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.
Colleen B. Rosenblat Amber Gold Necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
stunning and impressive handmade amber necklace in 22k yellow gold from the “one of a kind” collection by Colleen B. Rosenblat. This necklace is 55 cm long and between 4.5 cm and 5.6...
Amber, 22k Gold, Yellow Gold
Colleen B. Rosenblat Chrysoprase Necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
This chrysophrase necklace brings the spring into your life. The clasp is set in 18 K white gold. It is designed by Colleen B. Rosenblat.
Chrysophrase, 18k Gold, White Gold
$116,388
Mabe Pearls Gold Necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
Beautiful beaded 22k gold necklace with 19 Marbé pearls. Looks classic and elegant around every neck. Designed by Collenn B. Rosenblat.
Pearl, 22k Gold, Gold, Yellow Gold
Colleen B. Rosenblat Tourmaline Rubellite Aquamarine Gold Scarab Collier
By Colleen B. Rosenblat
Located in Hamburg, DE
This colorful collier with scarab pendants in 18k white gold with big cabochons as tourmalines, rubellites and aquamarines stands in the old Egypt for a lucky charm with the traditio...
Aquamarine, Rubelite, Tourmaline, 18k Gold, White Gold
Colleen B. Rosenblat turquoise coral gold necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
Double breasted turquoise necklace with a breathtaking coral clasp in 22k yellow gold. The clasp has the following dimensions: 75.5 mm length and 47.5 mm wide Designed by Coll...
Coral, Turquoise, 22k Gold, Yellow Gold
63.04 Carat Aquamarine Gold Necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
This marvelous aquamarine 63.04 ct adorns this 18k white gold necklace which is 51.5 cm long. The pendant is 4.2 cm long and 2.8 cm wide. This aquamarine has a very special mirror cu...
Aquamarine, 18k Gold, White Gold
Colleen B. Rosenblat South Sea Baroque Pearl Gold Necklace with Gold Clasp
By Colleen B. Rosenblat
Located in Hamburg, DE
Everyone should have one pearl necklace in his jewelry box, especially when it comes along with noble shiny southsea baroque pearls with a 22k yellow gold clasp topped off with Colle...
South Sea Pearl, 22k Gold, Yellow Gold, Gold
Certified 48.66 Carat Aquamarine White Gold Collier
By Colleen B. Rosenblat
Located in Hamburg, DE
An extraordinary aquamarine 48.66 ct wonderful placed in this beautiful center of a 18 Karat white gold linking chain necklace. An impressive contemporary piece of jewellery that rea...
Aquamarine, 18k Gold, White Gold
$260Sale Price|77% Off
REAL Large Natural Round Black Wood Rondels & Coral & Turquoise Necklace
By Aria Jewelry Design
Located in Raleigh, NC
This VERY Large 18 1/2 inches long necklace is very dramatic. The artistic black Wood rondels are different sizes but approximately 23mm x 24mm. The highly polished natural real red round Coral are approximately 23mm. The little lovely blue Turquoise spacers...
Coral, Turquoise
5.50 Carat Aquamarine Diamond White Gold Pendant Necklace
Located in Stamford, CT
1960's Aqua and diamond halo pendant necklace. 5.50ct natural untreated oval aqua surrounded by 18 round brilliant cut accent diamonds in 14k white gold. 18 inch chain. 1 oval cut ...
Aquamarine, Diamond, Gold, 14k Gold, White Gold
Aquamarine Necklace Pearl Amethyst 16" Gold Filled
By J DAUPHIN
Located in Los Angeles, CA
Aquamarine, Amethyst & Pearl Beaded Choker Necklace – Pastel Multi-Stone Jewelry by J Dauphin A luminous beaded choker by J Dauphin, combining aquamarine, amethyst, and white pe...
Amethyst, Aquamarine, Labradorite, Pearl, Gold Plate, Gold-filled
$269Sale Price|81% Off
Real Natural Dramatic Blue Turquoise & Natural Red Copies of Coral Necklace
By Aria Jewelry Design
Located in Raleigh, NC
This 18 1/2 inch long necklace is very large and makes a big statement ! The center largest Turquoise is 50mm x 38mm. The larger round natural Coral are approximately 24mm round. ...
Coral, Turquoise
$560Sale Price|56% Off
Beautiful Polished Chunky Dramatic Real Turquoise & Red Coral Necklace
By Aria Jewelry Design
Located in Raleigh, NC
This fascinating lovely huge necklace is 20 1/2 inches long. It is enhanced with natural red Coral. The largest Turquoise is approximately 30mm x 24mm ...
Coral, Turquoise, Gold Plate
Ambrosi Floral Earrings 18K Gold Carved Pink Tourmaline Aquamarine & Diamonds
By Ambrosi
Located in Old Tappan, NJ
Italian Ambrosi vintage pre-owned 18K white and yellow gold earrings with carved aquamarine and pink tourmaline, as well as round diamonds in the centers. One of the earrings is a h...
Aquamarine, Diamond, Tourmaline, 18k Gold, White Gold, Yellow Gold
Syna Yellow Gold Chrysoprase Pendant with Diamonds
By Syna Jewels
Located in Fort Lee, NJ
Created in 18kyg Chrysoprase 25 carats approx. Diamonds 0.35 carat approx. Chain sold separately Limited edition Crafted with 18 karat yellow gold, this limited edition, Chrysopras...
