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.
GIA Certified 3.58ct Cushion Cut Blue Sapphire Sri Lanka, Loose Gemstone
By Simon Ardem
Located in New York, NY
This GIA certified natural cushion cut sapphire has a glowing, radiant blue color. Originating in Sri Lanka, the stone's bright color speaks for itself. The cushion cut has a slightl...
Sapphire, Blue Sapphire
$3,500 / item
Spessartite 4.65ct Oval Sugarloaf Cabochon - Loose
By Simon Ardem
Located in New York, NY
A part of the garnet family, this gorgeous natural sunset orange spesertite stone is a whopping 4.65ct. It is cut into an oval cabochon "sugarloaf" (having a soft long peak in the ce...
Garnet, Mandarin Garnet
$2,999
H 0.6 in W 0.44 in L 0.83 in
Gem Quality Amethyst Sugarloaf Cabochon Layout Loose Gemstone for Jewelry
Located in Jaipur, RJ
Weight: 586.90 Carats Size: 21x15x12 To 15x11x11 MM Pieces: 26 Drilled: No
Amethyst
$1,650Sale Price|40% Off
W 0.63 in D 0.53 in L 0.71 in
Neon Bluish Green Natural Tourmaline Sugarloaf Cabochon Loose Gemstone 35.60 Ct
Located in Peshawar, PK
Vivid Neon Bluish Green Natural Tourmaline Sugarloaf Cabochon Loose Gemstone from Kunar, Afghanistan!! 💎 GEMSTONE TYPE: Tourmaline ⚖️ WEIGHT: 35.60 Carats 🪚 SHAPE & CUT: Sugarlo...
Tourmaline
New Sugarloaf Cabochon Jade Loose Gemstone, Designer Unknown, 2026
Located in Kowloon, HK
This 10.15ct Natural Type-A Myanmar Jadeite isn’t just a gemstone; it’s a fragment of the "highest etheric spectrum." Featuring a rare, architectural Sugarloaf Cut, this stone glows ...
Jade
$14,900
W 9.8 in L 15.8 in
9.01 ct Mandarin Spessartite Garnet Pear Cut Loose Gemstone – Merkaba Jewelry
By Merkaba
Located in Beverly Hills, CA
9.01 ct Mandarin Spessartite garnet, pear cut (15.8 x 9.8 mm), offered loose for custom jewelry by Merkaba Jewelry Beverly Hills. This vivid, joyful orange Spessartite (Mandarin ga...
Garnet, Mandarin Garnet, 18k Gold, Rose Gold, White Gold, Yellow Gold, P...
$675Sale Price|25% Off
H 0.38 in W 0.29 in D 0.19 in
2.85 Carat Natural Loose Cornflower Blue Sapphire Oval Cut Sri Lankan Gemstone
Located in Bangkok, TH
Weight 2.85 carat Dimensions 9.4x7.2x4.8mm Treatment Heated Origin Sri Lankan Clarity SI Shape Cut Oval AG253 This magnificent 2.85-carat natural cornflower blue sapphire ca...
Blue Sapphire
$496Sale Price|20% Off
D 0.24 in Dm 0.28 in
1.65 Carat Natural Loose Blue Sapphire Stone Oval Cut Sri Lankan Gemstone
Located in Bangkok, TH
Weight 1.65 carat Dimensions 6.9x5.9x4.4mm Treatment None Origin Sri Lankan Clarity SI Shape Cut Oval AG112 Discover the elegance of this 1.65 Carat Natural Loose Blue Sapphi...
Blue Sapphire
$6,640Sale Price|20% Off
W 0.31 in D 0.3 in L 0.47 in
6.40 Carat Natural Loose Certified Blue Sapphire Oval Cut Sri Lankan Gemstone
Located in Bangkok, TH
Weight 6.40 carats Dimensions 11.71 x 8.45 x 7.45 mm Treatment None Origin Sri Lanka Clarity VVS Shape Cut Oval This stunning 6.40 carat Natural Blue Sapphire features a rich blu...
Blue Sapphire
$424Sale Price|20% Off
W 0.22 in D 0.17 in L 0.31 in
1.60 Carat Natural Loose Blue Sapphire Stone Oval Cut Sri Lankan Gemstone
Located in Bangkok, TH
Weight 1.60 carat Dimensions 7.7x5.4x4.3mm Treatment None Origin Sri Lankan Clarity SI Shape Cut Oval This 1.60 carat Blue Sapphire presents a beautifully saturated blue hue...
Blue Sapphire
$5,440Sale Price|20% Off
W 0.31 in D 0.22 in L 0.36 in
3.55 Carat Natural Loose Royal Blue Sapphire Cushion Cut Sri Lankan Gemstone
Located in Bangkok, TH
Weight 3.55 carat Dimensions 9.0x7.8x5.5mm Treatment Heated Origin Sri Lankan Clarity SI Shape Cut Cushion This 3.55 Carat Natural Loose Royal Blue Sapphire Stone is a gems...
Blue Sapphire
$192Sale Price|20% Off
5.75 Carat Natural Loose Dual Madeira Citrine Pairs Sugarloaf Cabochon
Located in Peshawar, PK
Loose Madeira Citrine Sugarloaf Cabochon Weight: 5.75 Carats Dimension: 8.8 x 8.8 x 6.2 Mm 8.9 x 8.9 x 6.1 Mm Colour: Orange Shape: Round Certificate: On Demand...
Citrine
Unavailable|$256
W 0.34 in D 0.33 in L 0.38 in
5.65 Carats Natural Loose Sugarloaf Cabochon Indicolite Tourmaline Gem For Ring
Located in Peshawar, PK
Indicolite Tourmaline Sugarloaf Cabochon Weight: 5.65 Carats Dimension: 9.4 x 8.4 x 8.3 Mm Colour: Blue Origin: Afghanistan Treatment: Non Certificate: On Demand Indicolite t...
Indicolite
14.72ct Star Sapphire Gemstone - Oval Cabochon Cut Loose Solitaire
Located in Greensboro, NC
Shape/Cut: Oval Cabochon Color: Blue Dimensions (mm): 14.15 x 11.91 Weight: 14.72ct Treatment: Heating Please check out the enlarged pictures. Thank you for taking the time to r...
Star Sapphire