Lab Grown Auctions


30 North Gould Street, Sheridan, US 82801
307-752-3640

About Auction House

Lab Grown Auctions is proud to offer 100% conflict-free diamonds that are ethically grown in state-of-the-art facilities.

Auction Previews & News

5 Results
  • 12.74 ct, Vivid Yellow/VS1, Radiant cut IGI Graded Lab Grown Diamond
    Auction Preview
    High-Carat Cultured Diamonds and Jewelry Pieces Highlight Lab Grown Auctions’ Upcoming Sale

    In the latest two-day sale from Lab Grown Auctions, over 300 GIA/IGI-certified lab-grown diamonds and jewelry pieces will come under the hammer. The Sheridan, Wyoming-based Lab Grown Auctions offers ethically grown, conflict-free diamonds while promoting environmental sustainability. Natural diamonds have the same properties as cultured diamonds, including the same Mohs hardness of 10. Leading the catalog is a 12.74-carat, radiant-cut diamond with vivid yellow color and VS1 clarity. The stone's girdle has a laser-etched IGI number and a grading certificate. This large stone can be adapted into a ring, pendant, necklace, bracelet, or earring. Other highlights from Day 2 of this auction are a 3.09-carat princess-cut diamond, a 5.59-carat round-cut diamond, and a pair of 25.03-carat pear-cut diamonds. Among jewelry items in the sale, a long diamond tennis necklace with 135 diamonds is particularly notable. Set in platinum, the round diamonds together weigh 15 carats, ranging in color from E to G, and with VS1 - VS2 clarity. This diamond event offers a variety of cuts, including round, cushion, emerald, and heart cuts, starting as low as 1.00 carat. To browse the complete NO RESERVE LOTS- GIA-IGI Certified Diamonds and Jewelry | Day 2 sale and find other online auctions, visit Bidsquare. Browse the latest auction previews and news on Auction Daily. 

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  • Oval-Cut 41.81-Carat IGI Graded
    Auction Preview
    Oval-Cut 41.81-Carat IGI Graded Lab-Grown Diamond Available in Two-Day June Sale

    Lab Grown Auctions will offer an array of lab-grown diamonds and jewelry pieces in its upcoming two-day sale. About 700 gems alongside necklaces, bracelets, pendants, and bangles will be available across both days. Lab Grown Auctions produces 100% conflict-free diamonds that are ethically grown in state-of-the-art facilities. Each lot in the two-day event comes with either a GIA (Gemological Institute of America) or an IGI (International Gemological Institute) report certificate. Leading the first day of the auction is a 41.81-carat oval-cut diamond with G color and VS2 clarity. This recently-cut diamond includes a laser-inscribed IGI number on the girdle and a grading report. Other highlights from Day 1 of this auction are a 41.72-carat radiant-cut diamond, a 30.33-carat pear-cut diamond, and a pair of pear-cut diamonds measuring 24.10 carats.  Day 2 of the auction presents additional high-carat stones, including a 19.52-carat heart-cut diamond with fancy vivid yellow color and VS1 clarity. This precious stone is also recently cut and customizable. Bidders can consider a 20-carat round tennis necklace embellished with 120 round-cut diamonds. This piece, set in 14-karat white gold, comes with a complimentary presentation set. A range of cuts and carat weights are offered, starting at just 1.05 carat. To view the complete catalog for the NO RESERVE LOTS- GIA-IGI Certified Diamonds | Day 1 sale, and find other online auctions, visit Bidsquare. 

