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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 engagement rings 2.03 ct emerald cut
    GIA certified engagement rings 2.03 ct emerald cut E color, VS2 clarity set in platinum setting with 2 side emerald diamonds each approx. 0.25 ct each E color, VS1 clarity. Size 8. Ring shank width 0.7 inches (2mm), head diameter 0.32 inches (8.3mm).

    This GIA certified ring is currently size 8 and some items can be sized up or down, please ask! It weighs 6.2 pennyweights and is Platinum.GIA Certificate
    G&S Price: $24,500.00
    Item #:S515286
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    Cartier engagement ring 1.01 ct F color, IF clarity in platinum
    Cartier engagement ring 1.01 ct Round Brilliant Diamond F color, Internally Flawless with GIA certificate, Excellent Cut, Excellent polish, Excellent symmetry set in platinum setting with 9 diamonds on each side approx. 0.60 ct. Size 6. With Cartier box, original receipt and GIA certificate. Size 6.

    This Cartier ring is currently size 6 and some items can be sized up or down, please ask! It weighs 2.4 gramms and is Platinum.
    G&S Price: $19,500.00
    Item #:S515405
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    GIA certified 2.38 cts radiant cut fancy yellow diamond in 14k w/g setting with .57 cts in diamonds
    GIA certified 2.38 cts radiant cut fancy yellow diamond in 14k w/g setting with .57 cts in round diamonds. Size 8.25

    This GIA certified ring is currently size 8.25 and some items can be sized up or down, please ask! It weighs 4.2 pennyweights and is 14k White Gold.
    G&S Price: $21,500.00
    Item #:S515365
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    GIA certified cushion cut diamond 1.01 carat G color, VS2 clarity diamond ring
    GIA certified cushion cut diamond 1.01 carat G color, VS2 clarity diamond ring set in white gold double halo micro pave diamond setting with over 0.50 cts in white clean diamonds. Size 6. Width at the shank is 0.09 inches (2.3 mm), width at the top is 0.51 inches (12.9mm).

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 3.3 pennyweights and is 14k.
    G&S Price: $6,200.00
    Item #:S515336
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    GIA certified 0.96cts diamond ring in 14k gold setting
    GIA certified diamond ring 0.96 carats (L, I2 ) in 14k gold setting. Size 7.

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 1.7 pennyweights and is 14k.
    G&S Price: $1,600.00
    Item #:S515337
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    GIA Certified Round Diamond Studs1.20 ct M, Faint Brown Color, VVS2 Clarity, 1.14 ct M Color, SI2 Cl
    GIA Certified Round Diamond Studs 1.20 ct M, Faint Brown Color VVS2 Clarity, 1.14 ct M, SI1 Clarity for a total of 2.34 ctsGIA Certificate
    G&S Price: $6,470.00
    Item #:S514857
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    GIA Certified Round Diamond Studs 1.10 ct J Color VVS1 Clarity, 1.15 K Color, VS2 Cl
    GIA Certified Round Diamond Studs 1.10 ct J Color, VVS1 Clarity, 1.15 ct K Color VS2 Clarity for a total of 2.25 cts.GIA Certificate
    G&S Price: $11,795.00
    Item #:S514858
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    GIA Certified round diamond studs 1.58cts K Color VS2 Clarity 1.66cts J Color VVS2 Clarity
    GIA Certified Round diamond studs 1.58cts K Color VS2 Clarity 1.66 J Color VVS2 Clarity for a total of 3.24cts in round diamondsGIA Certificate
    G&S Price: $16,350.00
    Item #:S514860
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    Ball of fire pave diamond Dome ring in 18k white gold
    Ball of fire pave diamond Dome ring in 18k white gold with diamond accents around center GIA Certified Emerald Cut Diamond 1.10 cts (E Color VS-1 Clarity) .43cts (G Color VVS-2) .40cts (K Color VVS-2) stylish ring with 100 diamonds x 0.02 cts for a total of app. 2 cts H color SI1 clarity.Size 6.25 Width at the shank is 0.16 inches (4mm), width at the top is 0.54 inches (13.9mm).

