An engineer by training, jewelry designer Nigel O’Reilly is drawn to precision. His opulent designs, including the Hemisphere ring, push the limits of creativity and scale.&nbsp; <a href="https://www.sothebys.com/en/buy/luxury/jewelry" rel="noopener noreferrer" target="_blank">All Jewelry</a>

Nigel O'Reilly

Centering a rectangular fancy cut topaz, accompanied by pavé set brilliant cut rubies, sapphires, pink sapphires, diamonds and blue diamonds. <ul><li>Topaz weighs 11.90 carats, cut by Erwin Springbrunn</li><li>Accent stones weighing a total of 2.18 carats</li><li>18 karat white gold</li><li>Total weight 8.38 grams</li><li>Size 7½</li></ul>

White Gold, Topaz, and Gemset Ad Lucem Ring

Centering a Lightning Ridge Black Opal, with a half latticework sphere dissolving into the jewel accented by blue and pink sapphires, rubies and green diamonds.<ul><li>Opal weighs 5.43 carats</li><li>Accent stones weighing a total of 2.55 carats</li><li>18 karat rose gold</li><li>Total weight 10.7 grams</li><li>Size 8½</li></ul>

Rose Gold, Opal, Ruby, Sapphire and Diamond Hemisphere Ring

Centering a deep red umbalite garnet, accented by 777 pavé set rubies, blue diamonds and sapphires.<ul><li>Umbalite garnet weighs 10.60 carats</li><li>Accent stones weighing a total of 0.61 carat</li><li>18 karat rose gold</li><li>Total weight 8.8 grams</li><li>Size 7</li></ul>

Rose Gold, Garnet, Diamond, Ruby and Sapphire Persephone Ring

Centering a morganite, accented by pavé-set colorless and brown diamonds.<ul><li>Morganite weighs 69.35 carats, cut by Erwin Springbrunn</li><li>Diamonds weighing a total of 3.24 carats</li><li>18 karat rose gold</li><li>Total weight 48.28 grams</li><li>Pendant measurements 45.55 x 35.68 x 21.05mm</li></ul>

Rose Gold, Morganite and Diamond Talisman Pendant

Centering a sky blue topaz, accented by 731 pavé set rubies, blue diamonds and orange sapphires. <ul><li>Topaz weighs 22.32 carats</li><li>Diamonds weighing a total of 2.51 carats</li><li>18 karat rose gold</li><li>Total weight 15.52 grams</li><li> Size 6</li></ul>

Rose Gold, Topaz and Gemset Persei Ring                                                  

Centering a Mandarin Garnet, accented by pavé set brilliant cut orange and blue sapphires. <ul><li>Garnet weighs 10.55 carats</li><li>Accent stones weighing a total of 1.00 carat</li><li>18 karat rose gold</li><li>Total weight 6.45 grams</li><li>Size 6</li></ul>

Rose Gold, Mandarin Garnet and Sapphire Apollo Orange Ring

Centering a golden hyacynth zircon, accented by blue and orange sapphires and yellow, blue and green diamonds. <ul><li>Zircon weighs 10.08 carats </li><li>Accent stones weighing a total of 1.42 carats</li><li>Lightning ridge black opal weighs 5.96 carats </li><li>18 karat rose gold</li><li>Total weight 9.2 grams</li><li>Size 6½</li></ul>

Rose Gold, Zircon, Sapphire and Diamond Amun Ra Ring

Centering a topaz and a yellow beryl, accented by pavé set brilliant cut diamonds.<ul><li>Topaz weighs 3.51 carats, cut by Erwin Springbrunn</li><li>Yellow beryl weighs 2.27 carats, cut by Erwin Springbrunn</li><li>Accent stones weighing a total of 1.18 carats</li><li>18 karat yellow gold</li><li>Total weight 8.81 grams</li><li>Measurements 55.87 x 15.41mm</li></ul>

