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18K Gold Cushion Cut Black Diamond Rings

4.32 Carat Black and White Diamond 18 Karat White Gold Engagement Ring
Stunning Black and White Diamond Cocktail or Engagement Ring that is a nothing but a Statement! The Rectangular Cushion Cut Black Diamond is 3.17 Carats and is surrounded by 52 Rou...
Category

2010s Modern Cocktail Rings

Materials

White Diamond, Black Diamond, 18k Gold, White Gold

Garnet and Black Diamond Ring in 18 Karat Rose Gold and Black Rhodium Finish
By Paolo Costagli
From the 'Intrecci' Collection, one-of-a-kind double cushion cut garnet ring set in 18 karat rose gold with black rhodium finish and pave-set black diamond detailing. The beauty is...
Category

21st Century and Contemporary Contemporary More Rings

Materials

Diamond, Black Diamond, Garnet, 18k Gold, Rose Gold, Rhodium

Green Tourmaline and Black Diamond Ring in 18 Karat White Gold Black Rhodium
By Paolo Costagli
From the 'Intrecci' Collection, faceted cushion shape green tourmaline ring set in 18 karat white gold with black rhodium finish and pave-set black diamond detailing. The beauty is...
Category

21st Century and Contemporary Contemporary Fashion Rings

Materials

Diamond, Black Diamond, Tourmaline, 18k Gold, White Gold, Rhodium

18 Karat White Gold Ring with White and Black Diamonds
By Poniros
Break the rules in style with black diamonds! Alluring and sensual jewelry creations handcrafted in 18 carat gold with black and white diamonds. One PONIROS cocktail ring handcrafte...
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Black Diamond, 18k Gold

18 Karat White Gold Ring with White and Black Diamonds
FREE SHIPPING
H 1.07 in. W 0.87 in. D 0.79 in.
Natural Kunzite and Black Diamond Contemporary Cocktail Ring
By Maiko Nagayama
This feminine British-London Hallmarked 18 karat yellow gold ring, set with highest quality of black diamonds and natural kunzite is from MAIKO NAGAYAMA's Haute Couture Collection ca...
Category

2010s Contemporary Engagement Rings

Materials

Black Diamond, Kunzite, 18k Gold

Natural Kunzite and Black Diamond Contemporary Cocktail Ring
FREE SHIPPING
H 1.13 in. W 0.77 in. D 0.56 in. Dm 0.56 in.
GIA Certified 6.83 Carat Blue Sapphire Diamond Halo Fashion Cocktail Gold Ring
By Beyond Fine Jewelry
GIA Certified Natural Blue Sapphire Cushion 6.83 Carat Heated Only encircled in a Double Halo of Black Diamonds 0.30 Carat and 20 Colorless VS-SI Diamond Marquise 1.62 Carat and Colo...
Category

21st Century and Contemporary Contemporary Cocktail Rings

Materials

Blue Sapphire, Diamond, White Diamond, Black Diamond, Sapphire, Gold, 18...

GIA Certified 6.13 Carat Cushion Cut Black Diamond and Emerald Cocktail Ring
By Unknown
This is a GIA certified 6.13 carat natural fancy black diamond. Its color is evenly distributed throughout the diamond. Round cut tsavorites, prong set and encrusted, around the blac...
Category

2010s Contemporary Cocktail Rings

Materials

Black Diamond, Emerald, 18k Gold, White Gold

GIA Certified Natural 3.47 Carat Cushion Black Diamond Cocktail Ring in 18 K
By Unknown
This is a picture perfect black and white combination like the keys on a Steinway piano. This ring features a 3.47 carat, GIA certified, natural cushion black diamond. It measures 9....
Category

2010s Contemporary Cocktail Rings

Materials

White Diamond, Black Diamond, 18k Gold, White Gold

Pradera 18kt white gold Ring w/ Black & white Dimonds & central 12ct Moon Stone
Irama Pradera is a Young designer from Spain that searches always for the best gems and combines classic with contemporary mounting and styles. These collection is inspired in classi...
Category

21st Century and Contemporary Art Nouveau Cocktail Rings

Materials

Diamond, Black Diamond, Moonstone, 18k Gold

Massive Blue Topaz Sapphire Diamond Gold Cocktail Ring
By Unknown
A large cocktail ring featuring a huge 23.51 carat cushion cut blue topaz (amazing color and brilliance). Accenting the topaz are 0.19 carats of blue sapphire and 0.19 carats of blac...
Category

21st Century and Contemporary Modern Cocktail Rings

Materials

Diamond, Black Diamond, Topaz, White Gold, 18k Gold

1.94 carat Cushion Cut Black Diamond Halo Ring in 19 karat White Gold Size 6.25
By H & H Jewels
1.94 carat Cushion Cut Black Diamond Halo Ring in 19 karat White Gold Size 6.25 Black diamonds are the rage for their sophisticated elegance. They provide and offer a unique and pl...
Category

21st Century and Contemporary Solitaire Rings

Materials

Diamond, Black Diamond, 18k Gold, White Gold

Frequently Asked Questions
Are prices for 18k gold cushion cut black diamond rings negotiable on 1stdibs?
Prices for most 18k gold cushion cut black diamond rings on 1stdibs are negotiable. You’ll see a "Make an Offer" button on the item details page, indicating that the seller is willing to consider a lower price. It’s not uncommon for customers to get 15–25% off the list price after negotiating. See our tips for negotiating like a pro.
Who sells 18k gold cushion cut black diamond rings online at 1stdibs?
Only experienced, professional sellers who have applied and been thoroughly vetted by our team of experts can sell 18k gold cushion cut black diamond rings and other quality items on our site. Learn more about becoming a 1stdibs seller.
What is the Buyer Protection Guarantee?
The 1stdibs Buyer Protection Guarantee provides coverage for qualified purchases in the unlikely event that the item arrives not as described or is damaged. We’ll work with you and the seller to find a resolution, ensuring your satisfaction. View details
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