids "pay offs", dishonest deals for exaggerated color or clarity grading. Their integrity over the years has earned them the ‘Gold Standard’ reputation worldwide.

The Gemological Institute of America – The Gold Standard Worldwide for Diamonds

The GIA Laboratory provides a variety of gem grading and identification reports. Diamond grading reports for unmounted natural diamonds determine their key characteristics: color, clarity, cut and carat weight. GIA issues a complete Diamond Grading Report. The reports contain a number of measurements, unique to the individual diamond being evaluated, including length (millimeters), width (millimeters), and depth (millimeters), as well as a diagram of where and what types of inclusions (flaws) are located in or on the diamond. Diamond grading reports are now demanded by most consumers purchasing diamonds over a certain size, typically for over 0.5 carat (100 milligrams), and almost always for over 1.0 carat (200 milligrams), and are considered an important tool in guaranteeing that a diamond is accurately represented to a potential buyer. Gray & Sons goes an extra step and pays GIA to engrave the certificate number on the diamond after grading – to offer our customers peace of mind to know – the “Pedigree” delivered with their diamond is really for THAT diamond.

At Gray & Sons, we offer a wide selection of GIA-certified diamond rings, bracelets, necklaces, pendants, and loose diamonds. Large diamond jewelry from our inventory comes with a GIA certificate. We have two in-house GIA-Certified Diamond Gemologists and Colored Stones Specialists.

Learn More: At Gray & Sons Jewelers, Our Commitment To Diamonds Runs Deep

Sell or Consign Your Diamonds
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    GIA certified 1.01cts princess cut diamond ring in 14k white gold

    GIA certified 1.01cts princess cut diamond ring F color SI1 clarity with appr. .70cts in side princess cut diamonds in 14k white gold. Size 6.5.

    This GIA certified ring is currently size 6.5 and some items can be sized up or down, please ask! It weighs 0 pennyweights and is 14k White Gold.GIA Certificate
    G&S Price: $5,500.00
    Item #:S516285
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    Gia certified round brilliant cut diamonf 0.97 carat ( F color, Si1 clarity)

    Gia certified round brilliant cut diamonf 0.97 carat ( F color, Si1 clarity) set in 18k white gold. Size 7.

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 0 gramms and is 18k White Gold.GIA Certificate
    G&S Price: $4,380.00
    Item #:S516276
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    Triangle shaped diamond 0.54 ct (K color, VS1 clarity)

    GIA certified triangle shaped diamond 0.54 ct ( K color, VS1 clarity)GIA Certificate
    G&S Price: $1,000.00
    Item #:S516145
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    GIA Certified round brilliant cut diamond 1.51 carat (E color, VS2 clarity)

    GIA Certified round brilliant cut diamond 1.51 carat (E color, VS2 clarity) set in platinum setting. Size 7.

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 0 gramms and is Platinum.GIA Certificate
    G&S Price: $16,800.00
    Item #:S516149
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    Gia certified round brilliant diamond 2.03 carat (M colot, Vs1 clarity)

    GIA certified round brilliant diamond 2.03 carat (M colot, VS1 clarity) in 18k yellow gold setting with 18k white gold 4-prong setting with approx 1.20 cts I color SI clarity princess cut diamonds. Size 6.5

    This GIA certified ring is currently size 6.5 and some items can be sized up or down, please ask! It weighs 5.6 pennyweights and is 18k.GIA Certificate
    G&S Price: $11,500.00
    Item #:S516186
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    GIA certified round brilliant diamond 0.90 carat (E color, VVS2 clarity)

    GIA certified round brilliant cut diamond 0.90 carat (E color, VVS2 clarity) set in platinum setting. Size 6.