Gold, Zircon, Beryl and Diamond Helios and Selene Drop Earrings

Centering a Swiss blue topaz, accented by pavé-set brilliant cut diamonds, rubies and pink sapphires.<ul><li>Topaz weighs 4.50 carats, cut by Erwin Springbrunn</li><li>Accent stones weighing a total of 2.46 carats</li><li>18 karat rose gold</li><li>Total weight 10.8 grams</li><li>Measurements 40.29 x 19.04 x 5.87mm</li></ul>

Rose Gold, Topaz, Diamond, Ruby and Pink Sapphire Aquatio Teardrop Necklace

Each centering a pear-shaped diamond, accented by pavé-set rubies and green diamonds.<ul><li>Pear-shaped diamonds weighing a total of 1.02 carats</li><li>Accent stones weighing a total of 2.97 carats</li><li>18 karat rose gold</li><li>Total weight 10.1 grams</li><li>Measurements 19 x 11.5 x 15mm</li><li>Accompanied by GIA report no. 7408290033, dated 7 September 2021, stating that the 0.52 carat diamond is G color and SI1 clarity</li><li>Accompanied by GIA report no. 2407822953, dated 20 October 2021, stating that the 0.50 carat diamond is G color and VS1 clarity</li></ul>

Rose Gold, Diamond and Ruby Andromeda Cufflinks

Centering a faceted deep purple cultured freshwater pearl, accented by diamonds.<ul><li>Cultured pearl measures approximately 12.4mm</li><li>Diamonds weighing a total of 3.22 carats</li><li>18 karat white gold</li><li>Total weight 29.2 grams</li><li>Size 6 ½</li></ul>

White Gold, Faceted Cultured Pearl and Diamond Estella Ring

Centering a Lightning Ridge black opal, accented by pavé-set blue sapphires and green diamonds.<ul><li>Opal weighs 5.43 carats</li><li>Accent stones weighing a total of 1.88 carats</li><li>18 karat rose gold</li><li>Total weight 9.73 grams</li><li>Size 7½</li></ul>

Rose Gold, Opal, Sapphire and Diamond Cat's-Eye Nebula Ring

Centering a faceted cultured pink freshwater pearl, accented by pink, blue and colorless diamonds.<ul><li>Cultured pink freshwater pearl measures approximately 14.5mm</li><li>Diamonds weighing a total of 4.81 carats</li><li>18 karat rose gold</li><li>Total weight 24.84 grams</li><li>Size 7</li></ul>

Rose Gold, Cultured Pearl and Diamond De Ville Ring

Centering a yellow zircon and a red spinel, accented by pavé-set brilliant cut diamonds, rubies and pink and orange sapphires.<ul><li>Zircon weighs 2.03 carats, cut by Erwin Springbrunn</li><li>Red spinel weighs 2.09 carats, cut by Erwin Springbrunn</li><li>Accent stones weighing a total of 2.97 carats</li><li>18 karat rose gold</li><li>Measurements 100 x 42 x 22mm</li></ul>

Rose Gold, Spinel, Zircon and Gemset Supernova Earrings

Centering a pear-shaped pink sapphire, accented by pavé-set brilliant cut pink sapphires, rubies, tsavorite garnets and diamonds.<ul><li>Pink sapphire weighs 0.86 carat</li><li>Accent stones weighing a total of 4.32 carats</li><li>18 karat rose gold</li><li>Total weight 16.9 grams</li><li>Size 7½</li></ul>

Rose Gold, Pink Sapphire and Gemset Rose Gallica Ring

Each composed of teardrop golden cultured pearls, accompanied by rubies pavé set on gold components. <ul><li>Cultured pearls measure 14.0mm</li><li>Rubies weighing a total of approximately 3.00 carats</li><li>18 karat white gold </li><li>Total weight 36.5 grams</li><li>Measurements 63.8x22.2mm</li></ul>

White Gold, Cultured Golden Pearls and Ruby Fuchsia Drop Earrings

Designed as folded origami, accompanied by inverted pavé set round brilliant cut diamonds, rubies, pink sapphires and orange sapphires.<ul><li>Gemstones weighing a total of approximately 2.35 carats</li><li>18 karat white gold, rhodium plated</li><li>Total weight 14.6 grams</li></ul>

