Items Similar to Leitão
Irmão Mid-Century Emerald Diamond Cocktail Ring Platinum 1950s-1960s
Want more images or videos?
Request additional images or videos from the seller
1 of 12
Leitão
Irmão Mid-Century Emerald Diamond Cocktail Ring Platinum 1950s-1960s
$21,141.99
£15,648.54
€17,600
CA$28,934.40
A$31,506.80
CHF 16,668.77
MX$379,960.10
NOK 212,083.73
SEK 193,889.15
DKK 134,072.97
About the Item
Leitão
Irmão Mid-Century Emerald and Diamond Platinum Cocktail Ring, Portugal, 1950s–1960s, in Original Case.
A striking mid-century cocktail ring by Leitão
Irmão, the historic Portuguese jeweller to the Royal House, masterfully blending vivid emeralds with a scintillating diamond ensemble.
The design centres on a round brilliant-cut diamond with approximately 1.20 carats, framed by a pair of square emerald-cut emeralds of deep, saturated green, weighing an estimated 2.00 carats in total. The trio is encircled by a dynamic halo of twenty marquise brilliant-cut diamonds, together weighing around 2.40 carats, their precise arrangement radiating brilliance from every angle.
Exquisitely crafted in platinum and bearing the Lisbon hallmark (1938–1984) for platinum 500, as well as the maker’s mark for Leitão
Irmão, this jewel embodies the refined glamour of the 1950s–60s era — a time when bold form met impeccable craftsmanship.
Presented in its original red leather fitted case, stamped “Leitão
Irmão, Antigos Joalheiros da Coroa, Lisboa”, this piece is a rare survivor of Portugal’s mid-century haute joaillerie.
Details
• Maker’s mark for LEITÃO
IRMÃO; Lisbon hallmark (used 1938-1984) for platinum 500
• In original fitted case
• Origin: Lisbon, Portugal, circa 1950s—1960s
• Emeralds: 2 squared emerald-cut; estimated 2ct total
• Central Diamond: Round brilliant-cut; estimated 1.20ct
• Surrounding Diamonds: 20 marquise brilliant-cut; estimated 2.40ct total
• Finger size: EU 53 (resizable)
• Weight: 10.3g
•••
NOTES
All items are presented in very good condition, with surface wear and age-related marks consistent with their antique or vintage nature. All jewels—whether signed or unsigned—are offered as worn, reflecting their history and authenticity. Unless otherwise specified, all weights, assessments, and attributions are based on standard gemmological practices and mounting allowances. Variations may occur when cross-referenced with third-party valuations. Colors may differ slightly between screen and natural lighting. Gemmological reports and certificates are referenced where available. For further clarification, our team of GIA Graduate Gemologists and certified appraisers would be happy to assist.
ABOUT US
Established in 1985, we are a trusted specialist in fine antique jewelry, collectible timepieces, and rare objets d’art, with three physical locations and a growing international clientele. Each piece may be accompanied upon request by a Certificate of Authenticity or Insurance Valuation, issued by certified jewelry experts, GIA-trained gemologists, and registered valuers—ideal for provenance, collection documentation, and insurance purposes.
AFFILLIATIONS
• Watch Trader Association (WTA)
• Gemological Institute of America (GIA) Alumni
• APAOINCM – Portuguese Association of Official Appraisers in Jewelry
Goldsmithing
• APA – Portuguese Antique Dealers Association
• CINOA – International Confederation of Art and Antique Dealer Associations
• Featured in Forbes 30 Under 30
- Creator:Leitão Irmão
- Ring Size:6.5 US, Resizable
- Metal:
- Stone:
- Stone Cut:
- Weight:10.3 g
- Style:
- Place of Origin:
- Period:
- Date of Manufacture:1950s-1960s
- Condition:Wear consistent with age and use.
- Seller Location:Lisbon, PT
- Reference Number:Seller: 627/24E1stDibs: LU2150227678862
Resizing is available.
About the Seller
5.0
Recognized Seller
These prestigious sellers are industry leaders and represent the highest echelon for item quality and design.
Established in 1985
1stDibs seller since 2020
28 sales on 1stDibs
Typical response time: <1 hour
- ShippingRetrieving quote...Shipping from: Lisbon, Portugal
- Return Policy
More From This Seller
View AllArt Deco Style Colombian Emerald Diamond Target Cocktail Ring Platinum, 1990s
Located in Lisbon, PT
Vintage Colombian Emerald, Diamond and Onyx Bypass Cocktail Ring in Platinum, 1990s. This jewel of Art Deco inspiration features a vivid green Colombian emerald and a Transitional ro...
Category
1990s Unknown Art Deco Cocktail Rings
Materials
Diamond, Emerald, Platinum
20th Century 1.80ct Diamond Emerald Target Engagement Cocktail Ring White Gold
Located in Lisbon, PT
A 20th Century Diamond and Emerald Target Cocktail Ring. This spectacular ring designed in a style which is iconically Art Deco features a Transitional ...
