For over two decades, Simon Ardem has provided its clientele with fashionable fine jewelry. Every piece is crafted to fit the sensibilities of the customer, resulting in contemporary jewelry with captivating and uncommon qualities.
Gemologist and artist Ardem Aslanian established Simon Ardem in 1996 with his wife Cynthia. Ardem previously worked with his brother in the diamond trading business and has more than 30 years of experience creating bridal and custom jewelry. Cynthia has a fine arts degree from the Fashion Institute of Technology (FIT) in Manhattan and sketches the company’s concepts.
Their combined expertise and vision have launched Simon Ardem to prominence in the New York jewelry industry. The company is known for its meticulous bridal rings, pendants and bangles made with a signature imagination, artistry and care.
Ardem and Cynthia diligently work to ensure that every component of their company’s jewelry is sourced and produced ethically. Striving to be a sustainable company, Simon Ardem utilizes the most environmentally sound manufacturing processes and invests in local economies.
Simon Ardem continues to operate out of New York City, always working to meet the highest standards in its products and production methods.
On 1stDibs, discover the lavish quality of Simon Ardem rings, bracelets, necklaces and more.
1.25 Carat Brilliant Round Diamond Chain Necklace
By Simon Ardem
Located in New York, NY
Five round diamonds set in Platinum baskets on 18K Yellow gold chain. Round Brilliant diamonds are F-G VS2-SI1. Total carat weight = 1.25ct. Total weight 3.25 grams. Length is 16". C...
Diamond, 18k Gold
1 Carat Round Diamond by Yard Necklace Set in 14 Karat Yellow Gold
By Simon Ardem
Located in New York, NY
Round cut diamond necklace with 5 bezel set round diamonds set in 14K Yellow gold. Round Brilliant diamonds are F-G VS2-SI1 . Total Carat weight = .80ct. Total weight 1.8 grams. Leng...
Diamond, Yellow Gold
1 Carat Round Diamond by Yard Necklace Set in 14 Karat Yellow Gold
By Simon Ardem
Located in New York, NY
Round cut diamond necklace with 5 bezel set round diamonds set in 14K Yellow gold. Round Brilliant diamonds are F-G VS2-SI1 . Total Carat weight = .80ct. Total weight 1.8 grams. Leng...
Diamond, Yellow Gold
6.50 Carat Diamond Tennis Necklace in 18 Karat Yellow Gold Bezel Setting
By Simon Ardem
Located in New York, NY
Diamond Tennis Necklace in 18K Yellow Gold. Bezel set natural brilliant round diamonds are F-G VS2-SI1. Total carat weight = 6.50ct. The length: 17" inches. Total weight: approximate...
Diamond, Yellow Gold
9.2 Carat Brilliant Round Graduating Diamond Tennis Necklace in 14K White Gold
By Simon Ardem
Located in New York, NY
Graduating Diamond Tennis necklace in 14K white gold. Natural brilliant round diamonds are F-G-H VS1-SI2, ranging from 2 to 5 mm, in three prongs style setting. Total carat weight: 9...
Diamond, White Diamond, 14k Gold, White Gold
2.50 Carat Pear Shape Diamond Necklace in 18 Karat White Gold
By Simon Ardem
Located in New York, NY
2.50 carat Pear shape diamond necklace with 5 bezel set diamonds set in Platinum. Pear Shape diamond center stone is D SI1. Brilliant diamonds are D-E SI1. Total Carat weight: 3.80...
Diamond, Platinum
14K Yellow Gold 0.79 Carat Diamond Station Necklace
Located in Great neck, NY
A beautiful and classic 14k Gold and Diamond Station Necklace featuring 7 drops of a bed of diamonds in a teardrop shape approximately 0.79ct of round sparkling Diamonds. Chain measu...
Diamond, Yellow Gold
13 Carat Graduated Diamond Necklace
By Belfiore Jewelry
Located in Great Neck, NY
This stunning graduated necklace is manufactured in Italy, it consists of sections of graduated stones. Set in 14K white gold, with excellent-cut round diamonds. The color of the sto...
Diamond, 14k Gold
12 Carat Riviera Diamond Necklace
By Belfiore Jewelry
Located in Great Neck, NY
Graduated 3 prong diamond necklace set in 14K white gold. The center stone weighs 0.75 carats. The total carat weight of the necklace is 12.08...
Diamond, 14k Gold
Necklace with brilliant cut diamonds up to 1.00ct 14k gold 5.1 grams
Located in The Hague, ZH
14k white gold necklace with brilliant-cut diamond total approx. 1.00ct – F/G – VS/SI – 50 cm long Detailed description the length of the necklace is 50 cm by 0.7 mm wide the dime...
Diamond, 14k Gold
.75ctw Yellow Gold Diamonds-by-the-Yard Necklace
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers ...
Diamond, White Diamond, 14k Gold, Yellow Gold
1.00CTW Yellow Gold Diamonds-By-The-Yard Necklace
Located in Chicago, IL
This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers across the country. As the founder shifts focus to new ventures, he’s releasing a final selection of investment-grade gemstone and diamond pieces—offered exclusively to 1stDibs buyers at exceptional, below-market prices. This is not a liquidation or sale—it’s a one-time opportunity to acquire legacy-level jewelry at true insider value. Each piece is final; once sold, it will not be restocked. A gorgeous diamond necklace...
Diamond, White Diamond, 14k Gold, Yellow Gold
