GIA Certified Diamonds

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Why We Buy and Sell GIA Certified Diamonds, Wedding Bands, and Engagement Rings at Gray & Sons?

We are a local South Florida boutique offering a wide selection of GIA certified diamond jewelry, engagement rings, diamond bracelets, diamond necklaces, pendants, and loose diamonds to buy online or in our Miami Beach showroom. Conveniently located across the Bal Harbor shops our diamond jewelry comes with a GIA certificate and a one year warranty. We have in-house Gemologists at our boutique and are known as the top GIA Diamond dealer near Plantation, Boca Raton, Deerfield, West Palm Beach, and Pembroke Pines.

Top GIA Certified Diamond Dealer in South Florida

Any of the GIA certified diamonds you see here can be sold in the setting as it is shown or for a lower price if you want to just buy the loose diamond. We can also change the setting if you are in love with the diamond but would prefer a different setting. Call us for price quote and details.

Our curated collection of GIA diamond rings and diamond eternity bands offers a variety of cuts and sizes for any style. Gray & Sons may not have the largest selection of GIA Certified diamonds, but we sell the best diamonds at the best price! Why? We buy our diamond studs, diamond rings, engagement rings, and diamond jewelry from the public in Coral Gables, Brickell Avenue, Bal Harbor, as well as from all over the United States. There is no middle man involved. Our diamond specialists and jewelry experts handle the entire process with professionalism. The diamonds we buy are recut, polished, then sent to obtain a GIA certification. We then sell the diamond piece back on the market. If you want the best diamonds at the best price Gray & Sons Jewelers has it. By selling GIA diamonds as we have been for 30 years for the best price in the nation, we give a new life to every diamond. Get your diamond piece with us and feel great about your new accessory every time!

The #1 Place to Buy Engagement Rings and Diamond Eternity Bands

We send all our diamonds jewelry to GIA for certification because they are the gold standard world wide for diamonds. Since established in 1931, GIA has proved themselves as the world’s foremost grading and certification authority on diamonds, colored stones, and pearls. As a 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. When you want to sell your GIA Diamond to a certified dealer look to Gray & Sons. Our Miami showroom in Miami beach across from Bal Harbour shops is the top buyer and seller of all GIA certified diamond studs and diamond engagement rings.

Why GIA Diamonds?

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. With current deceptive practices all over the world today it is most important to buy a diamond with a GIA certificate to guarantee that you are not buying a man made diamond, or a diamond that has been treated with high heat and pressure to enhance the color ( HPHT ). GIA issues a complete Diamond Grading Report. 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. We’re the only jeweler in all of Miami Beach to offer this deal!

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  • GIA Certified Diamond 1 ct (E color, VVS2 clarity) ring set in platinum. Size 5.25

    GIA certified round brilliant cut diamond 1 carat (E color, VVS2 clarity) robust platinum setting. Size 5.25

    This GIA certified ring is currently size 5.25 and some items can be sized up or down, please ask! It weighs 5.8 pennyweights and is Platinum.GIA Certificate
    ESTIMATED RETAIL: $17,850.00 NEW MSRP: $17,850.00 G&S Price: $9,520
    SAVINGS: $8,330 (47% off)
    Financing available with .
    Item #:S513610
  • GIA Certified Marquise brilliant cut loose diamond 0.83 cts (H Color, SI2 Clarity)

    GIA Certified Marquise brilliant loose diamond 0.83 cts (H, SI2)GIA Certificate
    ESTIMATED RETAIL: $3,300.00 NEW MSRP: $3,300.00 G&S Price: $1,550
    SAVINGS: $1,750 (53% off)
    Financing available with .
    Item #:S512845
  • GIA certified square diamond 1.01 cts (E Color, SI1 Clarity) ring set in 14k white gold with diamond and amythest accents.

