Colleen B. Rosenblat Cocktail Rings
German
Colleen B. Rosenblat believes that “it is not we who select the jewelry, but the jewelry that selects us.” Based in Hamburg, Germany, she is known for her contemporary pieces that feature unconventional color and form along with fine materials like pearls, precious gemstones and gold and silver.
When she was a child, Rosenblat stumbled across some smoky quartz in the forest. It ignited a passion for gemology and jewelry that took her around the world. As a teenager, she used a handful of jewelry-making tools borrowed from a friend to craft her own pieces out of silver.
Trips to Australian and Indonesian gemstone mines solidified her focus, and Rosenblat applied to study at the Gemology Institute of America in Los Angeles. After graduation, she studied in Idar-Oberstein in Germany, finished a goldsmith apprenticeship in Frankfurt and earned a jewelry design diploma from Parsons School of Design in New York. She then split her time between the United States and Germany, working as a freelance goldsmith for several years before opening her own workshop and award-winning showroom in Hamburg.
Designed by American architect and interior designer Michael Gabellini, Rosenblat’s showroom luxuriously presents her jewelry. Handmade furniture by American woodworker George Nakashima complements the interior. In 2000, the American Institute of Architects in Philadelphia awarded it the Institute Honor Award for Interior Architecture.
Rosenblat continues to produce exquisite jewelry under her brand. Her work has been featured in high-end fashion magazines such as Vogue, Elle, Harper’s Bazaar, Vanity Fair, InStyle and GQ.
On 1stDibs, find a collection of Colleen B. Rosenblat rings, earrings, necklaces and more.
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Creator: Colleen B. Rosenblat
Certified 51.21 Carat Mandarine-Garnet Rose Gold Cocktail Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
An eye-catching piece. 18 carat rose gold cocktailring. With an unique Mandarine-Garnet 51.21 ct and 2 Amethysts 2.41 ct in all. The Ring has been designed and handcrafted by Colleen...
Category
Early 2000s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Mandarin Garnet, Garnet, Amethyst, 18k Gold, Rose Gold
One of a Kind Ring in 18 Carat White Gold, with 1 Aquamarine of 140.4 ct
By Colleen B. Rosenblat
Located in Hamburg, DE
This very special cut could remind you of an iceberg.
It has a length of 48 mm and a wide of 29 mm. The head of the ring is 24 mm high.
Ring size: 54 (US 6.8)
Designed by Colleen B. ...
Category
1990s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Aquamarine, 18k Gold, White Gold
Scarab Ring in 18 Carat White Gold, 1 Moonstone 24.17 ct, 2 Rhodolites 0.67 ct
By Colleen B. Rosenblat
Located in Hamburg, DE
The most popular and widely recognised collection by Colleen B. Rosenblat. Engraved with the characteristic scarab motif, these colourful gems have been considered as lucky charms si...
Category
2010s German Egyptian Revival Colleen B. Rosenblat Cocktail Rings
Materials
Garnet, Moonstone, 18k Gold, White Gold
Middle Ages Ring, 18 Karat White Gold, 1 Emerald 14.86 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
middle ages ring
18 carat white gold
1 emerald 14.86 ct
Inspired by the elements and shapes of the Middle Ages, the collection is one of the most ...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Emerald, 18k Gold, White Gold
Colleen B. Rosenblat Aquamarine Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
This square setting is very modern and enhances the mirrored cut aquamarine 33.4 ct. Designed by Colleen B. Rosenblat.
Ring size: 57
Category
Early 2000s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Aquamarine, 18k Gold, White Gold
Colleen B. Rosenblat Topaz Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
This enormous cocktail ring is set in 18 carat rose gold with a 74,30 ct topaz. This ring is handmade and designed by Colleen B. Rosenblat.
Ring size: 59
Category
Early 2000s German Colleen B. Rosenblat Cocktail Rings
Materials
Topaz, 18k Gold, Rose Gold
Colleen B. Rosenblat tanzanite gold ring
By Colleen B. Rosenblat
Located in Hamburg, DE
The beautiful midnight-blue tanzanite 22.35 ct and 6.71 ct TW/if brilliant cut diamonds make this ring to an impressive eye catcher. Ring size: 56
Designed by Colleen B. Rosenblat
Category
1990s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Tanzanite, 18k Gold, White Gold
Colleen B. Rosenblat Morganite Sapphire Rose Gold Cocktail Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
This amazing cocktail ring, set in 18k rose gold, comes along with a huge morganite 31,35 ct and a pair of sapphires 2,00 ct on the sides.
