1 of 7 images

Rare Untreated 2.31 Carat Colombian Emerald Diamond Ring


Circa 1925 This vintage French platinum (head) and 18K white gold (shank) engagement ring features a very rare untreated 2.31 ct Colombian emerald. The cushion cut emerald is extremely clean and full of life. The center stone is framed by chunky old European cut diamonds (H-I color, SI clarity). Estimated total diamond weight is 1.12 ct. The emerald measures 9.60 x 7.40 x 4.30 mm. Majority of emeralds are treated to reduce the visibility of fissures. According to one Colombian emerald dealer, less than 0.1% of of all Colombian emeralds are not treated. The ring is marked with French eagle’s head and dog’s head assay marks for gold and platinum. The emerald and diamond top measures 15 x 13 mm (5/8 x 1/2 in.) Ring size 7.5 (18 mm) sizable The ring comes with AGL Prestige Gemstone Report No. 1089832 for the emerald.


  • Creator
  • Place of origin
  • Date of manufacture
    c. 1925
  • Condition
  • Wear
    Wear consistent with age and use.
  • Seller location
    Chicago, IL
  • Reference number

Shipping, Returns & Payment

  • Online Payment Methods
    1stdibs accepts the following payment methods
  • Item Invoice
    Generate an invoice that you can customize and print.

About the Seller

Top Seller
1stdibs seller since 2012
Typical response time: 4 hrs
Located in Chicago, IL
You may also contact the seller by phoneCall seller through 1stdibs

Why Shop on 1stdibs?

Learn More

Only Vetted, Professional Sellers

Buyer Protection Guaranteed

Fully Insured Global Deliveries

More From This Seller
Antique Emerald Diamond Marquise Shaped Ring
The ring was handcrafted in Moscow. It is marked with 56 zolotnik old Russian gold standard (14K), with assayer's initials of Moscow assay master Ivan Lebedkin and maker's i...
Antique 2.24 Carat Sapphire Diamond Cluster Eng...
Circa 1910 An antique 18K gold and platinum engagement ring is centered with a 2.24 ct natural blue sapphire surrounded by sparkling bright white old European cut diamonds (G-H colo...
Antique Diamond Cluster Engagement Ring
Circa 1890s This classic antique 14K gold cluster ring with split shank is prong-set with nine bright white brilliant old cut diamonds (E-F color, SI clarity). The center diamond i...
Rare Emerald Cut 1.91 Carat Russian Demantoid D...
A contemporary 18K gold ring features an emerald-cut 1.91 ct sparkling apple green Russian demantoid garnet flanked by two tapered baguette cut diamonds ( 0.35 ct total weight). This...
You May Also Like
Vintage 1.80 Carat Colombian Emerald Diamond Go...
Fine and impressive engagement ring centering an emerald cut natural Colombian Emerald weighing 1.80 carat, flanked by 1.50 carats of baguette and round brilliant cut diamonds G colo...
Estate 3.00 Carat Colombian Emerald Diamond Gol...
Stunning engagement ring, hand-crafted in 18k white, centering an emerald cut natural Colombian Emerald weighing 3.00 carat, flanked by 1.20 carats of baguette and round brilliant cu...
1.63 Carat Emerald and 2.31 Carat Diamond Yello...
A stunning 1.63 carat emerald and 2.31 carat diamond, 18 carat yellow gold cocktail ring; part of our diverse jewellery and estate jewelry collections. This stunning, fine and impre...
Natural Colombian Emerald Diamond Platinum Clus...
Colombian emerald and diamond cluster ring. Set with a cushion shape old cut Natural Colombian emerald with no colour enhancement in an open back yellow gold rubover setting with an ...
Colombian Emerald and Old Cut Diamond Square Cl...
A charming Victorian cluster ring circa 1890, set to the centre with a beautiful square emerald-cut emerald of Colombian origin set within a scalloped gold border and surrounded by a...
4.31 Carat Colombian Emerald Engagement Ring
A very fine Colombian emerald in a platinum and 18k yellow gold ring with two half-moon shape diamond side stones approx. 1.00 ctw. Emerald is accompanied by an AGL report stating it...
6.10 Carat AGL Graded Untreated Colombian Emera...
This ring features an exquisite 6.10 carat Colombian emerald. The emerald has not been oiled or treated in any way, as per an AGL certificate. The ring also contains 2 trapezoid diam...
1990s 4.30 Carat Emerald Diamonds Gold Cluster ...
A stunning, fine and impressive vintage 4.30 carat natural emerald and 3.24 carat diamond, 18 karat white gold cluster ring; an addition to our vintage jewelry and estate jewelry col...