    GIA certified square diamond 1.01carat (E Color, SI1 Clarity) engagement ring in 14k white gold with diamond & amythest accents. 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 2.8 gramms and is 14k White Gold.GIA Certificate
    ESTIMATED RETAIL: $11,750.00 NEW MSRP: $11,750.00 G&S Price: $6,400
    SAVINGS: $5,350 (46% off)
    Financing available with .
    Item #:S511644
  • GIA Certified Emerald cut diamond 1.08 cts (J Color, VS1 Clarity) ring set in 14k yellow gold. Size 9.5

    GIA certified square emerald cut diamond 1.08 carat (J Color, VS1 Clarity, Excellent polish) ring set in a solitaire setting 14k yellow gold. Size 9.5.

    This GIA certified ring is currently size 9.5 and some items can be sized up or down, please ask! It weighs 1.5 pennyweights and is 14k.GIA Certificate
    ESTIMATED RETAIL: $7,400.00 NEW MSRP: $7,400.00 G&S Price: $4,920
    SAVINGS: $2,480 (34% off)
    Financing available with .
    Item #:S509405
  • GIA certified cushion modifed cut diamond 1.55 carat (H color, VS2 clarity) ring

    GIA certified cushion modifed cut diamond 1.55 carat (H color, VS2 clarity) ring set in an 18k white gold simple solitare. Size 7

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 2.4 pennyweights and is 18k White Gold.GIA Certificate
    ESTIMATED RETAIL: $17,550.00 NEW MSRP: $17,550.00 G&S Price: $8,800
    SAVINGS: $8,750 (50% off)
    Financing available with .
    Item #:S513425
  • GIA certified round brilliant cut diamond 1.05 carat (W-X Color, VS-1 Clarity) ring

    GIA certified round brilliant cut diamond 1.05 carat (W-X Color, VS-1 Clarity) ring set in a 14k yellow gold setting with matching band with diamond accents. Size 6.

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 3.5 pennyweights and is 14k.GIA Certificate
    ESTIMATED RETAIL: $7,250.00 NEW MSRP: $7,250.00 G&S Price: $4,470
    SAVINGS: $2,780 (38% off)
    Financing available with .
    Item #:S509952
  • GIA Certified diamond 1.01 cts (D Color, SI1 Clarity) ring set in 18k white gold. Size 8

    GIA Certified Marquise diamond 1.01 ct (D Color, SI1 Clarity) set in 18k white gold setting with approx. 1 ct in baguettes and princess cut diamonds; size 8.

    This GIA certified ring is currently size 8 and some items can be sized up or down, please ask! It weighs 4.5 pennyweights and is 18k White Gold.GIA Certificate
    ESTIMATED RETAIL: $13,550 NEW MSRP: $13,550

    G&S Regular Price: $7,410 56% off new MSRP

    G&S SALE PRICE: $5,900.00 56% off new MSRP

    SAVINGS: $7,650.00 (56%)
    Financing available with .
    Item #:S510337
  • GIA certified pear shaped diamond 1.18 cts (E Color, SI1 Clarity) ring set in platinum. Size 7.

    GIA certified pear shape diamond 1.18 carat (E Color, SI1 Clarity) ring diamond set in a platinum setting with 2 tapered side baguette diamonds. Size 7.

    This GIA certified ring is currently size 7 and some items can be sized up or down, please ask! It weighs 9.2 pennyweights and is Platinum.GIA Certificate
    ESTIMATED RETAIL: $13,300.00 NEW MSRP: $13,300.00 G&S Price: $7,500
    SAVINGS: $5,800 (44% off)
    Financing available with .
    Item #:S511898
  • GIA certified diamond 1.18 cts (F Color, VS1 Clarity) ring set in 18k white gold. Size 6

    GIA Certified Diamond Ring - 1.18 cts emerald cut diamond. (F Color, VS1 Clarity) in an 18k white gold setting with channel set baguette side diamonds.

    This GIA certified ring is currently size 6 and some items can be sized up or down, please ask! It weighs 5.7 pennyweights and is 18k.
    ESTIMATED RETAIL: $16,250.00 NEW MSRP: $16,250.00 G&S Price: $8,750
    SAVINGS: $7,500 (46% off)
    Financing available with .
    Item #:S512855
  • GIA certified heart-shaped diamond 1carat (F color, VS2 clarity) ring set in 14k yellow gold. Size 10.5

    GIA certified heart shape diamond 1 carat (F color, VS2 clarity) ring in 14k yellow gold setting. Size 10.5.

