Platinum Signet Rings

For sale is this wonderful signet ring. This 18 Karat solid gold handmade stunner is a real sign of nobility and status which is perfect to wear with your favourite statement outfit....

A crystalline royal blue sapphire is may be the focal point of this midcentury masterpiece of a ring, but did you get a look at those diamonds on the shoulders? The baguette and tria...

Antique Signet Ring 18ct Gold & Platinum Circa 1920’s Antique elegance, modern intrigue… Crafted in rich 18ct gold with a platinum face, this 1920s Art Deco signet ring is ...

A luminous, highly translucent vivid apple green jadeite jade cabochon from Burma (Myanmar) that has been certified by jade authority, Mason Kay to be free from any treatment whatso...

Period: 1850 ca. Provenance: France Ring size: 12 Weight: 15,8 gr The ring, dating back to the mid-19th century, features a distinctive neo-Gothic mount, finely decorated with chiv...

ϟignet Ring - adorned with bezel set polished natural high grade Jade stone with flat surface polished to high gloss 15 mm x 13mm x 2.7mm deep / ca 11 ct European,ca. 1960s -1970s ....

This one-of-a-kind estate ring features a 5.57 carat cabochon of natural and untreated Burmese jadeite jade in luscious, translucent "Apple Green, a pair of brilliant white, eye-clea...

Bulgari Platinum Diamond Ring Old Mine Cut Center Monture Ring This substantial vintage Bulgari ring is made in platinum and centers on an approximately 2.20-carat old mine cut diam...

Alexandria’s Alexander the Great signet ring pairs solid platinum with natural fancy grayish-blue Argyle diamonds and three individually hand-carved agate cameos. The central white ...

Art Nouveau Bullet Cabochon Star Sapphire pinky ring set in platinum from the early 20th Century. 10mm star sapphire with elegant, scalloped setti...

Ring in 18 karat yellow gold, and platinum, dog head hallmark. Magnificent tank ring, it has in the center an antique brilliant- cut diamond supported by two antique- cut diamonds wi...

Ring in 18 karat yellow gold, eagle head hallmark and platinum, dog head hallmark. Beautiful tank ring in gold, it is decorated on its top with a line of 4 beautiful rose-cut diamonds of round and oval forms. Above and below, 3 gold gadroons give relief to the plate. Total weight of diamonds : 0.50 carat approximately. Height : 15,6 mm, width : 13,8, width of the ring at the base : 2,2 mm, thickness : 7,3 mm. Total weight of the jewel : 7,8 g approximately. US Size : 7 ; Free resize, please contact us. Authentic antique jewel - French work from the 1940's. Our opinion : An antique tank ring...

Platinum Star Sapphire Solitaire Ring A refined and elegant platinum ring featuring a captivating Star Sapphire, its ethereal blue hue exuding a soft, luminous glow. The smooth, dom...

IGI Certified Stunning Platinum Ring with 8.02 ct. Kashmir No Heat Sapphire, 3.75 ct. Diamonds An extraordinary investment-grade ring featuring an unheated 8.02-carat natural oval K...

Ring in 18 karat yellow gold, eagle head hallmark, and platinum, dog head hallmark. Voluminous tank ring, it is decorated in its center with an emerald-cut ruby, with two rows of ros...

A fine signed platinum, gold, & diamond ring. In .950 platinum with 18 karat yellow gold elements. With a central bezel-set 1.20± Ct diamond flanked on either side by bulky gold ac...

Ring size: 9.75 This brilliant 1960's platinum signet men's ring is a masterpiece of elegance and refinement, designed to make a bold statement. At its heart, an exquisite 2.15 cara...

The 1940s were not interested in restraint. After years of war and rationing, jewelry embraced volume, movement and optimism. Curves replaced rigid geometry. Gold became sculptural....

Designed as a yellow gold signet style ring centering a bezel set platinum tablet Carved to depict a Green Man with a face comprised of foliates Measuring 18.0 x 15.0 mm with grooved...

Well executed, hallmarked 1989, Sheffield guild, modern platinum and gold signet ring, likely custom made for an individual with any of the following family names: Abingdon, Cantrell...

Rossella Ugolini Platinum Sugarloaf Cabochon Lapis Lazuli Man Signet Ring. Available any size on order. This bold and refined design is part of the Castle Collection, inspired by the...

