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Antique Platinum Hallmarks

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.85 Carat Diamond Platinum Cocktail Ring
.85 Carat Diamond Platinum Cocktail Ring

.85 Carat Diamond Platinum Cocktail Ring

Located in Hicksville, NY

Item Details: Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 5.0 grams Diamond Details: Weight: .85ct, total weight Cut: Old European brilliant Color: G-H Cla...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.90 Carat Art Deco Diamond Platinum Engagement Ring
.90 Carat Art Deco Diamond Platinum Engagement Ring

.90 Carat Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Item Details: Ring Size: 8.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.9 grams Center Diamond Details: Weight: .90 Carat Cut: Old European Brilliant Color: K Clarity...

Category

1910s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.50 Carat Total Weight Diamond Platinum Engagement Ring
.50 Carat Total Weight Diamond Platinum Engagement Ring

.50 Carat Total Weight Diamond Platinum Engagement Ring

Located in Hicksville, NY

Item Details: Ring Size: 7.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Diamond Details: Weight: .50 Carat Total Weight Cut: Antique Single Cut Color: F-G Cla...

Category

1910s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

Circa 1920s Art Deco Platinum Old Cut Diamond Band Size 7.5
Circa 1920s Art Deco Platinum Old Cut Diamond Band Size 7.5

Circa 1920s Art Deco Platinum Old Cut Diamond Band Size 7.5

Located in Hicksville, NY

Year: 1920s Item Details: Ring Size: 7.5 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.8grams Diamond Details: .40ct total weight, Antique single cut, G Color, VS...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Platinum

.50 Carat Art Deco Diamond Platinum Wedding Band
.50 Carat Art Deco Diamond Platinum Wedding Band

.50 Carat Art Deco Diamond Platinum Wedding Band

Located in Hicksville, NY

Ring Size: 6.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Center Diamond Details: Weight: .50ct Cut: Old European brilliant Color: G Clarity: VS Finger to Top ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Estate 1920s Art Deco Platinum Engraved Wedding Band Size 6 - VHK#975
Estate 1920s Art Deco Platinum Engraved Wedding Band Size 6 - VHK#975

Estate 1920s Art Deco Platinum Engraved Wedding Band Size 6 - VHK#975

Located in Hicksville, NY

Estate 1920s Art Deco Platinum Engraved Wedding Band Size 6 - VHK#975 Year: 1920S Item Details: Ring Size: 6 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 gra...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Platinum

.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details: Weight: .40carat, total weight Cut: Old European brilliant Color: G/H Clarity: VS Fing...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.15 Carat Total Weight Platinum Wedding Band
.15 Carat Total Weight Platinum Wedding Band

.15 Carat Total Weight Platinum Wedding Band

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.7 grams Engraved: 11-16-27 Diamond Details: Weight: .15ct, total Cut: Old European brilliant Color: G Clarity...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Platinum

.15 Carat Total Weight Diamond Platinum Wedding Band
.15 Carat Total Weight Diamond Platinum Wedding Band

.15 Carat Total Weight Diamond Platinum Wedding Band

Located in Hicksville, NY

Item Details: Ring Size: 5.75 Metal Type: Platinum [Hallmark and Tested] Weight: 2.5 grams Side Stone Details: Shape: Old Single Cut Total Carat Weight: .15 carat, total weight Co...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7 Metal Type: Platinum [Hallmarked, and Tested] Weight: 1.8 grams Diamond Details: Weight: .15 carat total weight Cut: Old European brilliant Color: F Clarity: VS Finger...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Art Deco Platinum Old European Diamond Eternity Band VHK #546
Art Deco Platinum Old European Diamond Eternity Band VHK #546

Art Deco Platinum Old European Diamond Eternity Band VHK #546

Located in Hicksville, NY

Ring Size: 6.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.0 grams Diamond Details: .75ct, total weight.

