Sky Blue Brooches

A 14 karat blackened gold, blue topaz, moonstone, hardstone and diamond brooch by Kung Tsung-Tzu.

An 18 kart gold, natural pearl, sapphire, diamond and plique-à-jour enamel brooch by Marcus & Co., circa 1897.

An 18 karat gold, platinum, aquamarine, and diamond pendant-brooch by F.J. Cooper.

An 18 karat gold, platinum, sapphire and diamond brooch by Schlumberger for Tiffany & Co., France, circa 1960.

An 18 karat gold, sapphire, and diamond clip-brooch by Van Cleef & Arpels, circa 1965.

An 18 karat gold, sapphire and diamond pendant-brooch by Tiffany & Co., circa 1910.

An 18 karat gold, sapphire, ruby and diamond brooch, France.

An 18 karat white gold, tanzanite, sapphire and diamond brooch, by Sifen Chang.

A diamond and sapphire brooch.

A late 19th century sapphire and diamond crescent brooch.

A multi-gem and simulated turquoise brooch by David Webb, 1965.

A purple sapphire, diamond and pearl brooch.

Elegant Diamond and Pearl Earrings

A pair of diamond and natural pearl earrings.

A pair of natural pearl, cultured pearl, enamel and diamond ear clips, late 19th century.

A pair of 18 karat gold, cultured pearl, and diamond earrings, 1988.

A pair of 18 karat gold, cultured pearl, and diamond pendant earclips, by Van Cleef & Arpels.

A pair of 18 karat, cultured pearl, and diamond earrings, by Sifen Chang.

A pair of 14 karat, cultured pearl, and diamond pearl and diamond pendant-earclips by Van Cleef & Arpels.

A pair of cultured pearl and diamond earclips by David Webb.

A pair of cultured pearl and diamond earclips by David Webb.

A pair of cultured pearl and diamond ear pendants.

A pair of cultured pearl and diamond ear pendants.

A pair of cultured pearl and diamond ear pendants by David Webb. 

A pair of cultured and diamond earrings.

A pair of natural pearl and diamond earrings.

A pair of natural pearl and diamond ear pendants by David Webb.

More Magnificent Opals

An art nouveau 18 karat gold, black opal, and enamel pendant, circa 1900.

An 18 karat gold, diamond, opal and enamel locket bracelet.

An 18 karat two color gold, opal, ruby, sapphire and emerald pendant necklace by Buccellati.

An 18 karat white gold, green opal and diamond ring and earring set, by Sifen Chang.

An opal and diamond brooch from 1890.

An early 20th century opal, diamond and sapphire brooch by Dreicer.

An art nouveau gold, platinum, opal, diamond and plique-a-jour enamel pendant by Paul Robin, France, circa 1900.

A black opal and diamond pendant necklace, early 20th century.

A black opal and diamond pendant necklace and ring.

A diamond and fire opal pendant, circa 1910.

An art nouveau enamel, opal, diamond and enamel pendant by Guillemin Freres, circa 1900.

A fire opal and diamond parure made up of earrings, pendant, ring and bracelet.

Fire opal and diamond bracelet and earrings, circa 1930's.

A fire opal and enamel brooch, circa 1900.

Opals are the Best!

18 karat blackened gold, fire opal and diamond ring by Sifen Chang.

18 karat blackened gold, jelly fire opal, and diamond ring by Sifen Chang.

A black opal and diamond ring, 1920's.

A fire opal, onyx and diamond ring by Wallace Chan.

A large black opal and blue and green gem-set ring by Samuel Getz.

A rainbow opal and diamond ring by Meister.