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Hallmark Pl

.3 Carat Diamond Blue Enamel Yellow Gold Turtle Brooch
.3 Carat Diamond Blue Enamel Yellow Gold Turtle Brooch

.3 Carat Diamond Blue Enamel Yellow Gold Turtle Brooch

Located in Stamford, CT

Blue enamel Turtle brooch in 18k yellow gold with a bright full cut Diamond eye. 1 round full cut Diamonds, approx. total weight .03cts, G, SI1 18k yellow gold Tested and stamped: ...

Category

Mid-20th Century Brooches

Materials

Diamond, Gold, 18k Gold, Yellow Gold, Enamel

Longmire of London Enamel Gold Fruit Cufflinks
Longmire of London Enamel Gold Fruit Cufflinks

Longmire of London Enamel Gold Fruit Cufflinks

Located in New York, NY

Come in original fitted box. Hallmarked Longmire, PL, English gold marks. Weight of the pair - 15.1 grams.

Category

20th Century British Cufflinks

Materials

Gold, Enamel

Men's 5 Diamond Ring in 14 Karat and Platinum
Men's 5 Diamond Ring in 14 Karat and Platinum

Men's 5 Diamond Ring in 14 Karat and Platinum

Located in Honolulu, HI

This is a very well crafted ring, vintage in excellent condition. The ring is Hallmarked "EREV" stamped "14K" "PL" on the inside.

Category

21st Century and Contemporary American Modern Cluster Rings

Materials

Diamond, Platinum, Yellow Gold, 14k Gold

Recent Sales

Art Deco Styl  Colombia Emerald Diamond Sapphire Ring Platinum
Art Deco Styl  Colombia Emerald Diamond Sapphire Ring Platinum

Art Deco Styl Colombia Emerald Diamond Sapphire Ring Platinum

Located in Bad Kissingen, DE

Platinum hallmarked PL 950 0,91 ct emerald colombia 1,02 ct sapphire 1,54 ct diamond size 55,5 weight 11 gram

Category

21st Century and Contemporary European Art Deco Fashion Rings

0, 50 Ct Solitaire W/SI Platinum Chain
0, 50 Ct Solitaire W/SI Platinum Chain

0, 50 Ct Solitaire W/SI Platinum Chain

Located in Bad Kissingen, DE

Platinum 950 hallmarked PL 950 1 Brillant 0,50 ct white, small inclusions Chain 42 cm long 5,87 gram stone not can come out of the chain

Category

21st Century and Contemporary German Chain Necklaces

Materials

Diamond, Platinum

Spectacular Art Deco Style Platinum Sapphire and Diamond Line Bracelet
Spectacular Art Deco Style Platinum Sapphire and Diamond Line Bracelet

Spectacular Art Deco Style Platinum Sapphire and Diamond Line Bracelet

Located in London, London

Spectacular Art Deco style platinum mounted sapphire & diamond bracelet, designed as a line of three French-cut diamonds and five sapphires, 18 diamonds, 30 sapphires, approx 0.25 ea...

Category

20th Century Unknown Art Deco Tennis Bracelets

Materials

Diamond, Blue Sapphire, Platinum

Platinum Diamond and Sapphire Ring
Platinum Diamond and Sapphire Ring

Platinum Diamond and Sapphire Ring

Located in Washington Depot, CT

Diamond color: H Diamond clarity: SI1 Ring Size: 8.5 Weight: 3.0 dwt. / 4.7 gr. Hallmark: PL Very good condition, professionally polished.

Category

20th Century Fashion Rings

Materials

Multi-gemstone, Platinum

BUCCELLATI Diamond Emerald Platinum Gold Brooch/Pendant Necklace
BUCCELLATI Diamond Emerald Platinum Gold Brooch/Pendant Necklace

BUCCELLATI Diamond Emerald Platinum Gold Brooch/Pendant Necklace

By Buccellati

Located in New York City, NY

Chain is approx. 16" long. Hallmarks- Brooch/Pendant: Buccellati, Italy, PL (platinum).

Category

21st Century and Contemporary Italian Contemporary Brooches

Materials

Diamond, Emerald, 18k Gold, Platinum

Mid Century Half Diamond Band Scrolled Sz 6.5 Platinum Ring Fine Bridal Jewelry
Mid Century Half Diamond Band Scrolled Sz 6.5 Platinum Ring Fine Bridal Jewelry

Mid Century Half Diamond Band Scrolled Sz 6.5 Platinum Ring Fine Bridal Jewelry

Located in Torrance, CA

The band measures 8mm wide (0.31 inches), rising 3mm from the finger. Metal & Hallmark: 900 platinum. The ring is hallmarked "10% IRID PL"

Category

Mid-20th Century American Modern Band Rings

Materials

Diamond, White Diamond, Platinum

Fabulous Fifties Aquamarine Ring
Fabulous Fifties Aquamarine Ring

Fabulous Fifties Aquamarine Ring

Located in Litchfield, CT

WEIGHT: 6.2 grams STONES: 4.0 carat aquamarine and .14 carats total weight of H color, VS clarity diamonds HALLMARKS: 223483 PL STOCK NUMBER: 26748 Jewelry acquired from...