Category

1920s European Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Edwardian Platinum Tiffany & Co. Old European Diamond Ribbon Brooch
Edwardian Platinum Tiffany & Co. Old European Diamond Ribbon Brooch

Edwardian Platinum Tiffany & Co. Old European Diamond Ribbon Brooch

By Tiffany & Co.

Located in Hicksville, NY

Edwardian Platinum Tiffany & Co. Old European Diamond Ribbon Brooch Item Details: Metal Type: Platinum [Hallmarked, and Tested] Weight: 4.6 grams Diamond Details: Old European Bril...

Category

Late 19th Century Edwardian Antique Platinum Hallmarks

Materials

Diamond, Platinum

.30 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.30 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.30 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.5 grams Diamond Details: Weight: .30ct, total weight Cut: Old European brilliant Color: G-H Clarity: VS/SI Fing...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Circa 1920s Platinum Art Deco 1.06ct Old European Engagement Ring
Circa 1920s Platinum Art Deco 1.06ct Old European Engagement Ring

Circa 1920s Platinum Art Deco 1.06ct Old European Engagement Ring

Located in Hicksville, NY

Year: 1920s Item Details: Ring Size: 6.5 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.4 grams Diamond Details: 1.06ct, Old European brilliant, Light Yellow (O/...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Yellow Diamond, Platinum

GIA Certified 1.61 Carat Edwardian Diamond Platinum Engagement Ring
GIA Certified 1.61 Carat Edwardian Diamond Platinum Engagement Ring

GIA Certified 1.61 Carat Edwardian Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 8.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.0 grams Center Diamond Details: GIA REPORT #: 1216990530 Weight: 1.61carat Cut: Old European brilliant Color:...

Category

1910s Unknown Edwardian Antique Platinum Hallmarks

Materials

Diamond, Platinum

.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details: Weight: .15ct, total Cut: Old European brilliant Color: F Clarity: VS Finger to Top ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Item Details: Ring Size: 7.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Diamond Details: Weight: .50 carat total weight Cut: Old European brilliant Color: F C...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.15 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Item Details: Ring Size: 8.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.2 grams Diamond Details: Weight: .15 Carat Total Weight Cut: Old European brilliant Color: F C...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Circa 1920s Platinum 1.00ct Old European Diamond 3 Stone Ring
Circa 1920s Platinum 1.00ct Old European Diamond 3 Stone Ring

Circa 1920s Platinum 1.00ct Old European Diamond 3 Stone Ring

Located in Hicksville, NY

Year: 1920s Item Details: Ring Size: 7 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 4.8 grams Diamond Details: 1.00ct total weight, Old European Brilliant, H Color...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

1920s Art Deco Platinum .50ct Old European Cut Diamond Engagement Ring
1920s Art Deco Platinum .50ct Old European Cut Diamond Engagement Ring

1920s Art Deco Platinum .50ct Old European Cut Diamond Engagement Ring

Located in Hicksville, NY

Year: 1920s Item Details: Ring Size: 6.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.1 grams Diamond Details Center Diamond: .50ct, Old European Brilliant, G Color, SI2 ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.25 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.25 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.25 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Item Details: Ring Size: 8.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2 grams Diamond Details: Weight: .25 Carat Total Weight Cut: Old European Brilliant Color: G Clar...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

1.22 Carat Diamond Platinum Engagement Ring
1.22 Carat Diamond Platinum Engagement Ring

1.22 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Center Diamond Details: Weight: 1.22 carat Cut: Old European Brilliant Color: K Clarity: VS1 Side Diamo...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.51 Carat Diamond Platinum Engagement Ring
.51 Carat Diamond Platinum Engagement Ring

.51 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Center Diamond Details: Weight: .51 carat Cut: Old European Brilliant Color: H Clarity: SI1 Side Diamo...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.68 Carat Diamond Platinum Engagement Ring
.68 Carat Diamond Platinum Engagement Ring

.68 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.5 grams Center Diamond Details: Weight: .68 carat Cut: Old European Brilliant Color: I Clarity: VS1 Side Di...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.86 Carat Diamond Platinum Engagement Ring
.86 Carat Diamond Platinum Engagement Ring

.86 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5.95 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.2 grams Center Diamond Details: Weight: .86 carat Cut: Old European Brilliant Color: J Clarity: VS1 Side Dia...