Here we have an outstanding signet ring from the world renowned French jewellery designer, Boucheron. This vintage piece has been crafted from platinum and features an oval faceted s...

This is a vintage signet ring crafted in 900 platinum. Circa 1980. The piece features rectangle black onyx. Weight: 10.75g Size: 18.75 (US 8.75) IMPORTANT: please ask about the ...

High end jewellery house Boucheron Paris have always had a way to make something so elegant that stands the test of time - of timeless eternally popular & sophisticated design, thi...

An exceptional vintage Cartier sapphire ring crafted in platinum and centered by an impressive approximately 5.00-carat natural blue sapp...

Platinum ring. This splendid Art Deco ring features the geometric lines typical of that time. This antique diamond ring is set with 7 brilliant cut modern and intermediary diamonds, the central diamond is larger in size. Total weight of diamonds: 1.50 carat approx - Estimated Quality: H.VVS Height: 1.01 cm, width: 2.2 cm, ring width at the base: 4.5 mm. Weight: approximately 9.8 g. US Size : 4,5, Free resize, please contact us. Authentic art deco diamond ring - Work of 1930s. Our opinion : A rare example of an all white Art...

First referenced in 1408, Thai Ruby once fulfilled 95 percent of the world's demand for this extremely rare and highly coveted gemstone. Ostensibly depleted since 2009, Thai Ruby is impossibly rare, making it incredibly collectable. The ring has a GIA certified 6 carat of VVS clarity Thai Ruby. On the flanks, the ring consists of 1.08 carat of D color IF...

This is a size 7.5 platinum signet ring with a single central old European cut diamond weighing approximately 0.84cts and is graded at SI1/I. Stone Info: 1x 0.84ct 6mm SI1/I Diamond...

Ring in platinum, dog's head hallmark. Square shaped, this superb Art Deco ring is adorned with a brilliant-cut diamond, surrounded by baguette-cut diamonds. Asymmetrically, a half-s...

The details for this classic style ring are listed below: Metal Quality: 14 karat yellow gold Complete Ring Weight: 4.43 grams Ring Size: 5.75 (US) Ring Measurements: The center top ...

This Faye Kim Platinum Faceted Oval Tanzanite Dome Ring showcases a stunning Tanzanite with a clean, understated design and smooth matte finish. The ring's chunky yet sleek style ena...

A modern-day take on the signet ring, Faye Kim's Platinum Diamond Hinged Chiclet Ring sparkles with bright, white burnished diamonds. With its flattering chiclet, or antique cushion,...

A simply extraordinary and utterly unique Jewel set in solid platinum and featuring a stunning Unheated Ruby from Mogok in Burma weighing an impressive 2.07ct. The beautifully made r...

Bold Retro Tank ring from the 1940s. A striking statement piece from the glamorous 1940s, this bold and sophisticated ring perfectly encapsulates the spirit of the era. Yellow gold ...

This exquisite Diamonds Malachite 14K Yellow Gold Pink Quartz Signet Ring features a blend of luxurious stones and fine craftsmanship. Set in 14K yellow gold, it showcases full-cut d...

Ring in platinum. A magnificent Art Deco signet ring featuring the geometric and symmetrical lines characteristic of its era. It is set with a brilliant-cut diamond in the center, fl...

Centering an oval shaped moonstone cabochon measuring 9.5 x 12.5 mm Translucent body with vivid blue adularescence Carved with an intaglio of the Greek goddess, Demeter Depicted trad...

The Heart Diamond 14K Yellow Gold Sweet Signet Ring is a beautifully crafted piece made with 14K yellow gold. Featuring a dazzling heart-shaped natural diamond of 0.20 CT, this ring ...

Ring in 18 karat yellow gold, eagle head hallmark, and platinum, dog head hallmark. Tank ring, it is decorated on the top of three brilliant- cut diamonds on geometric patterns. On both sides, a cord is placed before the departure of the ring. Weight of the central diamond : 0.45 carat approximately. Weight of the other diamonds : 0.15 carat approximately. Height : 15,5 mm, width : 12,1 mm approximately, thickness : 5,7 mm approximately, width of the ring at the base : 4,1 mm. Total weight of the jewel : 9,5 g approximately. US Size : 5,75 ; Free resize, please contact us. Antique jewel - French work of the 1940s. Our opinion : An antique tank ring...