White Gold, Diamond, Ruby, Pink Sapphire and Orange Sapphire Lace Comet Earrings

Centering a gold cultured pearl, surrounded by a jewel-encrusted full sphere pavé set with brilliant cut rubies, suspended by a half latticework sphere.<ul><li>Cultured pearl measures approximately 14mm</li><li>Rubies weighing a total of approximately 2.55 carats</li><li>18 karat rose gold</li><li>Total weight 12.30 grams</li><li>Size 7½</li></ul>

Rose Gold and Cultured Pearl Hemisphere Ring

Designed as a rose, composed of sapphires, rubies and tsavorites, centering a pear-shaped diamond.<ul><li>Diamond weighs 0.50 carat</li><li>Gemstones weighing a total of approximately 3.10 carats</li><li>18 karat rose gold</li><li>Total weight</li><li>Size 7½</li><li>Accompanied by GIA report no. 100734865896, stating that the 0.50 carat diamond is D color and VS1 clarity</li></ul>

Rose Gold, Diamond, Sapphire, Ruby and Garnet Blue Rose Ring

Of openwork design composed of sapphires and navette diamonds. <ul><li>Sapphires weighing a total of approximately 5.50 carats</li><li>Diamond weighing a total of approximately 3.00 carats</li><li>18 karat rose gold</li><li>Total weight 78 grams</li><li>Measurements 62x62x34.4mm</li></ul>

Rose Gold, Sapphire and Diamond Talisman Bangle Bracelet

Composed of diamonds, rubies, pink sapphires, orange sapphires. <ul><li>Gemstones weighing a total of approximately 2.70 carats</li><li>18 karat white gold</li><li>Total weight 14 grams</li></ul>

Rose Gold, Diamond, Ruby, Pink Sapphire, Orange Sapphire and Diamond Stardust Earrings

Centering a cultured golden pearl, with feather accents composed of tsavorites, sapphires, rubies and yellow diamonds. <ul><li>Cultured pearl measures 14.8mm </li><li>Gemstones weighing a total of approximately 5.75 carats</li><li>18 karat yellow gold</li><li>Total weight 23.09 grams</li><li>Size 6</li></ul>

Gold, Cultured Pearl, Sapphire, Tsavorite, Ruby, and Yellow Diamond Seed Takes Flight Ring

One set with a teardrop garnet and another with a teardrop beryl, accented by brilliant cut diamonds.<ul><li>Garnet weighs approximately 7.35 carats</li><li>Beryl weighs approximately 5.00 carats</li><li>Diamonds weighing a total of approximately 1.35 carats</li><li>18 karat rose gold</li><li>Total weight 11.40 grams</li><li>Measurements 56.7x16.25mm</li></ul>

Rose Gold, Garnet, Beryl and Diamond Jack and Queen Earrings

Centering a moonstone cabochon, accented by amethyst cabochons, pavé set brilliant cut pink sapphires and rubies. <ul><li>Moonstone weighs 8.35 carats</li><li>Amethyst weighing a total of 8.20 carats</li><li>Rubies and pink sapphires weighing a total of 1.95 carats</li><li>18 karat rose gold </li><li>Total weight 24 grams</li><li>Size 6</li></ul>

Rose Gold, Moonstone and Gemset Molecular Cloud Ring

Each set with navette cut aquamarines, accented by pink sapphire and white diamond pavé. <ul><li>Aquamarines weighing a total of 1.95 carats</li><li>Gemstones weighing a total of approximately 1.35 carats </li><li>18 karat rose gold </li><li>Total weight 7 grams</li><li>Measurements 54.50x6.80mm</li></ul>

Rose Gold, Aquamarine,  Pink Sapphire and Diamond Navette Earrings

Centering a fancy cut amethyst, with lattice detailing accompanied by pavé brilliant cut rubies, pink sapphires, orange sapphires, blue diamonds and green diamonds. <ul><li>Amethyst weighs 22.50 carats</li><li>Gemstones weighing a total of approximately 1.75 karats</li><li>18 karat rose gold </li><li>Total weight 13.9 grams</li><li>Size 6 </li></ul>

Nigel O'Reilly

Nigel O'Reilly

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