Category

1910s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

1.15 Carat Diamond Platinum Engagement Ring
1.15 Carat Diamond Platinum Engagement Ring

1.15 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.8 grams Center Diamond Details: Weight: 1.15 carat Cut: Old European Brilliant Color: K Clarity: VS1 Side Dia...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.85 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.85 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.85 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 4.4 grams Diamond Details: Weight: .85ct, total weight Cut: Old European brilliant Color: G Clarity: VS Finger to...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.75 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.75 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.75 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.9grams Diamond Details: Weight: .75ct, total weight Cut: Old European brilliant Color: F-G Clarity: VS Finge...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 4 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.10 grams Diamond Details: Weight: .50ct, total weight Cut: Old European brilliant Color: G Clarity: VS Finger t...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 4.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.8 grams Diamond Details: Weight: .50ct, total weight Cut: Old European brilliant Color: F Clarity: VS Finger...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Circa 1920s Platinum Art Deco .60ct Old European Engagement Ring
Circa 1920s Platinum Art Deco .60ct Old European Engagement Ring

Circa 1920s Platinum Art Deco .60ct Old European Engagement Ring

Located in Hicksville, NY

Item Details: Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.8 grams Center Diamond Details: .60ct, Old European Brilliant, H Color, SI1 Clarity Side Diamonds: Antique Marqu...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Platinum

.90 Carat Total Weight Diamond Platinum Wedding Band
.90 Carat Total Weight Diamond Platinum Wedding Band

.90 Carat Total Weight Diamond Platinum Wedding Band

Located in Hicksville, NY

Ring Size: 7.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.2 grams Diamond Details: Weight: .90ct, total weight Cut: Old European brilliant Color: G-H Clarity: VS Finge...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.20 Carat Total Weight Diamond Platinum Wedding Band
.20 Carat Total Weight Diamond Platinum Wedding Band

.20 Carat Total Weight Diamond Platinum Wedding Band

Located in Hicksville, NY

Ring Size: 5.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details: Weight: .20ct, total weight Cut: Old European brilliant Color:G-H Clarity: VS Finger...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.92 Carat Diamond Platinum Engagement Ring
.92 Carat Diamond Platinum Engagement Ring

.92 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.6 grams Center Diamond Details: Weight: .92 carat Cut: Old European Brilliant Color: H Clarity: VS2 Side Di...

Category

1910s Unknown Edwardian Antique Platinum Hallmarks

Materials

White Diamond, Platinum

1.10 Carat Diamond Platinum Engagement Ring
1.10 Carat Diamond Platinum Engagement Ring

1.10 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 3 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond Details: Weight: 1.10 carat Cut: Rose Cut Color: J Clarity: VS1 Side Diamond Details: We...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.7 grams Diamond Details: Weight: .50ct, total weight Cut: Old European brilliant Color: G/H Clarity: VS Fing...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

3.00 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
3.00 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

3.00 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7 Metal Type: Platinum [Hallmarked, and Tested] Weight: 7.9 grams Diamond Details: Weight: 3.00ct, total weight Cut: Old European brilliant Color: F-G Clarity: VS Finger...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.50 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details: Weight: .50ct, total weight Cut: Old European brilliant Color: G/H Clarity: SI Fing...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.55 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.55 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.55 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details: Weight: .55ct, total weight Cut: Old European brilliant Color: G-H Clarity: VS Finger ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

1.25 Carat Diamond Platinum Engagement Ring
1.25 Carat Diamond Platinum Engagement Ring

1.25 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.8 grams Center Diamond Details: Weight: 1.25 carat Cut: Carre Cut Color: I Clarity: SI2 Side Diamond Detai...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