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 2.9 pennyweights and is Platinum.GIA Certificate
    G&S Price: $7,450.00
    Item #:S516045
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    Kutchinsky diamond bow pin in 18k yellow gold

    Kutchinsky London diamond bow pin in 18k yellow gold with GIA certified pear brilliant cut 7.57 carat diamond (Natural, Fancy Dark Brown-Greenish Yellow Even color, VS2 clarity, Excellent polish) and GIA certified round brilliant cut 1.23 carat diamond (E color, SI1 clarity) and over 5 carats in pave set white diamonds in bow & drop. Hanging length 47mm.
    G&S Price: $69,500.00
    Item #:S516280
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    GIA certificate round brilliant diamond studs 2.76 carat (N color, SI1 clarity) and 2.57 carat (M color, SI2 clarity)

    GIA certificate round brilliant cut diamond studs 2.76 carat (N color, SI1 clarity) and 2.57 carat (M color, SI2 clarity, Excellent polish) set in 4 prong 18k white gold setting. Total 5.33 carats.GIA CertificateGIA Certificate
    G&S Price: $22,500.00
    Item #:S515991
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    Diamond earrings with GIA certified Pear Shapes

    Incredibly elegant diamond earrings in platinum gold with two GIA certified pear shaped diamonds 3.07 cts (J color, SI2 clarity) and 3.42 cts (K color, I1 clarity) with approx. 6 cts in marquise diamonds and 1 carat in round diamonds (H-I Color, SI Clarity). Hanging section removable for versatile wear. Hanging length 1.75 inches.GIA CertificateGIA Certificate
    G&S Price: $55,000.00
    Item #:S516206
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    GIA certified round brilliant diamond ring 1.74 carat (L color, VS2 clarity)

    GIA cerified round brilliant diamond 1.74 carat (L color, VS2 clarity) ring set in platinum setting with two baguette side diamonds. Size 5.5

    This GIA certified ring is currently size 5.5 and some items can be sized up or down, please ask! It weighs 0 gramms and is Platinum.GIA Certificate
    G&S Price: $8,400.00
    Item #:S515975
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    GIA certified round brilliant diamond 1.22 carat (H color, VS1 clarity)

    GIA certified round brilliant diamond 1.22 carat (H color, VS1 clarity) ring set in platinum with 0.30 carats in diamond accents. Width: 6.6mm. Size 7.

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 0 gramms and is Platinum.GIA Certificate
    G&S Price: $7,450.00
    Item #:S515996
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    GIA Certified pear brilliant cut diamond ring 1.53 cts set in 14k yellow gold

    GIA Certified pear brilliant cut diamond ring with solitaire setting 1.53 carat (D color, VS2 clarity) set in 14k yellow gold. With complementary wedding band with 0.20 carats set in 14k yellow gold. Size 6.

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 4.4 pennyweights and is 14k.GIA Certificate
    G&S Price: $9,900.00
    Item #:S516068
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    GIA certified round circular brilliant diamond 1.07 carat (I color, I2 clarity)

    GIA certified round circular brilliant diamond 1.07 carat (I color, I2 clarity) set in semi-set platinum setting with 0.33 cts in diamonds. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 0 gramms and is Platinum.GIA Certificate
    G&S Price: $6,600.00
    Item #:S516061
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    GIA certified Square Emerald cut diamond 4.12 carat (J color VS2 clarity)

    GIA certified square emerald cut diamond 4.12 carat (J color, VS2 clarity) set in diamond halo setting with diamond accented split shank 18k white gold setting, 0.73 cts. Can be sized to fit. Size 6.5

    This GIA certified ring is currently size 6.5 and some items can be sized up or down, please ask! It weighs 0 gramms and is 18k White Gold.GIA Certificate
    G&S Price: $37,800.00
    Item #:S516032
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    GIA certified emerald cut 1.54 carat (J color, VVS2 clarity)

    GIA Certified emerald cut 1.54 carat diamond (J color VVS2 clarity) set in platinum setting with diamond accents on each size. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 4.7 pennyweights and is Platinum.GIA Certificate
    G&S Price: $5,750.00
    Item #:S515914
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    Diamond engagement ring with 1.01cts in 14k white gold

    GIA certified diamond engagement ring with 1.01cts rectangular diamond F color SI2 clarity and appr.0.70cts in side princess cut diamond accents in 14k white gold.

