Rings in Many Different Hues

An 18 karat gold, diamond, emerald and sapphire ring.

An 18 karat gold, ruby, emerald and sapphire ring by Stefan Hafner.

A colored diamond and white diamond ring.

A group of four diamond and gem-set rings by Van Cleef & Arpels, including two Tiger's Eye and two Malachite rings.

Multi-gem ring by De Grisogono.

A yellow sapphire and multi-gem set ring.

A cabochon amethyst ring, a green tourmaline ring by Elizabeth Gage, London, 1990, and a citrine ring, London, 1967.

A collection of chunky quartz rings by Andy Lifschutz jewelry.

A diamond and ruby ring.

A diamond, ruby, and sapphire ring by Bulgari.

An "Emotion" ring by Fabergé, priced at USD 38,000.

An "Emotion" ring, with platinum, diamonds, sapphires, moonstones, opals and Paraiba topaz, by Fabergé.

Happy Valentine's Day!

 To celebrate Valentine's Day, here are some red and pink rings!

An 18 karat white gold, ruby and diamond ring.

A ruby and diamond ring by Van Cleef & Arpels, 1950's.

An 18 karat gold, diamond, and enamel ring by Elizabeth Gage.

An 18 karat gold, mystery-set ruby and diamond ring, by Van Cleef & Arpels.

An 18 karat gold, platinum, rubellite and diamond ring by Van Cleef & Arpels.

An 18 karat gold, ruby and diamond ring by Van Cleef & Arpels.

An 18 karat two-color gold, ruby and diamond ring by Buccellati.

An 18 karat white gold, fancy dark orangy brown diamond and diamond ring.

An 18 karat white gold, spessartite garnet, and diamond ring by Margherita Burgener.

An 18 karat white gold, spinel, moonstone, and diamond ring, by Michele della Valle.

A 20th century coral and diamond dress ring.

A ruby, diamond and gold ring by David Webb.

Blue Necklaces

An 18 karat gold, opal, cultured pearl, ruby and diamond necklace, Elizabeth Gage, London, 1988.

An 18 karat gold, platinum, turquoise and diamond pendant necklace by David Webb.

An agate and sapphire grape cluster necklace, Buccellati, 1960's.

An alexandrite and diamond necklace.

An antique diamond and sapphire necklace, late 19th century.

An aquamarine and diamond pendant, circa 1910.

An aquamarine and diamond necklace.

A diamond and blue sapphire heart necklace and earring set.

A sapphire and diamond necklace, circa 1850.

A cultured pearl, sapphire and diamond necklace and earrings set.

A crystal necklace with applied resin roses, Prada, $1,950.

An ornate diamond and sapphire necklace and earring set.

A diamond and sapphire sautoir necklace, 1930's.

A gold and pale blue cameo necklace, mid 19th century.

A resin and rhinestone cameo pendant on a velveted necklace, Lanvin, $1,985, and a ring by Wilfredo Rosado.