1920 Art Deco Platinum 1.00cttw Antique Cut Diamond Wedding Band
1920 Art Deco Platinum 1.00cttw Antique Cut Diamond Wedding Band

1920 Art Deco Platinum 1.00cttw Antique Cut Diamond Wedding Band

Located in Hicksville, NY

Year: 1920 Item Details: Ring Size: 8.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.9 grams Diamond Details Center Diamond: 1.00cttw Cut: Antique Single Cut Color: F-G Cl...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Art Déco Ladies’ Watch in Platinum with Diamonds – 1920s/30s
Art Déco Ladies’ Watch in Platinum with Diamonds – 1920s/30s

Art Déco Ladies’ Watch in Platinum with Diamonds – 1920s/30s

Located in Milano, MI

Exquisite ladies’ watch from the Art Déco period, crafted in platinum hallmarked “PLATINA” and fully set with old-cut and huit-huit diamonds, weighing approximately 1.70 ct in total.

Category

Early 20th Century Antique Platinum Hallmarks

Materials

Diamond, Platinum

.20 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.20 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.20 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 4.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.20 grams Center Diamond Details: Weight: .20ct, total weight Cut: Old European brilliant Color: F-G Clarity: ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

GIA Certified 1.09 Carat Edwardian Diamond Platinum Engagement Ring
GIA Certified 1.09 Carat Edwardian Diamond Platinum Engagement Ring

GIA Certified 1.09 Carat Edwardian Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.9 grams Center Diamond Details: GIA REPORT #: 6372846114 Weight: 1.09 carat Cut: Old European brilliant Color:...

Category

1910s Unknown Edwardian Antique Platinum Hallmarks

Materials

Diamond, Platinum

.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.40 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 3.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 5.5 grams Diamond Details: Weight: .40ct, total weight Cut: Old European brilliant Color: G-H Clarity: VS/SI F...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.95 Carat Diamond Platinum Cocktail Ring
.95 Carat Diamond Platinum Cocktail Ring

.95 Carat Diamond Platinum Cocktail Ring

Located in Hicksville, NY

Ring Size: 7 Metal Type: Platinum [Hallmarked, and Tested] Weight: 4 grams Center Diamond Details: Weight: .95 carat Cut: Old European Brilliant Color: J Clarity: VS2 Side Diamo...

Category

1910s Unknown Edwardian Antique Platinum Hallmarks

Materials

White Diamond, Platinum

1.00 Carat Art Deco Diamond Platinum Engagement Ring
1.00 Carat Art Deco Diamond Platinum Engagement Ring

1.00 Carat Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 8.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.2 grams Center Diamond Details: GIA REPORT #: 2221680504 Weight: 1.00ct Cut: Old European brilliant Color: I ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.74 Carat Diamond Platinum Engagement Ring
.74 Carat Diamond Platinum Engagement Ring

.74 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.0 grams Center Diamond Details: GIA LAB REPORT #:1226622854 Weight: .74ct Cut: Old European brilliant Color: E...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.45 Carat Art Deco Diamond Platinum Engagement Ring
.45 Carat Art Deco Diamond Platinum Engagement Ring

.45 Carat Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 4.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.0 grams Diamond Details: Weight: .45ct Cut: Old European brilliant Color: F Clarity: VS1 Side Diamonds: .10ct,...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Art Deco Platinum Old European Cut Diamond Ring, circa 1920s
Art Deco Platinum Old European Cut Diamond Ring, circa 1920s

Art Deco Platinum Old European Cut Diamond Ring, circa 1920s

Located in Hicksville, NY

Ring Size: 5 (with ring sizing ball, 6 without) Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.9 grams ‌ Diamond Details: Weight: .40ct, total weight Cut: Old European Cut C...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

GIA Certified .51 Carat Edwardian Diamond Platinum Engagement Ring
GIA Certified .51 Carat Edwardian Diamond Platinum Engagement Ring

GIA Certified .51 Carat Edwardian Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 7.5 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.7 grams Center Diamond Details: GIA REPORT #:5212708363 Weight: .51ct Cut: Antique Cushion Color: Blue Measure...