    This GIA certified ring is currently size 6.25 and some items can be sized up or down, please ask! It weighs 7.6 pennyweights and is 18k White Gold.GIA Certificate
    G&S Price: $13,780.00
    Item #:S514242
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    GIA certified Marquise diamond ring - 2.23 cts J color, VS2 clarity.
    GIA certified Marquise diamond ring - 2.23 cts J color, VS2 clarity in 14k white gold setting. 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 2.1 pennyweights and is 14k White Gold.
    G&S Price: $10,150.00
    Item #:S515348
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    GIA certified pear brilliant shaped diamond ring
    One of a kind and large GIA certified 8.65cts W to X range color, I1 clarity center pear brilliant shaped diamond ring mounted in 18k yellow gold setting surrounded by waves of baguette and round diamonds approx. 3 cts. Size 6. Width at the shank is 0.15 inches (3.9mm), 0.79 inches (20.1mm).

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 10.7 pennyweights and is 18k.
    G&S Price: $38,700.00
    Item #:S515335
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    Lovely heart necklace in 18k
    Stunning Heart necklace with GIA certified center 1.70 carat H color, VS1 clarity diamond circled by approximately 2.5 cts in baguette and round diamonds set in lovely heavy link necklace in 18k yellow gold. 17.5" long. Width of the necklace chain at the biggest part - 0.34 inches (8.7mm), width of the heart 0.78 inches (19.8mm) by 0.79 inches (20,1mm).
    G&S Price: $17,325.00
    Item #:S515303
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    GIA certified Tiffany & Co Lucida earrings
    GIA certified Tiffany & Co Lucida platinum drop diamond earrings, set with one round brilliant cut diamond weighing 0.50 carat, G color, VS1 clarity, one round brilliant cut diamond weighing 0.50 carat, G color, VS1 clarity, one Lucida cut-cornered square mixed cut diamond weighing 3.99 carats, G color, VS2 clarity, and one Lucida cut-cornered square mixed diamond weighing 3.98 carats, G color, VS1 clarity.GIA Certificate
    G&S Price: $198,000.00
    Item #:S515309
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    GIA certified diamond ring 2.01 carat H color, VS2 clarity
    GIA certified diamond ring 2.01 carat H color, VS2 clarity Tacori engagement ring in 18k white gold with diamond accents. 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 2.4 pennyweights and is 18k White Gold.GIA Certificate
    G&S Price: $21,000.00
    Item #:S515236
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    GIA certified diamond ring 1.59 ct D color, VVS2 clarity
    GIA certified diamond ring 1.59 ct D color, VVS2 clarity Excellent cut set in platinum. Size 6

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 2.6 pennyweights and is Platinum.GIA Certificate
    G&S Price: $23,800.00
    Item #:S515199
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    GIA certified diamond 0.95 E color, SI1 clarity
    GIA certified diamond 0.95 E color, SI1 clarity set in 14k white gold ring with 0.80 cts diamond accents. Size 4

    This GIA certified ring is currently size 0 and some items can be sized up or down, please ask! It weighs 3.7 pennyweights and is 14k White Gold.GIA Certificate
    G&S Price: $4,950.00
    Item #:S515198
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    GIA certfied 2.10 cts O to P range color, SI1 clarity
    Classic Claw ring in 18k yellow gold for a gentlemen with a GIA Certified 2.10 ct (O-P color, SI1 clarity) Round Brilliant Cut diamond. 0.30 inches (7.5mm) top width tapering down to 0.14 inches (3.5mm) at the bottom of the shank. Size 11.

