Nikos Koulis ring 18karat blackened solid gold Asschercut white diamonds Total carat weight: 1.16 Made in Greece

Nikos Koulis 18K Blackened Gold Asscher Diamond Me Ring

18K white gold Polished finish Double-layer band Hoop charms Pavé setting Round brilliant-cut white diamonds Black enamel Hallmarked in the United Kingdom at the London Assay Office Made in Greece

Nikos Koulis 18K White Gold Oui Diamond Ring

18kt yellow gold baguette cut diamonds polished finish chain-link detailing

Nikos Koulis 18kt yellow gold diamond ring

18kt white gold round-cut 0.46ct diamonds claw/prong setting enamel detail wraparound style

Nikos Koulis 18kt white gold diamond and enamel ring

18K white gold Polished finish Octagon face Prong setting Emerald-cut white diamond Baguette-cut white diamond Black enamel Hallmarked in the United Kingdom at the London Assay Office Made in Greece

18K white gold Polished finish Open-ended band Bezel setting Round brilliant-cut white diamonds Black enamel Hallmarked in the United Kingdom at the London Assay Office Made in Greece

18K yellow and white gold Polished finish Snake-link chain band Channel setting Baguette-cut white diamonds Hallmarked in the United Kingdom at the London Assay Office Made in Greece

Nikos Koulis 18K Yellow Gold Feelings Diamond Ring

18K white gold Polished finish Spiral band Pavé and prong setting Round brilliant-cut white diamonds Oval-cut white diamond Black enamel Hallmarked in the United Kingdom at the London Assay Office Made in Greece

18kt white gold polished finish white diamonds enamel detail claw/prong setting

18kt white gold enamel detail pavé-set 0.35ct diamonds cut-out detailing polished finish

18kt white gold enamel detail round cut diamonds bezel setting open front polished finish

Nikos Koulis ring from the Oui Collection. 18-karat white gold with black enamel. White diamonds and tapered diamonds. 0.50 total diamond carat weight.

Nikos Koulis Oui Open Wrapped Diamond and Black Enamel Ring in 18k White Gold, Size 6.5

The Greek designer's name is rather synonymous with the Art Deco creations that have become his signature—and a red carpet staple. You'll find them here; alongside new glossy; yellow and white gold designs handcrafted in Athens by a father-son goldsmith duo. They make for a fresh finishing touch to an all-black look.

Nikos Koulis 18K White and Yellow Gold Feelings Thin Diamond Ring

Nikos Koulis 18K White and Yellow Gold Feelings Double Diamond Ring

The Greek jeweler is known for his futuristic spins on Art Deco-inspired lines that are equally refined and sensual—yet always carry a distinct strength. The starting point for the collection here; titled Feelings; is the yellow gold chain; which he twists; knots; and manipulates to exquisite; experimental effect; and finishes with his signature mix of variously-cut white diamonds.

Nikos Koulis Feelings 18K Yellow And White Gold Diamond Ring

Nikos Koulis 18K White and Yellow Gold Diamond Together Ring

Nikos Koulis ring from the Oui Collection. 18-karat white gold with black enamel. Green emerald with diamond baguettes. 0.75 total diamond carat weight. 0.58 total emerald carat weight.

Nikos Koulis18K White Gold Oui Diamond Ring

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Nikos Koulis 18K White Gold Oui Diamond Ring

Nikos Koulis 18kt white gold diamond and enamel ring