Category

Early 1900s Unknown Edwardian Antique Platinum Hallmarks

Materials

Diamond, Platinum

.50 Carat Total Weight Art Deco Diamond Platinum Wedding Band
.50 Carat Total Weight Art Deco Diamond Platinum Wedding Band

.50 Carat Total Weight Art Deco Diamond Platinum Wedding Band

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.1grams Diamond Details: Weight: .50ct, total weight Cut: Old European brilliant Color: G Clarity: VS Finger to ...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.40 Carat Diamond Platinum Engagement Ring
.40 Carat Diamond Platinum Engagement Ring

.40 Carat Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond Details: Weight: .40 carat Cut: Old European Brilliant Color: H Clarity: VS Side Diamo...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

White Diamond, Platinum

GIA Certified .89 Carat Art Deco Diamond Platinum Engagement Ring
GIA Certified .89 Carat Art Deco Diamond Platinum Engagement Ring

GIA Certified .89 Carat Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 4.75 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Center Diamond Details: GIA REPORT #:6214861435 Weight: .89carat Cut: Old European brilliant Color: J...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

.35 Carat Total Weight Art Deco Diamond Platinum Engagement Ring
.35 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

.35 Carat Total Weight Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 3 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.0 grams Diamond Details: Weight: .35carat, total Cut: Old European brilliant Color: G-H Clarity: SI Pearl Detai...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

Circa 1920s Platinum .50ct Old European Diamond Engagement Ring
Circa 1920s Platinum .50ct Old European Diamond Engagement Ring

Circa 1920s Platinum .50ct Old European Diamond Engagement Ring

Located in Hicksville, NY

Year: 1920s Item Details: Ring Size: 6 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 7.6 grams CenterDiamond Details: .50ct, old European brilliant, G color, VS Cla...

Category

1920s Antique Platinum Hallmarks

Materials

Diamond, Platinum

Platinum Art Deco 1920s Three Stone Ring with Sapphire Accents
Platinum Art Deco 1920s Three Stone Ring with Sapphire Accents

Platinum Art Deco 1920s Three Stone Ring with Sapphire Accents

Located in Hicksville, NY

Year: 1920s Item Details: Ring Size: 8.25 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.6 grams Diamond Details: 1.00ct total weight, Old European Brilliant, J/K ...

Category

1920s Art Deco Antique Platinum Hallmarks

Materials

Diamond, Sapphire, Platinum

GIA Certified 1.21 Carat Diamond Platinum
GIA Certified 1.21 Carat Diamond Platinum

GIA Certified 1.21 Carat Diamond Platinum

Located in Hicksville, NY

Ring Size: 6 Metal Type: Platinum [Hallmarked, and Tested] Weight: 3 grams Center Diamond Details: GIA REPORT #: 2213152876 Weight: 1.21 carat Cut: Old European Brilliant Color: J...

Category

1910s Unknown Edwardian Antique Platinum Hallmarks

Materials

White Diamond, Platinum

Platinum Edwardian 1922 Engraved Art Deco .55ct Old European Diamond Engagement
Platinum Edwardian 1922 Engraved Art Deco .55ct Old European Diamond Engagement

Platinum Edwardian 1922 Engraved Art Deco .55ct Old European Diamond Engagement

Located in Hicksville, NY

Year: 1922 (Engraved inner shank) Item Details: Ring Size: 4.5 (Sizable) Metal Type: Platinum [Hallmarked, and Tested] Weight: 3.7 grams Diamond Details: .50ct, total weight.