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  • 17.51 ct, Emerald cut IGI Graded Lab Grown Diamond
    Auction Preview
    Emerald-Cut 17.51-Carat IGI Graded Lab Grown Diamond Available With Lab Grown Auctions

    This upcoming sale from Lab Grown Auctions offers a wide selection of laboratory-grown diamonds. A total of 50 loose gems with either GIA (Gemological Institute of America) or IGI (International Gemological Institute) report certificates will be available. Based in Sheridan, WY, Lab Grown Auctions produces 100% conflict-free diamonds that are ethically grown in state-of-the-art facilities. Leading this one-day auction is a 17.51-carat emerald-cut diamond with F color and SI1 clarity. This recently-cut stone includes a laser-inscribed IGI number on the girdle, and a grading report. Also notable is a 16.16-carat round-cut diamond with F color and S12 clarity.  Bidders can consider a range of cuts, from heart and cushion to square and emerald cuts. Various carat weights are also available, starting at 2.34 carats. Additional high-carat stones include a 13.35-carat radiant-cut diamond with G color and SI1 clarity. This large stone is also recently cut and can be customized for a ring, bracelet, bangle, brooch, pendant, necklace, or earring. To view the complete catalog for the NO RESERVE- New Year’s Day Dazzling Diamonds sale and find other online auctions, visit Bidsquare. 

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  • 35.50 carat diamond pair, Cushion cut Diamonds IGI Graded
    Auction Preview
    GIA-IGI Certified Lab-Created Diamonds Come to Sale With Lab Grown Auctions

    Lab-grown diamonds are human-made synthetic stones produced in a controlled environment in contrast to naturally-formed ones. They are made of the same material as the ones found in nature with identical physical and chemical characteristics. Antoine Lavoisier, the central figure in modern chemistry, first discovered this similarity. Thereafter, several scientists, including James Ballantyne Hannay and Ferdinand Frédéric Henri Moissan, attempted to convert low-cost forms of carbon into diamond. The upcoming sale from Lab Grown Auctions will offer a variety of laboratory-created diamonds. One of the highlights is a pair of diamonds, weighing 35.50 carats. The cushion cut diamonds are IGI graded and have a "crushed ice" or needle-like facet pattern. Another noteworthy piece is a heart cut gem, weighing 21.53 carats. The heart-shape diamond was first mentioned in the 15th century in a correspondence between the Duke of Milan and his confidante. An oval cut stone of 17.23 carats also leads the listings. The elongated form is a combination of the classic round brilliant and distinctive modern styles. It appears larger than its actual carat weight. To view the complete catalog and register to bid in the upcoming GIA-IGI Certified Real Diamonds, Lab Grown sale, visit Bidsquare and browse other online auctions.

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  • 21.58 ct, F/VS1, Emerald cut Diamond IGI Graded Lab Grown Diamond
    Auction Preview
    High-Carat Lab-Grown Diamonds Available in Two-Day October Sale

    In this upcoming two-day sale from Lab Grown Auctions, a wide variety of lab-grown diamonds will be available. A total of 700 loose gems will be offered across both days. Based in Sheridan, WY, Lab Grown Auctions offers conflict-free diamonds that are ethically grown and cause minimal environmental damage. Each lot in the two-day event comes with a complementary presentation set and a grading certificate from both the Gemological Institute of America (GIA) and the International Gemological Institute (IGI). Leading the first day of the auction is a 21.58-carat emerald-cut diamond with F color and VS1 clarity. This recently-cut stone includes a laser-inscribed IGI number on the girdle, as well as a grading report. Also notable from Day 1 of this auction is a 19.78-carat oval-cut diamond, a 17.58-carat heart-cut diamond, and a 15.00-carat radiant-cut diamond.  Day 2 of the upcoming sale presents additional high-carat stones, including a 22.15-carat pear-cut diamond with F color and VS1 clarity. This large stone is also recently cut and can be customized for a ring, bracelet, pendant, necklace, or earring. During Day 2 of this diamond event, bidders can consider a range of cuts, from round and emerald cuts to cushion and heart cuts. A variety of carat weights are also on offer, starting at just 1.00 carat. To view the complete catalog for the GIA-IGI Certified Real Diamonds, Lab Grown sale and find other online auctions, visit Bidsquare. 

    Lab Grown Auctions