Diamond, Chrysophrase, 18k Gold, Yellow Gold
7 Pearl Chain Necklace 18K Yellow Gold
Located in Honolulu, HI
Item Specifications: Necklace Metal: 18k Yellow Gold Total Weight: 4.3 Grams Necklace Length: 16" Pearl Type: Akoya Pearls Pearl Bead Diameter : 6 mm Stamped: "K18" Conditi...
Pearl, Yellow Gold, 18k Gold
$556Sale Price|88% Off
Blush Button and Mabe Pearl Necklace with Sterling Link Clasp
Located in Mount Kisco, NY
Soft lustrous pink hues with featured white mabe pearl sterling stations create this very pretty 16 inch hand-strung necklace. The strand has thirty 8-1/2 mm blush button pearls whic...
Pearl, Sterling Silver
Georges Lenfant 18 Karat Yellow Gold, Chrysoprase & Coral Necklace
By Georges L'Enfant
Located in Brisbane City, QLD
When it comes to French jewellery there is one name which is exceedingly hot at the moment in the estate jewellery world, Georges Lenfant. This 18 karat yellow gold, chrysoprase and ...
Chrysophrase, Coral, Gold, 18k Gold, Yellow Gold
22 Karat Gold Flower Motif Dangling Disc Necklace
Located in New York, NY
Flower motif deco link necklace 22Kt Yellow Gold Weight: 10 Grams 10mm larger disc 7mm smaller disc 17 inches length. Comfortable clasp
22k Gold, Yellow Gold
$326Sale Price|74% Off
Highly Polished Natural Real Coral & Real Turquoise Elegant Necklace
By Aria Jewelry Design
Located in Raleigh, NC
This beautiful single strand of highly polished natural Turquoise and real natural red Coral is 21 inches long. The simple elegant spacers are silvery rondels (12mm). The largest C...
Coral, Turquoise
Scarab Pendant, 18 K Rose Gold, Tourmaline 16.76 Ct
By Colleen B. Rosenblat
Located in Hamburg, DE
Scarab pendant with tourmaline, engraved by hand in Germany and set in 18 K rose gold. The seductive nature of these pieces delights the sense of touch, too.
Tourmaline, 18k Gold, Rose Gold
Sold
H 0.23 in W 1.44 in L 2.28 in
Middle Ages Pendant Crux, 18 Karat White Gold, 6 Sapphires 18.49 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...
Sapphire, 18k Gold, White Gold
Scarab Pendant, 18 Karat Rose Gold, 1 Cacholong 15.90 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...
Opal, 18k Gold, Rose Gold
Precious Basics Necklace 18 Carat Gold African Paraiba Tourmalines 282 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
Beautiful chain necklace out of african paraiba tourmalines with 282 ct and the clasp out of 18 ct whit gold.
Tourmaline, 18k Gold, White Gold
Scarab Pendant in 18 Karat White Gold, 1 Onyx 16.23 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
Scarab pendant in 18 carat white gold with onyx of 16.23 ct, carefully engraved by hand into the shape of a scarab. The ancient Egyptian lucky charm is a symbol of birth, regeneratio...
Onyx, 18k Gold, White Gold
Sold
W 0.41 in D 0.38 in L 41.34 in
Precious Basics Necklace in 18 Karat Rose Gold, Mandarin Garnets and Rubelites
By Colleen B. Rosenblat
Located in Hamburg, DE
The classic collection for everyday basic and business looks. Elegantly shaped band rings set with unique, coloured gemstones join sophisticated chains and bracelets, whilst the earr...
Garnet, Rubelite, Tourmaline, Rose Gold
Sold
H 7.09 in L 19.69 in
Necklace in 18 KT White Gold and Sterling Silver with Lapis Lazuli and Amethysts
By Colleen B. Rosenblat
Located in Hamburg, DE
Necklace in 18 Carat White Gold and Hammered Sterling Silver Blackened with Lapis Lazuli and Amethysts
Amethyst, Lapis Lazuli, 18k Gold, White Gold, Sterling Silver
Sold
H 0.4 in W 0.75 in L 1.23 in
Scarab Pendant 18 Carat White and Rose Gold 89, Cognac Colored Diamonds 0.48 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...
Diamond, Brown Diamond, 18k Gold, Rose Gold, White Gold
Scarab Pendant in 18 Carat Rose Gold with Amethyst 9.07 Carat
By Colleen B. Rosenblat
Located in Hamburg, DE
Scarab pendant in 18 carat rose gold with amethyst of 9.07 ct, carefully engraved by hand into the shape of a scarab. The ancient Egyptian lucky charm is a symbol of birth, regenerat...
Amethyst, 18k Gold, Rose Gold
Certified 66.95 Carat Tourmaline Scarab Pendant
By Colleen B. Rosenblat
Located in Hamburg, DE
In old Egypt the scarab was a symbol for resurrection and life and since that time a lucky charm for everyone. This beautiful 18k rose gold scarab pendant with a large tourmaline 66....
Tourmaline, 18k Gold, Rose Gold
Five Rows Freshwater Pearl Necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
This modern five rows freshwater pearl necklace looks classically elegant around all necks. Creator is Colleen B. Rosenblat.
Pearl, 18k Gold, Rose Gold
Amethyst Hammered Gold Multi Strand Necklace
By Colleen B. Rosenblat
Located in Hamburg, DE
This elegant three row necklace is made of 22 carat hammered golden and amethyst bullets and an eyecatcher of the hammered gold claps. The statement ne...
Amethyst, 22k Gold