    This GIA certified ring is currently size 10.5 and some items can be sized up or down, please ask! It weighs 3.8 pennyweights and is 14k.GIA Certificate
    ESTIMATED RETAIL: $12,200.00 NEW MSRP: $12,200.00 G&S Price: $6,980
    SAVINGS: $5,220 (43% off)
    Financing available with .
    Item #:S507594
  • Center .97 carat GIA certified diamond (H color SI2 clarity), set in colorful 18k setting with diamond, ruby & emerald accents

    GIA certified pear shape diamond 0.97 carat (H color, SI2 clarity) set in colorful 18k wide setting with diamond, ruby & emerald accents. Size 5.5. Ring width: 15.5mm.

    This GIA certified ring weighs 14.1 pennyweights and is 18k.GIA Certificate
    ESTIMATED RETAIL: $8,550.00 NEW MSRP: $8,550.00 G&S Price: $5,100
    SAVINGS: $3,450 (40% off)
    Financing available with .
    Item #:S512628
  • GIA Certified Loose Diamond - 1.14 cts (H Color, SI2 Clarity)

    GIA Certified loose princess cut diamond 1.14 carat (H Color, SI2 Clarity)GIA Certificate
    ESTIMATED RETAIL: $7,524.00 NEW MSRP: $7,524.00 G&S Price: $4,260
    SAVINGS: $3,264 (43% off)
    Financing available with .
    Item #:S510030
  • GIA certified marquise cut diamond 0.93 cts (G Color, SI1 Clarity) set in 18k yellow gold. Size 8.5

    GIA certified marquise diamond 0.93 carat (G color, SI1 clarity) ring set in a 18k yellow gold setting with app 2.50 cts in baguette diamonds; size 8.5

    This GIA certified ring is currently size 8.5 and some items can be sized up or down, please ask! It weighs 9.2 pennyweights and is 18k.GIA Certificate
    ESTIMATED RETAIL: $10,600.00 NEW MSRP: $10,600.00 G&S Price: $6,950
    SAVINGS: $3,650 (34% off)
    Financing available with .
    Item #:S511368
  • GIA certified princess cut diamond 1.01 cts (H Color, VS2 Clarity) ring set in platinum.

    GIA certified princess cut diamond 1.01 carat (H Color, VS2 Clarity) set in platinum with side diamonds and sapphire accents. Size 5.

    This GIA certified ring is currently size 5 and some items can be sized up or down, please ask! It weighs 5.8 pennyweights and is Platinum.GIA Certificate
    ESTIMATED RETAIL: $10,680.00 NEW MSRP: $10,680.00 G&S Price: $8,450
    SAVINGS: $2,230 (21% off)
    Financing available with .
    Item #:S506856
  • GIA certified rectangular diamond ring 1.53 cts (I Color, VS2 Clarity) set in micro pave diamond 18k white gold.

    GIA certified rectangular diamond 1.53 carat (I color, VS2 clarity) ring set in a micro pave diamond approx. 1.5 cts set in 18k white gold swirl band. Size 5.75.

    This GIA certified ring is currently size 5.75 and some items can be sized up or down, please ask! It weighs 4.7 pennyweights and is 18k White Gold.GIA Certificate
    ESTIMATED RETAIL: $15,900.00 NEW MSRP: $15,900.00 G&S Price: $8,970
    SAVINGS: $6,930 (44% off)
    Financing available with .
    Item #:S510111
  • GIA certified rectangular modifed diamond 1.14 carats (U-V Range, VS2 Clarity) ring set in a platinum . Size 4.75

    Diamond ring with center stone weighing 1.14 carats U-V Range VS-2 Clarity in a platinum setting with rose cut diamond accents, GIA Certified- very good cut.

    This GIA certified ring is currently size 4.75 and some items can be sized up or down, please ask! It weighs 2.4 pennyweights and is Platinum.GIA Certificate
    ESTIMATED RETAIL: $9,200.00 NEW MSRP: $9,200.00 G&S Price: $5,200
    SAVINGS: $4,000 (43% off)
    Financing available with .
    Item #:S509713
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GIA Certified Diamonds

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