ART DECO PLATINUM AND DIAMOND LOW DOME RING, early 20th century.

SIGNED TIFFANY & CO. ART DECO PLATINUM, DIAMOND AND SAPPHIRE LOW DOME RING, early 20th century. Old European cut round diamond weighing approx 1.00 ct. Centered by two lines of six calibré-cut sapp

Art Deco Sapphire & Diamond Ring in Platinum , Early 20th century, platinum, American. Art Deco ring set with .60cttw diamonds I-G color and SI2-SI1 clarity and .50 cttw blue sapphires. Hallmark: Plat

Art Deco Diamond Filigree Ring, Early 20th century, Art Deco ring in platinum over 18k set with .17cttw diamonds (approximately H color and SI1 clarity). Hallmarked with Austrian assay mark for 14k. W

AN ART DECO RUBY AND DIAMOND DRESS RING, EARLY 20TH CENTURY in 18ct yellow gold and platinum, the rectangular face set with a step cut ruby accented by single cut diamonds, stamped 18ct Plat, size M /

EARLY 20TH C ART DECO DIAMOND SOLITAIRE RING: 18K pierced white gold ring centers an approx. .28 Old European cut diamond of VS clarity and near colorless color. Size 6.

DESCRIPTION: An Art Deco Platinum ring garnished by three round cut diamonds each weighing approx. .20 cts. Stamped along the inner band "Plat". Total Weight: 5.3 Grams (3.4dwt) CIRCA: Early-Mid 20th

Early 20th century. Set in a 14k white gold Tiffany Style setting, the pear shape diamond measures 9.46 x 6.35 x 4.55 mm with color grade of I-J and is a size 7. Accompanied by two wedding bands of th

This is an antique Continental European ladies wristwatch dating to the early 20th century. Rendered in fine platinum, this Art Deco watch is studded with full and single cut diamonds. VS clarity and

Item/Description: This exquisite antique set came to us from the same Estate. Early 20th Century. Transitional period: Art Nouveau- Art Deco. Filigree work. Panel bracelet set with 15 sparkly white di

Late 19th century. An antique art deco diamond and platinum dome style ring having European-cut diamond center stone (approximately 1.40 carats), flanked by filigree inset with single-cut diamonds (to

80% Platinum Art Nouveau style floral ring with one larger center diamond and ten surrounding diamonds. Produced by the William Kinscherf Company of New York City, ca. early - mid 20th century. Americ

Likely Mid 20th Century. Art Deco style, American. A square cut natural green emerald (approximately .75 CT) flanked by two round brilliant cut diamonds (each approx .3 CT) surrounded by sixteen round

DESCRIPTION: Platinum Art Deco ring with oval inset red tourmaline flanked by six accenting round diamonds. Marked "Plat" CIRCA: Early 20th Cent. ORIGIN: Continental DIMENSIONS: Size: 6.5" (Total Weig

A FINE ART DECO CEYLON NO HEAT SAPPHIRE, DIAMOND AND PEARL NECKLACE, EARLY 20TH CENTURY in platinum and yellow gold, set throughout with nine oval cut blue sapphires all totalling approximately 16.90

VAN CLEEF & ARPELS, AN EXQUISITE ART DECO ONYX AND DIAMOND FOB WATCH PENDANT NECKLACE, EARLY 20TH CENTURY in platinum, the hexagonal face with stylised Arabic numerals, within a border of rose cut

A THREE-PIECE BELAIS ART DECO SETTINGAmerican, early 20th century, 18k white gold. A couple's set including wedding ring with filigree mount absent diamond, together with two bands. size 7, weighing 6

An antique early 20th-century French Art Deco 14K white gold, sapphire, and diamonds two-piece jewelry set, a pair of drop earrings and a cocktail ring. The ring is set with an oval sapphire stone enc

Central OEC diamond, .72 ct. by formula, framed by diamond halo in platinum head, surrounding diamonds, approx. .70 ct. TW, on yellow gold hoop. Early 20th c. Unmarked. At least 14k yg. Size 6. 2.0 dw

American, early 20th century. Art Nouveau filigree platinum (tested) ring with .30 ct brilliant cut center diamond surrounded by smaller diamonds in flower motif. Size 5.

Set in platinum. From the first half of the 20th century, with a central sapphire surrounded by small sapphires and diamonds, unmarked. Dimensions: The central stone is approximately 0.75 carats, the

METAL: Platinum. MEASUREMENTS: Ring size - 7 1/2, ring top - 16mm wide. GEMSTONES: Diamonds - approx. 2.40ctw. MARKED: 10% irid. plat. WEIGHT: 6.8 grams.Gemstones have not been graded for color and cl

METAL: Platinum. MEASUREMENTS: Ring size 6.25, top is 10mm wide. GEMSTONES: Diamonds approx. 0.90-1.00ctw. TESTED: Plat. WEIGHT: 4.5 grams.Gemstones have not been graded for color and clarity ,and tes

Ring size 3, ring top is 18mm wide. Set with approx. 0.66ctw in diamonds. Ring had a repair. Tested plat. Weight - 3.7 grams.Gemstones have not been graded for color and clarity ,and tested for clarit

EDWARDIAN PLATINUM AND DIAMOND RINGEarly 20th CenturyFull-cut diamonds, approx. 5.0mm x 3.6mm and approx. 4.6mm x 3.0mm, flanked by four small diamonds. Maker’s mark “SRS”. Size 3&#1