    This GIA certified ring is currently size 3.75 and some items can be sized up or down, please ask! It weighs 2.7 pennyweights and is 14k White Gold.GIA Certificate
    G&S Price: $3,700.00
    Item #:S515952
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    GIA certified Shield step cut diamond 1.48 carat D color VS2 clarity

    GIA certified shield step cut diamond 1.48 carat (D color,VS2 clarity) ring with two baguette side diamonds set in platinum. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 2.2 pennyweights and is Platinum.GIA Certificate
    G&S Price: $7,770.00
    Item #:S515913
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    Gia certified round brilliant cut 3.10 carat (I color, I1 clarity) in platinum setting

    Gia certified round brilliant cut 3.10 carat (I color, I1 clarity, Excellent cut) set in platinum 3 row micro pave setting containing 174 round full cut diamonds (G-H color, VS clarity). Size 6.5

    This GIA certified ring is currently size 6.5 and some items can be sized up or down, please ask! It weighs 3.6 pennyweights and is Platinum.GIA Certificate
    G&S Price: $16,500.00
    Item #:S515982
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    Gia certified diamond studs 1.02 ct (K color, Vs1 clarity) and 1.03 ct (M color, Vvs2 carity)

    Gia certified round brilliant diamond studs 1.02 carat (K color, Vs1 clarity) and 1.03 carat (M color, Vvs2 clarity) set in 14k white gold martini setting.

    This GIA certified ring is 14k White Gold.GIA CertificateGIA Certificate
    G&S Price: $6,720.00
    Item #:S515847
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    GIA CertifiedDiamond studs 0.53 carat K color, Si1 clarity and 0.50 N color, Si1 clarity

    GIA Certified round brilliant diamond studs 0.53 carat (K color, Si1 clarity) and 0.50 (N color, Si1 clarity) set in 14k white gold triniti setting. Total 1.03 carat.GIA CertificateGIA Certificate
    G&S Price: $2,500.00
    Item #:S515689
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    GIA certified round brilliant cut diamond 2.01 carat H color VS2 clarity

    GIA certified round brilliant cut diamond 2.01 carat (H color, VS2 clarity, Excellent polish) set in 18k white gold with approx. 1 carat in accent diamonds on halo & split shank. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 0 gramms and is 18k White Gold.GIA Certificate
    G&S Price: $18,500.00
    Item #:S515743
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    GIA certified round brilliant diamond 1.98 carat W to X range color, VS1 clarity

    GIA certified round brilliant diamond 1.98 carat W to X range color, VS1 clarity solitare ring set in 14k. Size 12

    This GIA certified ring is currently size 12 and some items can be sized up or down, please ask! It weighs 7.8 pennyweights and is 14k.GIA Certificate
    G&S Price: $5,500.00
    Item #:S515846
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    GIA certified square modified brilliant cut 3.24 carat G color VS2 clarity diamond ring

    GIA certified square modified brilliant cut diamond 3.24 carat (G color, VS2 clarity, Excellent polish) set in a robust platinum setting. Size 4.5.

    This GIA certified ring is currently size 4.5 and some items can be sized up or down, please ask! It weighs 6 pennyweights and is Platinum.GIA Certificate
    G&S Price: $39,700.00
    Item #:S515829
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    GIA certified round brilliant cut 1.03 J color VS2 clarity diamond bricks and blocks ring

    GIA certified round brilliant cut 1.03 J color VS2 clarity diamond bricks and blocks ring in 14k gold with diamond accents (each 0.10 carat). Size 10.

    This GIA certified ring is currently size 10 and some items can be sized up or down, please ask! It weighs 23 pennyweights and is 14k.GIA Certificate
    G&S Price: $6,950.00
    Item #:S515663
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    GIA Certified diamond studs 0.91carat (J Color, SI1clarity) 0.82 carat (J color VVS1 claruty)

    GIA Certified Diamond Studs - 0.91carat (J Color, SI1clarity) 0.82 carat (J color VVS1 clarity) Total of 1.73cts cts set in 4-prong 18k white gold basket setting.GIA CertificateGIA Certificate
    G&S Price: $5,500.00
    Item #:S514863
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    GIA certified round brilliant cut 3.01 K color, VVS1 clarity cts diamond

    GIA certified round brilliant cut diamond 3.01 ct round cut diamond (K color VVS1 clarity ) set in platinum martini setting withGIA Certificate
    G&S Price: $29,950.00
    Item #:S515702
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    GIA certified round briiliant diamond 1.13 carats (J color, VS2 clarity)