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Morganite, Sapphire, 18k Gold, Rose Gold
Colleen B. Rosenblat Amethyst Rose Gold Cocktail Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
A timeless, glorious and high-class cocktail ring from the “Masterpieces” collection by Colleen B. Rosenblat. A amethyst of that size and colour is very rare.
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Amethyst, 18k Gold, Rose Gold
Colleen B. Rosenblat Brown Tourmaline Rose Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
This ring, set in 18 carat rose gold, captivates with a brown tourmaline 24,28 ct. It is designed by Colleen B. Rosenblat.
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Tourmaline, 18k Gold, Rose Gold
Colleen B. Rosenblat Keshi Pearl Diamond Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
The ring in 18k white gold, diamonds 1,59 ct. and a grey-pink keshi
pearl is definitley an eye - cather.
Category
2010s German Modern Colleen B. Rosenblat Cocktail Rings
Materials
Diamond, Pearl, 18k Gold, White Gold
Middle Ages Ring, 18 Karat White Gold, Tanzanite 12.05 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
Inspired by the elements and shapes of the Middle Ages, the collection is one of the most coveted by Colleen B. Rosenblat. Delicate yet bold crosses and stepped rings with large, col...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Tanzanite, 18k Gold, White Gold
Colleen B. Rosenblat Amethyst Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
A fascinating 26.26 ct amethyst is embedded in a 18kt rose gold setting and design by Colleen B. Rosenblat. This ring is an eye-catcher!
Ring size: 56
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Amethyst, 18k Gold, Rose Gold, Gold
Middle Ages Ring in 18 Carat White Gold with 1 Aquamarine 25.48 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
Ring in 18 Carat White Gold with 1 Aquamarine of 25.48 ct from the Middle Ages Collection.
Inspired by the elements and shapes of the Middle Ages, the collection is one of the most ...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Aquamarine, 18k Gold, White Gold
Hammered Gold Ring in 18 Carat Hammered White Gold, 1 Smoky Quartz 13.01 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
In the elegant hammered gold collection, Colleen B. Rosenblat creates a controversial interplay of shapes.
Through her bold treatment of high-carat gold and the combination of unusua...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Quartz, 18k Gold, White Gold
Cocktail Ring in 18 Carat White Gold, 1 Kunzite of 27.48 ct, 2 Sapphires 3.39 ct
By Colleen B. Rosenblat
Located in Hamburg, DE
A ring in 18k white gold with one kunzite 27.48 ct and two beautiful orange sapphires 3.39 ct.
Ring size: 58
Designed by Colleen B. Rosenblat.
Category
Early 2000s German Colleen B. Rosenblat Cocktail Rings
Materials
Kunzite, Sapphire, 18k Gold, White Gold
Hammered Gold Ring in 18 K Hammered White Gold, Zircon 9.60 Ct
By Colleen B. Rosenblat
Located in Hamburg, DE
Modern antiquity!
In the elegant hammered gold collection, Colleen B. Rosenblat creates a controversial interplay of shapes.
Through her bold treatment of high-carat gold and the c...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Zircon, White Gold
Colleen B. Rosenblat beryl gold ring
By Colleen B. Rosenblat
Located in Hamburg, DE
The beryl has 33.97 ct it sits exposed in the beautiful white gold setting. Designed by Colleen B. Rosenblat.
Ring size: 57
Category
Early 2000s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Beryl, 18k Gold, White Gold
Middle Ages 26.31 Carat Amethyst Cocktail Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
Middle ages ring 18 carat white gold with a wonferful amethyst 26.31 ct. Designed by Colleen B. Rosenblat. The ring size is EU 57 and US 8.
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Amethyst, 18k Gold, White Gold
Colleen B. Rosenblat Tourmaline Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
A glorious tourmaline-drop is set in this 18k white gold setting which is designed by Colleen B. Rosenblat.