Category

Vintage 1950s Cocktail Rings

Materials

Aquamarine, Diamond, Platinum

Antique Edwardian Sapphire Diamond Ring Platinum Old Mine Filigree Fine Vintage
Antique Edwardian Sapphire Diamond Ring Platinum Old Mine Filigree Fine Vintage

Antique Edwardian Sapphire Diamond Ring Platinum Old Mine Filigree Fine Vintage

Located in Torrance, CA

The mount measures 14mm wide (0.55 inches), rising 6.5mm from the finger. Metal & Hallmark: 900 platinum. The ring is hallmarked "IRID PL".

Category

Early 20th Century Unknown Edwardian Cocktail Rings

Materials

Diamond, Blue Sapphire, Platinum

Antique 1920s Five Stone 18ct Gold Platinum 0.25ct Diamond Ring
Antique 1920s Five Stone 18ct Gold Platinum 0.25ct Diamond Ring

Antique 1920s Five Stone 18ct Gold Platinum 0.25ct Diamond Ring

Located in London, GB

This ring is emblematic of that transition – a celebration of diamonds in their purest form. HALLMARKS & STAMPS PL, 18ct ERA 1920s MEASUREMENTS Height - 0.3cm / 0.1 Width - 1.5cm ...

Category

Vintage 1920s English Wedding Rings

Materials

Diamond, Gold, Platinum

6ct Aquamarine Diamond Ring Vintage Gemstone Engagement Platinum
6ct Aquamarine Diamond Ring Vintage Gemstone Engagement Platinum

6ct Aquamarine Diamond Ring Vintage Gemstone Engagement Platinum

Located in Torrance, CA

The mount measures 14mm in length (0.55 inches) and 8.5mm wide (0.33 inches) rising 7mm from the finger. Metal & Hallmark: Platinum. The ring is hallmarked "PL" for platinum.

Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Aquamarine, Diamond, White Diamond, Platinum

1.60 Carat Emerald Diamond Beaded Channel Set Platinum Wedding Band
1.60 Carat Emerald Diamond Beaded Channel Set Platinum Wedding Band

1.60 Carat Emerald Diamond Beaded Channel Set Platinum Wedding Band

By OGI

Located in Stamford, CT

Princess cut Diamond and Emerald beaded channel set platinum wedding band from OGI with hand engraving along the setting. 15 Princess cut Diamonds, approx. total weight .85cts, F, V...

Category

21st Century and Contemporary Wedding Rings

Materials

Diamond, Emerald, Platinum

6 Carat Aquamarine Diamond Ring Vintage Cocktail 18 Karat Gold Platinum Jewelry
6 Carat Aquamarine Diamond Ring Vintage Cocktail 18 Karat Gold Platinum Jewelry

6 Carat Aquamarine Diamond Ring Vintage Cocktail 18 Karat Gold Platinum Jewelry

Located in Torrance, CA

The mount measures 15mm wide (0.59 inches) rising 9mm from the finger. Metal & Hallmark: 18 karat yellow gold and platinum. The ring is hallmarked "18k" and "PL"

Category

Mid-20th Century Unknown Modern Cocktail Rings

Materials

Aquamarine, Diamond, White Diamond, 18k Gold, Yellow Gold, Platinum

Chaumet Joséphine Aigrette Platinum Diamond Wedding Band
Chaumet Joséphine Aigrette Platinum Diamond Wedding Band

Chaumet Joséphine Aigrette Platinum Diamond Wedding Band

By Chaumet

Located in Venice, CA

It is beautifully marked with the Chaumet hallmark, Chaumet, PL 750, 50 (for the French ring size), and the serial number 1477599. 

Category

21st Century and Contemporary French Contemporary Wedding Rings

Materials

Diamond, Platinum

Vintage Strong Design Platinum Art Deco Ring with Diamonds '1.75 Carat'
Vintage Strong Design Platinum Art Deco Ring with Diamonds '1.75 Carat'

Vintage Strong Design Platinum Art Deco Ring with Diamonds '1.75 Carat'

Located in Antwerp, BE

Birthstones: Diamond is the birthstone (or month stone) for April.    Hallmarks: "PL" indicating platinum   Dimensions: top of ring 1,07 cm (0,42 inch) x 1,74 cm (0,69 inch) Weight:...

Category

Vintage 1920s Belgian Art Deco Engagement Rings

Materials

Diamond, White Diamond, Platinum

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Hallmark Pl For Sale on 1stDibs

Surely you’ll find the exact hallmark pl you’re seeking on 1stDibs — we’ve got a vast assortment for sale. Frequently made of platinum, gold and 18k gold, this item was constructed with great care. Find an antique version now, or shop for 22 vintage or 5 modern creation for a more contemporary example of these cherished accessories. Making the right choice when shopping for a hallmark pl may mean carefully reviewing examples of this item dating from different eras — you can find an early iteration of this piece from the 20th Century and a newer version made as recently as the 21st Century, both of which have proven very popular over the years. Finding an appealing hallmark pl — no matter the origin — is easy, but Cartier each produced a popular version that is worth a look. A hallmark pl of any era or style can lend versatility to your look, but a version featuring diamond, from our inventory of 16, is particularly popular. Today, if you’re looking for an old european cut version of this piece and are unable to find the perfect match, our selection also includes round cut and baguette cut alternatives. If you’re browsing our inventory for a hallmark pl, you’ll find that many are available today for women, but there are still pieces to choose from for unisex and men.

How Much is a Hallmark Pl?

On average, a hallmark pl at 1stDibs sells for $3,000, while they’re typically $1,144 on the low end and $1,590,000 for the highest priced versions of this item.

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.