A magnificent pair of Retro leaf-shaped earrings and a matching brooch by Cartier. The leaves are worked in 18K yellow gold and are exquisitely detailed with delicate veining against a softly bloomed matte finish. The stems are worked in palladium, a metal from the platinum group that was used during World War II when platinum was banned from use in jewelry. The stems are bead-set with round single- and brilliant-cut diamonds...

An extremely rare 18K yellow gold bracelet in the Sputnik design by H Stern. The domes are bezel-set with round amethysts, aquamarines, citrines, green tourmalines, pink tourmalines and garnets. The design was created in the 1950s to showcase the range of colored gemstones available from Stern's mines in Brazil. It later came to be called "Sputnik" because of its resemblance to the spiky Soviet satellite launched in 1957...

A fine modernist 18K yellow gold ring by Burle Marx set with an intricately carved amethyst in the “forma livre” (free form) style. Haroldo Burle Marx was particularly known for his use of large gemstones, often fashioned by carving or tumbling rather than faceting, a technique he invented in 1948. The color of the amethyst is deep purple and is nicely even throughout the stone. The gold surfaces are decorated with the fine florentined engraving typical of Marx’s pieces...

A rare pair of 18K yellow gold earclips in the Sputnik style by H Stern. The domes are bezel-set with round amethysts, citrines, aquamarines, green and pink tourmalines, and garnets. This design was created in the 1950s to highlight the range of colored gemstones available from the mines of Stern's native Brazil. It later came to be called "Sputnik" for its resemblance to the spiky Soviet satellite launched in 1957...

An elegant pair of 18K yellow gold earrings by acclaimed designer Angela Cummings. The simple elongated oval is enhance with a center bulge that echos the oval outline. The surfaces have a matte finish for a warm glow. The style is very versatile and can be worn with jeans as easily as a cocktail dress. The backs retain their original omega clips and are marked “1987 Cummings 18K”.

Origin: America, 1987. Condition: excellent. Size: 1-3/16” x 7/8”. Weight: 20.8 grams.

Ca 1940 A signed, solid gold piece by Preformed Parts, manufacturer of Tiffany and Cartier jewelry. George Schuler design. The piece weighs a substantial 13.2 grams and measures 1-1/4" x 2". Similar designs by both companies may be found on the web.

A magnificent 18K gold, sapphire, emerald and ruby dome ring by David Webb. The textured gold is accented with rows of ropework bands punctuated with collet-set cabochon gemstones. The rich, intense colors of the stones beautifully accent the intricate gold. The extra-wide shank keeps this heavy statement ring from turning on the finger. The interior is signed "Webb 18K."

Origin: America, ca. 1970. Condition: excellent. Dimensions: 15/16" wide, tapering to 5/8" at the back...

Vintage 18K yellow gold post-back earrings in the "Scribble" design by Paloma Picasso for Tiffany & Co. The design is sometimes called "Graffiti" or "Squiggle." The earrings were made in various sizes, with this pair being the most delicate and wearable. The backs are dated 1983 and are marked by Tiffany and Picasso.

• Origin: America, ca. 1983
• Excellent condition
• Dimensions: 5/8" x 1-7/16"
• Weight: 4.9 grams

An extraordinarily fine antique 18K yellow gold ring by Tiffany & Co. set with a mixed cushion cut Burmese blue sapphire surrounded by old mine cut diamonds. All the gems are of the finest quality. The sapphire has been certified by the American Gemological Laboratories (see the following paragraph). The diamonds, ranging in size from approximately .22 carat to .29 carat each, are estimated at G/H color and SI to VVS2 clarity...

An elegant pair of 18K yellow gold earrings with lapis lazuli inlay by Angela Cummings. The designer pioneered modern hardstone mosaic techniques when she was a lead designer at Tiffany & Co. She began working at Tiffany in 1967, but was not allowed to sign her own designs until 1974. These earrings are definitely her design, but are unsigned, indicating that they date from the period 1967-74. The earrings are marked “T&Co 18K”.

Origin: America, 1967-74. Size: 7/8” x 3/4"...

An exceptional and extremely rare 14K yellow gold, amethyst and pearl ring by Edward Everett Oakes. The crown is fashioned as a cluster of oak leaves and acorns surrounding two round amethysts and two half-pearls in collet settings. The amethysts are graded as medium-dark strong purple (P 6/6); with excellent cut and Type I eye-clean clarity. The pearls have nice luster and creamy body color.

Edward Everette Oakes (1891-1960) was perhaps the foremost Arts & Crafts jeweler in America...

An elegant pair of 18K yellow gold earrings with mother-of-pearl inlay by Angela Cummings. The designer pioneered modern hardstone mosaic techniques when she was still lead designer at Tiffany & Co. After establishing her own luxury boutique, she continued to make similar designs under her own name. The earrings are marked “Cummings 18K”.

Origin: America, 1984-2003. Size: 1” x 3/4". Weight: 15.7 grams.

A very attractive 18K yellow gold ring set with an amethyst by the famed mid-century Brazilian designer Haroldo Burle Marx. Burle Marx is well-known for his free form designs, but his collaborations with his brother, the landscape architect Roberto Burle Marx, had a much more linear, abstract feel as in this piece. The amethyst at the center is of the very finest quality, with intensely purple color and excellent clarity. The gold is completed with the finely worked florentined finish typical...

Elegant 14K yellow gold and pearl brooch in a modern bouquet design. The four pearl "flowers" are set atop golden stems that are tied with a swirling gold ribbon. Each pearl is 5.5 mm and has the wonderful white body color with silvery overtones characteristic if Mikimoto pearls. The nacre is thick and the skins are very smooth. The back is marked with Mikimoto's hallmark and "K14".

Origin: Japan, circa 1970. Condition: excellent, all original. Size: 1-5/8" x 1-1/8". Weight: 6.0 grams.

An elegant pair of classic Tiffany & Co. 18K yellow gold hoop earrings in a braided, twisted rope motif. The backs have posts with omega clips. The interior of each hoop is marked "Tiffany & Co. 1995 750".

Origin: America, 1995

Condition: excellent

Dimensions: 1" diameter, 1/4" width

Weight: 11.2 grams

An unusual vintage 14K gold equestrian keychain by Tiffany & Co. The chain has a fob on either end, one in the form of a horseshoe and the other in the form of a fully three-dimensions horse head. The head is nicely detailed and sparkles with a pair of bright ruby eyes. The rubies, though small, have very fine bright color. The back of the horseshoe is marked "Tiffany & Co. 14K."

Keys are added by holding the chain against one side of the horseshoe and slipping on the key. When the chain ...

A very nice 18K yellow gold Sputnik style ring by H Stern. The dome is bezel-set with round citrines, amethysts, green tourmalines, pink tourmalines, garnets and aquamarines. This design was created in the 1950s to highlight the range of colored gemstones available from the mines of the jeweler’s native Brazil. It later came to be known as “Sputnik” for its resemblance to the spiky Soviet satellite lanched in 1957. Each ring has a unique appearance that depends on the particular select...

A large 18K yellow gold Sputnik pendant by H Stern. The dome is bezel-set with round amethysts, citrines, aquamarines, garnets, green tourmalines, and most unusually, a very rare blue indicolite tourmaline and an even rarer neon green tourmaline with paraiba-like coloring. The Sputnik design was created in the 1950s to showcase the variety of colored gemstones available from Stern's Brazilian ines. It later came to be called "Sputnik" for its resemblance to the spike Soviet satellite launched in...