    This GIA certified ring is currently size 11 and some items can be sized up or down, please ask! It weighs 9.5 pennyweights and is 18k Yellow Gold.GIA Certificate
    G&S Price: $10,700.00
    Item #:S515077
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    Diamond studs 1.27 cts (I, VS2), 1.30cts (I, VS1)
    GIA certified round brilliant cut diamond studs 2.57 total weight in a 4 prong basket setting.GIA CertificateGIA Certificate
    G&S Price: $9,790.00
    Item #:S515304
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    Diamond pin with pear, baguett and round shape diamonds
    Frosted Platinum Diamond pin with over 20 cts in round, pear and baguette diamonds with an average of H Color VS Clarity. 2 Pear shape diamonds are GIA Certified 0.86 ct G Color VS-1 Clarity and 0.79 ct G Color SI-1 Clarity. All other stone are in the range is G-I Color, VS-SI Clarity. Length 2.51 inches (63.9mm), width 1.56 inches (39.6mm).GIA CertificateGIA CertificateGIA CertificateGIA Certificate
    G&S Price: $35,900.00
    Item #:S514636
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    GIA certified cushion brilliant diamonds 1.66 cts I color SI2 clarity, 2.03 cts K color SI1 clarity set in a fan sapphire and diamond earrings in platinum.
    GIA certified cushion brilliant diamonds 1.66 ct (I color, SI2 clarity) and 2.03 ct (K color, SI1 clarity) with a fanned earring with round diamonds and blue sapphiers in platinum.GIA CertificateGIA Certificate
    G&S Price: $14,500.00
    Item #:S514844
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    GIA Certified round brilliant cut diamond 0.74 cts set in Scot Kay platinum engagement ring
    GIA Certified 0.74 ct (D color, SI1 clarity) Round Brilliant Cut diamond set in a Scott Kay platinum setting featuring an intricate engraving design along side and two accent diamond on basket. Size 6.75. Width at the shank is 0.08 inches (2mm), width at the top is 0.22 inches (5.7mm).

    This GIA certified ring is currently size 6.75 and some items can be sized up or down, please ask! It weighs 3.7 pennyweights and is Platinum.GIA Certificate
    G&S Price: $5,850.00
    Item #:S514849
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    AGL certified Burma ruby 3.02 cts ring in platinum
    AGL certified Burma heated ruby 3.02 cts (stability index: excellent to very good, color stability: excellent) ring with GIA trapezoid diamonds on each side 0.54 cts I color, I1 clarity and 0.58 cts I color, Si1 clarity in platinum. Size 6.5

    This Diamond/Ruby ring is currently size 6.5 and some items can be sized up or down, please ask! It weighs 5.6 pennyweights and is Platinum.GIA Certificate
    G&S Price: $19,500.00
    Item #:S514495
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    GIA certified engagement diamond ring 1.51 cts in 18k yellow gold
    GIA certified engagement sparkling mounted diamond ring 1.51 cts G color, SI2 clarity center stone with 4 side diamonds - 2 side approx. 0.20 cts each, 2 side approx. 0.05 cts in 18k yellow gold. Size 7.75

    This GIA certified ring is currently size 7.75 and some items can be sized up or down, please ask! It weighs 5.8 pennyweights and is 18k.
    G&S Price: $8,900.00
    Item #:S515154
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    Gia Certified Emerald Cut Diamond earrings 1.01 cts L Color VVS2 clarity, 1.11 cts K Color VS2 clarity set in 18k white gold.
    GIA Certified Emerald Cut Diamond earrings 1.01 cts (L Color , VVS2 Clarity) and 1.11 cts (K Color, VS2 Clarity) set with an elegant drop of 0.17 cts round diamonds set in 14k white gold.GIA CertificateGIA Certificate
    G&S Price: $9,900.00
    Item #:S514868
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    GIA Certifiend diamond ring 0.74 cts (H color, VS2 clarity) set in 14k
    GIA Certifiend diamond ring 0.74 cts (H color, VS2 clarity) set in 14k. Size 6.