Category
Vintage 1930s Portuguese Art Deco Engagement Rings
Materials
Diamond, Emerald, Gold, 18k Gold, White Gold
Art Deco Emerald Diamond Engagement Ring Platinum Portuguese 1940s/1950s
Located in Lisbon, PT
Art Deco Emerald and Diamond Engagement Ring in Platinum, by Portuguese goldsmith Carlos Joaquim Xavier, 1940s/1950s. This jewel features a vibrant green circular emerald weighing ap...
Category
Early 20th Century Portuguese Art Deco Engagement Rings
Materials
Diamond, Emerald, Platinum
Mid-Century Emerald Diamond Three Stone Ring Platinum Portuguese 1950s-1960s
Located in Lisbon, PT
Mid-Century Emerald and Diamond Three-Stone Ring in Platinum, Portuguese, circa 1950s–1960s.
Crafted in mid-20th century Lisbon, this jewel is centered on a captivating old mine-cut...
Category
Mid-20th Century Portuguese Modern Three-Stone Rings
Materials
Diamond, Emerald, Platinum
Mid-Century Aquamarine Diamond Cocktail Ring White Gold 1950s–1960s
Located in Lisbon, PT
Mid-Century Aquamarine and Diamond Cocktail Ring in White Gold, Circa 1950s–1960s.
At its heart lies a mesmerizing emerald-cut aquamarine of approximately 5.30 carats—its crystallin...
Category
Mid-20th Century Modern Cocktail Rings
Materials
Aquamarine, Diamond, White Gold
Leitão
Irmão Late Art Deco Diamond Emerald Giardinetto Brooch Gold, 1940s
Located in Lisbon, PT
Art Deco Leitão & Irmão Diamond, Emerald and Enamel Giardinetto Floral Brooch in Silver and Gold, Portugal, c. 1940, in original case, with a total gem weight of approximately 7.84ct...
Category
Vintage 1940s Portuguese Art Deco Brooches
Materials
Diamond, Emerald, Gold, 18k Gold, Rose Gold, Yellow Gold, Silver, Sterli...
You May Also Like
Colombian emerald and diamond cocktail ring, circa 1950
Located in London, GB
Colombian emerald and diamond cocktail ring. Set to centre with an octagonal emerald-cut natural Colombian emerald with minor clarity enha...
Category
Antique 1850s Cocktail Rings
Materials
Diamond, Emerald, Platinum
1950s 1 Carat Total Diamond and Emerald Platinum Cocktail Ring
Located in Hicksville, NY
Item Details:
Metal Type: Platinum
Weight: 8.4 grams
Ring Size: 8.5 (resizable)
Emerald Details:
Carat: .50 Carat
Diamond Details:
Cut: Round (center and accent) + Baguettes (accent)
Carat: 1 Carat Total
Color: L
Clarity: VS
1950s Platinum Crafted Emerald and Diamond Cocktail Ring Featuring 1 carat total of diamonds - a mix of round center diamond, round cut accent diamonds and accent baguette cut diamonds. The emerald gemstones are the perfect addition to this already stunning cocktail ring. The side profile is beautifully crafted with symmetry and a retro vintage design...
Category
Vintage 1950s Unknown Retro Cocktail Rings
Materials
Diamond, Emerald, Platinum
Mid-Century Russian Emerald Diamond Platinum Cocktail Ring, GIA Certified
Located in Beverly Hills, CA
A unique and special ring featuring a large and impressive emerald weighing approximately 40 carats. The emerald is certified by the GIA as natural with a Russian origin, and it has ...
Category
21st Century and Contemporary American Cocktail Rings
Materials
Diamond, Emerald, Platinum
Circa 1950
s Emerald and Diamond Ring Set in Platinum
Located in New York, NY
Beautiful emerald and diamond ring with a unique vintage design. Approximately 4.5 carats of round emeralds and .75 carats of round brilliant diamonds set in platinum
Size 6.5
Category
Vintage 1950s Unknown Cocktail Rings
Materials
Diamond, Emerald, Platinum
Platinum Emerald
Diamond Cocktail Ring 2.40 Carats
Located in Beverly Hills, CA
Platinun Emerald & Diamond Ring 2.40Cts
This emerald & diamond brilliance is absolutely breathtaking. The fire radiating from this ring captivates your eyes and heart all at once, i...
Category
Vintage 1960s Cocktail Rings
Materials
Diamond, Emerald, Platinum
Vintage 1950s 8.11 Carat Emerald Ring with Diamonds
Located in New York, NY
Finely crafted in platinum and 18k yellow gold with an AGL certified Zambian Emerald weighing 8.11 carats, and Marquise, Round Brilliant, and Pear-Shaped Diamonds weighing approximat...
Category
Vintage 1950s Cocktail Rings
Materials
Diamond, Emerald, 18k Gold, Platinum
