Skip to main content
Items Similar to Leitão & Irmão Mid-Century Emerald Diamond Cocktail Ring Platinum 1950s-1960s
Art Déco 2.01ct Colombian Emerald & Diamond Platinum Ring, 1930s
Art Déco 2.01ct Colombian Emerald & Diamond Platinum Ring, 1930s
Circa 1950's Emerald and Diamond Ring Set in Platinum
Circa 1950's Emerald and Diamond Ring Set in Platinum
COCKTAIL RING 1960s 14K White Gold 3.35 CTW Diamond & 2.00 Ct Emerald.
COCKTAIL RING 1960s 14K White Gold 3.35 CTW Diamond & 2.00 Ct Emerald.
Vintage Art Deco Era Emerald & Diamond Cocktail Ring
Vintage Art Deco Era Emerald & Diamond Cocktail Ring
Mid-Century Emerald Diamond Three Stone Ring Platinum Portuguese 1950s-1960s
Mid-Century Emerald Diamond Three Stone Ring Platinum Portuguese 1950s-1960s
Vintage White Gold Ring with 4ct Colombian Emerald and Diamonds, Circa 1960s–70s
Vintage White Gold Ring with 4ct Colombian Emerald and Diamonds, Circa 1960s–70s
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

$20,940.38
£15,355.60
€17,600VAT Included
CA$29,021.90
A$29,156.26
CHF 16,817.60
MX$354,817.02
NOK 195,359.79
SEK 198,171.39
DKK 134,201.67

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:
    Platinum
  • Stone:
    Diamond,Emerald
  • Stone Cut:
    Emerald Cut
  • Weight:
    10.3 g
  • Style:
    Modern
  • Place of Origin:
    Portugal
  • Period:
    Mid-20th Century
  • Date of Manufacture:
    1950s-1960s
  • Condition:
    Wear consistent with age and use.
  • Seller Location:
    Lisbon, PT
  • Reference Number:
    Seller: 627/24E1stDibs: LU2150227678862

More From This Seller

View All
Mid-Century Emerald Diamond Three Stone Ring Platinum Portuguese 1950s-1960s

Mid-Century Emerald Diamond Three Stone Ring Platinum Portuguese 1950s-1960s

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

Art Deco Style Colombian Emerald Diamond Target Cocktail Ring Platinum, 1990s

Art Deco Style Colombian Emerald Diamond Target Cocktail Ring Platinum, 1990s

Art 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

Art Deco Emerald Diamond Engagement Ring Platinum Portuguese 1940s/1950s

Art Deco Emerald Diamond Engagement Ring Platinum Portuguese 1940s/1950s

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

20th Century 1.80ct Diamond Emerald Target Engagement Cocktail Ring White Gold

20th Century 1.80ct Diamond Emerald Target Engagement Cocktail Ring White Gold

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

Mid-Century Aquamarine Diamond Cocktail Ring White Gold 1950s–1960s

Mid-Century Aquamarine Diamond Cocktail Ring White Gold 1950s–1960s

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

Mid-Century Diamond Ballerina Cocktail Ring in Platinum 1950s-1960s

Mid-Century Diamond Ballerina Cocktail Ring in Platinum 1950s-1960s

Mid-Century Diamond Ballerina Cocktail Ring in Platinum 1950s-1960s

Located in Lisbon, PT

Mid-Century Diamond Ballerina Cocktail Ring in Platinum, by master jeweler Claudino de Oliveira, 1950s–1960s. An extraordinary expression of Mid-Century theatricality, this sculptura...

Category

Mid-20th Century Portuguese Modern Cocktail Rings

Materials

Diamond, Platinum

You May Also Like

Colombian emerald and diamond cocktail ring, circa 1950

Colombian emerald and diamond cocktail ring, circa 1950

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

Circa 1950's Emerald and Diamond Ring Set in Platinum

Circa 1950's Emerald and Diamond Ring Set in 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

Mid-Century Russian Emerald Diamond Platinum Cocktail Ring, GIA Certified

Mid-Century Russian Emerald Diamond Platinum Cocktail Ring, GIA Certified

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

Art Déco 2.01ct Colombian Emerald & Diamond Platinum Ring, 1930s

Art Déco 2.01ct Colombian Emerald & Diamond Platinum Ring, 1930s

Art Déco 2.01ct Colombian Emerald & Diamond Platinum Ring, 1930s

Located in Malmö, Skåne län

Ravishing! A gorgeous American platinum, 2 ct emerald and diamond Art Déco ring. The ring is designed as a stylised bow set with a rectangular richly saturated colombian emerald of...

Category

Vintage 1930s American Art Deco Cocktail Rings

Materials

Diamond, Emerald, Platinum

Vintage 1970s Meister Emerald and Diamond Ring

Vintage 1970s Meister Emerald and Diamond Ring

Vintage 1970s Meister Emerald and Diamond Ring

Located in New York, NY

Finely crafted in 18K white gold with three Emeralds weighing a total of 2.32 carats, Marquise-cut Diamonds weighing a total of 2.09 carats, and Round Brilliant cut Diamonds weighing...

Category

Vintage 1970s Cocktail Rings

Materials

Diamond, Emerald, 18k Gold

Platinum Vintage Cocktail Ring Diamonds Emeralds

Platinum Vintage Cocktail Ring Diamonds Emeralds

Platinum Vintage Cocktail Ring Diamonds Emeralds

Located in Zurich, Zollstrasse

Lovely Platinum Vintage Ring featruing 30 brilliant cut Emeralds weighing approximately 2.50 ct in a surrounding of 18 brilliant cut Diamonds weighing...

Category

Vintage 1970s Unknown Contemporary Cocktail Rings

Materials

Diamond, Emerald, Platinum