Category

1920s Edwardian Antique Platinum Hallmarks

Materials

Diamond, Platinum

GIA Certified .98 Carat Art Deco Diamond Platinum Engagement Ring
GIA Certified .98 Carat Art Deco Diamond Platinum Engagement Ring

GIA Certified .98 Carat Art Deco Diamond Platinum Engagement Ring

Located in Hicksville, NY

Ring Size: 5.25 Metal Type: Platinum [Hallmarked, and Tested] Weight: 2.5 grams Center Diamond Details: GIA REPORT #: 6217872784 Weight: .98carat Cut: Antique Cushion Color: K Clari...

Category

1920s Unknown Art Deco Antique Platinum Hallmarks

Materials

Diamond, Platinum

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Antique Platinum Hallmarks For Sale on 1stDibs

Find an expansive variety of antique platinum hallmarks available on 1stDibs. These distinct designs — crafted with great care and often made from platinum, gold and 18k gold — can elevate any look. Our collection is diverse and broad-ranging, and pieces in stock date back to the 18th Century while others were produced as recently as the 20th Century. Our collection of antique platinum hallmarks includes designs that are universally popular, but Edwardian and Art Deco styles, specifically, are sought with frequency. Versions of these items have been a part of the life’s work for many jewelers, but those produced by Cartier, Tiffany & Co. and Hamilton are consistently popular. Today, if you’re looking for old european cut antique platinum hallmarks and are unable to find the perfect match, our selection also includes round cut and old mine cut alternatives. There aren’t many items for men in our collection of antique platinum hallmarks, as most of the options available are for women.

How Much are Antique Platinum Hallmarks?

Prices for antique platinum hallmarks can differ depending upon size, time period and other attributes — at 1stDibs, these accessories begin at $556 and can go as high as $206,353, while antique platinum hallmarks, on average, fetch $5,500.

The Legacy of Diamond in Jewelry Design

Antique diamond rings, diamond tiaras and dazzling vintage diamond earrings are on the wish lists of every lover of fine jewelry. And diamonds and diamond jewelry are primarily associated with storybook engagements and red-carpet grand entrances — indeed, this ultra-cherished gemstone has a dramatic history on its hands.

From “A Diamond Is Forever” to “Diamonds Are a Girl’s Best Friend,” pop culture has ingrained in our minds that diamonds are the most desired, the most lasting and the most valuable gemstone. But what makes the diamond so special? Each stone — whether it’s rubies, sapphires or another stone — is unique and important in its own right. April babies might claim diamonds for themselves, but just about everyone wants this kind of sparkle in their lives!

There are several factors that set diamonds apart from other stones, and these points are important to our gem education.

Diamonds are minerals. They are made up of almost entirely of carbon (carbon comprises 99.95 percent; the remainder consists of various trace elements). Diamonds are the hardest gemstones, ranking number 10 on the Mohs Hardness Scale. Even its name, diamond, is rooted in the Greek adamas, or unconquerable. The only object that can scratch a diamond is another diamond. Diamonds are formed deep within the earth at very high temperatures (1,652–2,372 degrees Fahrenheit at depths between 90 and 120 miles beneath the earth’s surface) and are carried up by volcanic activity. Diamonds are quite rare, according to the Gemological Institute of America, and only 30 percent of all the diamonds mined in the world are gem quality.

In the 1950s, the Gemological Institute of America developed the 4Cs grading system to classify diamonds: clarity, color, cut and carat weight. Not all diamonds are created equal (there are diamonds, and then there are diamonds). The value of the diamond depends on the clarity (flawless diamonds are very rare but a diamond's value decreases if there are many blemishes or inclusions), color (the less color the higher the grade), cut (how the diamond’s facets catch the light, certain cuts of diamonds show off the stone better than others) and carat weight (the bigger, the better).

When you start shopping for a diamond engagement ring, always prioritize the cut, which plays the largest role in the diamond's beauty (taking the time to clean your diamond ring at least every six months or so plays a role in maintaining said beauty). And on 1stDibs, a range of buying guides can be found for those in the market for antique engagement ringsvintage engagement rings or Art Deco engagement rings

Shop antique and vintage diamond rings, diamond necklaces and other extraordinary diamond jewelry on 1stDibs.