Pair of Multicolored Diamond Button Earrings. Photo: Courtesy Doyle New York 

18 kt. blackened gold, 110 diamonds ap. 20.50 cts., ap. 11.7 dwt. Estimate $8,000-12,000

Diamonds: light yellow, medium brown, cognac, yellowish-brown, deep yellow, mostly VS, several SI, several Imp., brilliant. Good condition. Posts and clip-backs. Diameter 1".

Gold, Platinum, Emerald and Yellow Diamond Flag Brooch, Cartier. Photo: Courtesy Doyle New York 

The stylized flag composed of alternating rows of 34 square-cut and fancy-shaped emeralds and 28 yellow single-cut diamonds, signed Cartier, circa 1930, approximately 6 dwt. Estimate $5,000-7,000

Emeralds: bright green, cleanish to moderately included, one very included, lively. Diamonds: deep yellow to deep brownish-yellow, VS-SI, all single-cuts except for one round brilliant. Good condition. 1 1/8 x 1 3/16".

Two-Color Gold, Diamond and Yellow Diamond Crossover Ring. Photo: Courtesy Doyle New York 

107 diamonds ap. 7.30 cts., ap. 11.5 dwt. Size 8 1/4. Estimate $3,000-4,000

Diamonds: H-I-VS. Yellow diamonds: deep brownish-yellow to deep yellow, VS. Good condition.

Estate of Friedl Summerer  

White Gold, Diamond and Yellow Diamond Ring. Photo: Courtesy Doyle New York 

18 kt., 137 diamonds ap. 5.75 cts., ap. 10.5 dwt. Size 7 3/4. Estimate $2,500-3,500

Diamonds: G-H-VS. Yellow diamonds: bright yellow, VS-SI. Good condition. Well-made. 7/8 x 1 1/4",

Pair of White Gold, Yellow Diamond and Diamond Pendant-Earrings. Photo: Courtesy Doyle New York 

18 kt., 6 marquise-shaped yellow diamonds ap. 1.00 ct., ap. 4 dwt. Estimate $2,000-3,000

Yellow diamonds: bright yellow, SI. Round diamonds: J-K-SI, face up white. Good condition. Posts. Length 1 3/4".

Gold, Yellow Diamond and Diamond Leaf Clip-Brooch. Photo: Courtesy Doyle New York 

18 kt., diamonds ap. 4.20 cts., ap. 10 dwt. Estimate $2,000-3,000

Yellow diamonds: overall medium to deep yellow, several lightl yellow, VS-SI. Center diamond: H-I-SI. Small round diamonds set on one side. Good condition. 1 11/16 x 1 1/2".

Gold, Cabochon Pink Tourmaline, Yellow Diamond and Emerald Fox Pendant with Chain. Photo: Courtesy Doyle New York 

18 kt., one cabochon pink tourmaline ap. 6.85 cts., diamonds ap. 1.50 cts., ap. 9.3 dwt. Length 18 inches. Estimate $1,200-1,800

Pink tourmaline: gold-backed, pinkish-orange color, good polish.] Good condition. 1 5/8 x 13/16".

Doyle New York. Important Estate Jewelry - Wednesday, September 29 at 10am www.doylenewyork.com