1920s Art Deco Old European Cuts Handmade Filigree 2.00CTW Platinum Diamond Ring

This is a stunning original Art Deco era dome ring, handcrafted in solid platinum and set with old European cut diamonds in a classic 1920s design. The ring features a high-quality center stone flanked by two additional old European cuts and four accent diamonds, all set in an ornate pierced filigree gallery with floral-style shoulders and a grooved, polished shank.

The center diamond is prong-set and exhibits excellent cut proportions, VS clarity, and faint blue fluorescence, characteristic of well-cut antique stones. The setting is entirely hand fabricated—slightly asymmetrical, as expected from original Deco-era workmanship—and features detailed filigree with an open gallery that allows maximum light play.

The ring measures approximately 10.40 mm wide at the top, with a 1.80 mm shank and a total height of 6.00 mm off the finger. It weighs 4.74 grams and is currently a size 7.5. All diamonds are natural, well-matched for G–H color, and securely set. One accent diamond has a minor chip, visible only under magnification.

Details:

• Metal: Platinum (tested)

• Total Weight: 4.74 grams

• Finger Size: 7.5

• Construction: Handmade (not perfectly symmetrical)

• Era: Art Deco, circa 1920s

• Design: Cutout filigree with floral shoulders, grooved shank, and open gallery

• Condition: Excellent vintage condition; one small accent diamond is chipped

Approximate Diamond Description:
All weights estimated by formula. Graded using GIA standards.

One (1) Center Diamond:

• Shape & Cut: Old European Cut

• Measurements: 5.72 x 5.72 x 3.80 mm

• Estimated Weight: 0.85 carats

• Color Grade: G–H

• Clarity Grade: VS

• Fluorescence: Faint Blue

• Cut Grade: Excellent

One (1) Side Diamond:

• Shape & Cut: Old European Cut

• Measurements: 4.78 x 4.78 x 3.08 mm

• Estimated Weight: 0.47 carats

• Color Grade: G–H

• Clarity Grade: I1

• Fluorescence: Faint Blue

One (1) Side Diamond:

• Shape & Cut: Old European Cut (Flat Crown)

• Measurements: 5.04 x 5.04 x 2.87 mm

• Estimated Weight: 0.53 carats

• Color Grade: G–H

• Clarity Grade: SI1

• Fluorescence: None

Four (4) Accent Diamonds:

• Shape & Cut: Single Cut

• Measurements: 2.11–2.15 mm

• Estimated Total Weight: 0.15 carats

• Color Grade: G–H

• Clarity Grade: SI (average, one chipped)

• Culet: Small open

Estimated Total Diamond Weight: 2.00 carats

Why You'll Love It:
This heirloom-quality engagement or cocktail ring blends the romantic geometry of the Art Deco era with exceptional diamond quality and craftsmanship. With natural old European cuts, detailed filigree, and hand-built platinum construction, it’s a true collector’s piece and a wearable piece of history.

About Me:
I’m Shelly Devine, owner of Devine & Co., a private jewelry office in Carmel-by-the-Sea, California. I’m a GIA Graduate Gemologist, Certified Master Appraiser (NAJA), Registered Master Valuer (RMV), and ASA Master Gemologist Appraiser candidate, with over 20 years of professional experience in fine jewelry, antique pieces, and estate valuation.

Every piece I offer is personally inspected, tested, and described with accuracy, honesty, and gemological expertise. I work closely with collectors, estate attorneys, and private clients offering bespoke services from valuation to consignment and custom design.

Buy with confidence from a seasoned jewelry professional. Ships fully insured. Questions welcome.