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 1.6 pennyweights and is 14k.GIA Certificate
    G&S Price: $2,950.00
    Item #:S515029
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    Gia Certified Round Diamond .70 Cts H Color Si2 Clarity
    Gia Certified Round Diamond .70 Cts H Color Si2 ClarityGIA Certificate
    G&S Price: $1,850.00
    Item #:S514712
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    GIA Certified Round Diamond 1.03 cts M Color VVS2 Clarity
    GIA Certified Round Diamond 1.03 cts M Color VVS2 ClarityGIA Certificate
    G&S Price: $3,050.00
    Item #:S514700
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    GIA Certified Round Diamond Studs 1.14cts J Color VS2, 1.12cts H Color VS1 Clarity
    GIA Certified Round Diamond Studs 1.14cts J Color VS2, 1.12cts H Color VS1 Clarity for a total of 2.26ctsGIA CertificateGIA Certificate
    G&S Price: $13,065.00
    Item #:S514843
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    GIA Certified Diamond Studs 1.03 round diamond G Color, Clarity VVS2 1.03 cts G Color VS1
    GIA Certified Round Diamond Studs1.03 ct (G Color , VVS2 Clarity) and 1.03ct (G Color, VS1 Clarity) set in a 3 prong 18k white gold setting for a total weight of 2.06 cts.GIA CertificateGIA Certificate
    G&S Price: $13,100.00
    Item #:S514842
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    GIA Certified Round Diamond Studs 1.31 J Color VVS2 Clarity 1.44cts I Color VVS2 Clarity
    GIA Certified Round Diamond Studs 1.31ct ( J Color, VVS2 Clarity) and 1.44 ct (I Color, VVS2 Clarity) set in a 3 prong 18k white gold setting for a total weight of 2.75 cts.GIA CertificateGIA Certificate
    G&S Price: $14,300.00
    Item #:S514845
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    GIA Certified Round Diamonds Studs 1.00cts H Color VS1 Clarity 1.03cts J Color SI1 Clarity
    GIA Certified Round Diamonds Studs 1.00cts H Color VS1 Clarity 1.03cts J Color SI1 Clarity for a total of 2.03cts in diamondsGIA CertificateGIA Certificate
    G&S Price: $11,625.00
    Item #:S514861
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    GIA certified diamond studs 1.16cts I color VS2 clarity 1.12cts K color VVS1 clarity
    GIA certified diamond studs 1.16cts I color VS2 clarity 1.12cts K color VVS1 clarity for total of 2.28cts in round diamonds. Hanging length 0.27" (7mm), width 0.27" (7mm).GIA CertificateGIA Certificate
    G&S Price: $11,800.00
    Item #:S514862
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    GIA Certified Round Diamond Studs 1.52cts M Color VS1 Clarity, 1.50cts N Color VS2 Clarity
    GIA Certified Round Diamond Studs 1.52cts M Color VS1 Clarity, 1.50cts N Color VS2 Clarity for a total of 3.02cts. Hanging length 0.35" (9mm), width 0.35" (9mm).GIA CertificateGIA Certificate
    G&S Price: $11,025.00
    Item #:S514846
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    GIA certified fancy yellow natural diamond ring with diamond accents set in 18k white gold
    GIA certified Fancy Yellow Natural 0.51 ct center diamond with 0.58 cts in double halo & split open shank 18k white gold setting. Size 6.

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 5.6 gramms and is 18k White Gold.
    G&S Price: $5,550.00
    Item #:S514882
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    GIA certified fancy light to fancy brownish yellow natural color diamond ring in 18k white gold
    GIA certified Fancy Light to Fancy Brownish Yellow Natural Color 1.02 ct diamond ring with 0.58 cts in white diamond accents set in 18k white gold. Size 6.25

    This GIA certified ring is currently size 6.25 and some items can be sized up or down, please ask! It weighs 4.4 gramms and is 18k White Gold.
    G&S Price: $8,100.00
    Item #:S514884
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    GIA certified diamond engagemen ring app. 1.71 cts I color, VS2 clarity comes with wedding band
    GIA certified diamond engagemen ring with 1.71 carat center stone I color VS2 clarity, set with 10 diamond accents approx . 0.13 cts total diamond weight. Comes with matching wedding band in platinum set with 13 diamonds approx. total diamond weight 0.21 cts. The beauty of this rings will make the bride glow with happiness. Size 5.5.

    This Diamond ring is currently size 5.5 and some items can be sized up or down, please ask! It weighs 6.7 pennyweights and is Platinum.
    G&S Price: $12,600.00
    Item #:S514811
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