    GIA certified round briiliant cut diamond 1.13 carats (J color, VS2 clarity) ring in platinum with (approx .50 cts) in side diamond accents. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 6.9 pennyweights and is Platinum.GIA Certificate
    G&S Price: $6,900.00
    Item #:S515667
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    GIA Certified round brilliant diamonds studs 1.57cts H color VS1 clarity and 1.55cts G color VS2 clarity

    GIA Certified round brilliant diamonds studs 1.57 cts H color VS1 clarity and 1.55 cts G color VS2 clarity set in 18k white gold over 3 carats.GIA CertificateGIA Certificate
    G&S Price: $26,100.00
    Item #:S510607
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    Princess cut diamonds by-the-inch necklace

    Diamond pendant necklace with 5 carats of princess cut diamonds-by-the-inch accenting a GIA certified center pear shape diamond 3.84 cts (J color, SI2 clarity). Length 16 inches.GIA Certificate
    G&S Price: $27,700.00
    Item #:S515791
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    Made for Princess Diamonds by-the-inch

    Made for Princess Diamonds by-the-inch with bezel set round sparkling diamond accents over 5.5 cts set in 14k white gold. Round center diamond GIA certified round brilliant diamond 3.01cts G color SI1 clarity. Length 16 inches.GIA Certificate
    G&S Price: $47,500.00
    Item #:S515797
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    GIA certified round brilliant diamond 1.21 ct J color, VS2 ct set in platinum

    GIA certified round brilliant diamond 1.21 ct J color, VS2 ct set in platinum setting with 2 baguettes .20 ct each and 2 triangular diamond .10 ct each H color VS2. Size 5.

    This GIA certified ring is currently size 5 and some items can be sized up or down, please ask! It weighs 5.7 pennyweights and is Platinum.GIA Certificate
    G&S Price: $8,400.00
    Item #:S515712
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    GIA certified Circular brilliant diamond 2.44 cts I color VS1 clarity

    GIA certified European cut circular brilliant cut 2.44 carat diamond (I color, VS1 clarity) in 18k white gold setting with approx. 1 carat in pave set accent side diamonds. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 4.2 pennyweights and is 18k White Gold.GIA Certificate
    G&S Price: $17,100.00
    Item #:S515686
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    Natural fancy yellow diamond ring

    Gorgeous Natural fancy yellow diamond ring radiant cut 0.81cts with VS2 clarity set in 18k yellow and white gold with approx. 0.27cts in white diamond accents on sides. Size 6.75. Width: 9.8mm.

    This GIA certified ring is currently size 6.75 and some items can be sized up or down, please ask! It weighs 2.7 pennyweights and is 18k White Gold.
    G&S Price: $7,040.00
    Item #:S515684
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    GIA certified round brilliant diamond studs 1.19 cts I color, VS1 clarity and 1.19 cts I color, VVS2 clarity

    GIA certified round brilliant diamond studs 1.19 cts I color, VS1 clarity and 1.19 cts I color, VVS2 clarity total 2.38 cts set in 4 prong white gold basket setting.GIA CertificateGIA Certificate
    G&S Price: $11,250.00
    Item #:S515536
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    GIA certified 3.02 carat round brilliant diamond I color, SI2 clarity

    GIA certified round brilliant cut diamond 3.02 carat (I color, SI-2 clarity, Excellent polish, Excellent symmetry) set in elegant platinum setting with two side baguette diamonds. Size 6.5

    This GIA certified ring is currently size 6.5 and some items can be sized up or down, please ask! It weighs 3.6 pennyweights and is Platinum.GIA Certificate
    G&S Price: $23,950.00
    Item #:S515494
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    Gia Certified Round Brilliant Diamond Ring With 2.15 Carat

    GIA Certified Lovely thick Round Brillian Cut Diamond 2.15 Carat, J color, SI2 clarity ring surrounded approx 3 carats in princess cut diamonds ( H-I color, SI1 clarity ) in 18k white gold. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 8.6 pennyweights and is 18k White Gold.GIA Certificate
    G&S Price: $14,535.00
    Item #:S515548
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