Centering an oval shaped moonstone cabochon measuring 11.5 x 9.5 mm Translucent colorless body with vivid blue adularescence - flush set Carved with an intaglio of a woman in profile...

Bague Tank en or 18 carats (750 millièmes) et platine, sertie de deux diamants taille ancienne de 0,60 carat l'un et 0,65 carat pour le second.

Platinum Estate Green emerald and diamond ring, feature 2.15 Carat Emerald cut Emerald set with 2.05 Carat GIA Certified Emerald cut dia...

A unique ring crafted from approximately 0.950 platinum. This signet ring is set centrally with an "old" brilliant-cut diamond weighing approximately 0.42 ct. Fronts are adorned wi...

Ring in 18 karat rose gold and platinum. Important Art Deco ring, its signet-style setting is set on its top, in a square decoration, with a set of antique cushion-cut and rose-cut d...

Ring in platinum. This Art Deco signet ring features a wide, tapered band, and the setting is adorned with symmetrical geometric lines and 8/8-cut diamonds. At the center, an antique...

This platinum 3D Star of David ring by Merkaba is a dramatic sculptural statement, crafted as a three dimensional tetrahedron that rises approximate...

Ring in 18 karat yellow gold, eagle's head hallmark and platinum dog's head hallmark. Massive antique ring, it is set on its top with large platinum claws of 3 antique brilliant-cut ...

Ring in 18 karat yellow gold, eagle head hallmark, and platinum, dog head hallmark. A stunning tank ring; the top of this tank ring features two bridges, one set with 10 vintage-cut ...

A vintage platinum diamond ring featuring a tank design. The diamonds include round brilliant and single cuts, with three central diamonds set horizontally, flanked by smaller diamon...

This piece comes directly from the vault of Atlantic Diamond Company—a family-run fine jewelry house with nearly 50 years of history serving elite collectors, retailers, and dealers across the country. As the founder shifts focus to new ventures, he’s releasing a final selection of investment-grade gemstone and diamond pieces—offered exclusively to 1stDibs buyers at exceptional, below-market prices. This is not a liquidation or sale—it’s a one-time opportunity to acquire legacy-level jewelry at true insider value. Each piece is final; once sold, it will not be restocked.This incredible, vintage-inspired, brightly polished platinum tourmaline and diamond ring...

Platinum ring, grotesque hallmark. This Art Deco ring presents an asymmetrical and geometrical setting of antique and intermediate brilliant- cut diamonds. The profile is openwork on...

Stunning Australian Black Opal Oval Cabochon Halo design ring with Diamond accents. Ballerina Design. Stunning for any occasion - Perfect Engagement or Promise ring. Appraised at...

Dating to the 1880s, this Victorian era signet ring features a single old cut diamond at its centre. The 0.30 carat stone has a colour of H and clarity of SI1, and is star set in pla...

Ring in platinum ring, dog head hallmark. Superb art deco ring, it is adorned on its top with an intense blue sapphire set with 4 flat claws on an asymmetrical decoration, and should...

This exquisite David Webb ring is meticulously crafted from a combination of 18K gold and platinum. It boasts stunning adornments, including black enamel, a cabochon ruby, emerald, s...

This striking Blue Tourmaline Diamond 14K Yellow Gold Signet Ring is a luxurious piece set in 14K yellow gold. The ring is adorned with an array of carefully selected stones, includi...

Burmese red spinel and diamond dress ring. Set to centre with a cushion shape old cut natural unenhanced Burmese red spinel, in an open back rubover s...

The Diamond Starburst 14K Yellow Gold Signet Ring exudes regal elegance, with its pristine natural diamonds totaling 0.18CT, set in 14K yellow gold. This sophisticated design combine...

The Heart Shape Diamond 14K Yellow Gold Crest Signet Ring is an exquisite fusion of strength and refinement. Crafted from 14K gold, available in both yellow gold and white gold, this...

The Oval Shape 14K Yellow Gold Diamond Signet Ring features a brilliant natural diamond set in a polished 14k yellow gold band. Its oval-shape...