Category
2010s German Colleen B. Rosenblat Cocktail Rings
Materials
Tourmaline, 18k Gold, White Gold
Precious Basics Ring 18 Carat White Gold 1 Madeira Citrine 9.17 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
Ring from the Precious Basics Collection in 18 Carat White Gold with 1 Madeira Citrine 9.17 ct
Size EU 57 (US 8)
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Citrine, 18k Gold, White Gold
Colleen B. Rosenblat Mandarin Garnet Pave Sapphire Blackened Gold Ring
By Colleen B. Rosenblat
Located in Hamburg, DE
This spectacular Cocktail ring, is set in 18k blackened white gold paved with 412 intense orange Sapphires 9.1 ct and a magnificiant mandarine garnet 26.0 ct in the front. It is desi...
Category
2010s German Art Deco Colleen B. Rosenblat Cocktail Rings
Materials
Garnet, Sapphire, 18k Gold, White Gold
Price Upon Request
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Previously Available Items
Scarab Ring, 18k White Gold, Rose Quartz and Tourmalines
By Colleen B. Rosenblat
Located in Hamburg, DE
The most popular and widely recognised collection by Colleen B. Rosenblat. Engraved with the characteristic scarab motif, these colourful gems have been considered as lucky charms si...
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Located in Hamburg, DE
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21st Century and Contemporary German Contemporary Colleen B. Rosenblat Cocktail Rings
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Tourmaline, 18k Gold, White Gold
Scarab Ring, 18K White Gold, Moonstone 17.34 Carat, Mandarin Garnets 0.80 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
The most popular and widely recognised collection by Colleen B. Rosenblat. Engraved with the characteristic scarab motif, these colourful gems have been considered as lucky charms si...
Category
21st Century and Contemporary German Egyptian Revival Colleen B. Rosenblat Cocktail Rings
Materials
Garnet, Moonstone, 18k Gold, White Gold
Cocktail Ring, 18 Karat Rose Gold, Morganite 20.33 Carat, Diamonds 0.90 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
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18 Carat Rose Gold
1 Morganite 20.33 ct
86 Cognac Coloured Diamonds 0.90 ct
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Scarab Ring, 18 Karat White Gold, 1 Onyx 22.40 Carat 2 Diamonds 0.49 Carat tw/si
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Located in Hamburg, DE
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2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Diamond, Onyx, 18k Gold, White Gold
Scarab Ring in 18 Carat White Gold Set with 91 Diamonds 0.88 Carat Tw/Si
By Colleen B. Rosenblat
Located in Hamburg, DE
The most popular and widely recognised collection by Colleen B. Rosenblat. Engraved with the characteristic scarab motif, these colourful gems have been considered as lucky charms si...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
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Diamond, 18k Gold, White Gold
Scarab Ring in 18 Carat Yellow Gold, Turquoise 20.67 Carat, Sapphires 0.61 Carat
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Located in Hamburg, DE
The most popular and widely recognised collection by Colleen B. Rosenblat. Engraved with the characteristic scarab motif, these colourful gems have been considered as lucky charms si...
Category
2010s German Egyptian Revival Colleen B. Rosenblat Cocktail Rings
Materials
Sapphire, Turquoise, 18k Gold, Yellow Gold
Scarab Ring, 18 Karat Yellow Gold, Tiger's Eye 19.81 Carat, Emeralds 0.30 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
The most popular and widely recognised collection by Colleen B. Rosenblat. Engraved with the characteristic scarab motif, these colourful gems have been considered as lucky charms si...
Category
2010s German Contemporary Colleen B. Rosenblat Cocktail Rings
Materials
Emerald, Tiger's Eye, 18k Gold, Yellow Gold
Colleen B. Rosenblat cocktail rings for sale on 1stDibs.
Find a range of Colleen B. Rosenblat cocktail rings available on 1stDibs. Each of these unique items was designed with extraordinary care, often using gold. While looking for the most stylish antique or vintage Colleen B. Rosenblat jewelry to pair with your ensemble, you’ll find that Colleen B. Rosenblat amethyst cocktail rings, from our inventory of 5, can add a particularly distinctive touch to your look. We have 28 pieces in this collection as well as a number of other designs by this jeweler. While this collection reflects work that originated over various time periods, most of these items were designed during the 21st century and contemporary. If you’re looking for additional options, many customers also consider cocktail rings by Victor Mayer, Thomas Leyser, and Polya Medvedeva Jewellery. Prices for Colleen B. Rosenblat cocktail rings can differ depending upon gemstone, time period and other attributes. On 1stDibs, the price for these items starts at $5,215 and tops out at $76,725, while pieces like these, on average, can sell for $18,048.