Information on Diamonds, Pearls, Colored Stones &Minerals

 

 


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Jan 19, 2015

Julius Cohen Necklace - Bequest of Margaret McCormack Sokol

Necklace designed by New York based Julius Cohen Jeweler Inc. for one of their discerning and culturally sophisticated customers, Mrs Margaret McCormack Sokol, wife of Dr. Herman Sokol, renowned chemist involved in the U.S. Government's synthetic rubber program during World War II; one of the pioneers of the American antibiotic production program; Co-discoverer of the antibiotic tetracycline who also developed the basic processes for the manufacture of tetracycline

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Jan 01, 2015

Hazen Diamond Necklace - from the National Gem Collection of the Smithsonian Institution

A Statement Necklace of elaborate and intricate design by Harry Winston Inc. made up of diamonds and platinum only, but incorporating 325 diamonds of different cutting styles such as pear, baguette, round-brilliant and emerald cuts in four rows, yet versatile being able to be worn as a single-row diamond necklace or as an elaborate 4-row dramatic fringe necklace, gifted by Lita Annenberg Hazen to Smithsonian's NMNH in 1979.

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Dec 28, 2014

Hall Sapphire and Diamond Necklace - Jewels from the National Gem&Jewelry Collection

A blue sapphire and diamond necklace designed by Harry Winston Inc. featuring 36 cushion-cut Ceylon/Sri Lanka blue sapphires, accented by 435 colorless diamonds, gifted by Evelyn Annenberg Jaffe Hall to the NMNH of the Smithsonian Institution in 1979

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Dec 24, 2014

Hooker Starburst-Cut Yellow Diamond Jewelry Suite

Gifted by the Late Mrs. Janet Annenberg Hooker to the Smithsonian's NMNH in 1994, consiting of a rivière necklace set with 50 starburst-cut fancy yellow diamonds, a matching pair of earclips and a yellow-gold ring also set with starburst-cut yellow diamonds

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Dec 22, 2014

Elena Lupescu's Natural Pearl and Diamond Drop Earrings

The drop earrings designed in the Belle Epoque period was purchased by Carol II during his temporary exile in Europe between 1925 and 1930 and presented to his mistress Elena Lupescu as a token of his love and affection for her

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Jul 10, 2014

Largest Natural Near-Spherical Saltwater Nacreous Pearl in the World

The 33.147-carat, natural, near-spherical, white, saltwater, nacreous pearl featured at Woolley & Wallis auction held at its Salisbury Salerooms on May 1st, 2014, and fetched a staggering £811,000 equivalent to US$ 1,368,075

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Jul 04, 2014

Sultan Ahmad Shah Qajar Fancy Yellow Diamond Brooch

the centerpiece of the brooch is a 74.53-carat, SI-clarity, cushion-cut, fancy yellow diamond of South African origin

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May 09, 2014

Gemstone Geographic/Country-of-Origin Determination with Special Reference to Blue Sapphires

Criteria used for determining country-of-origin of blue sapphires include identification of inclusions, the use of optical properties, growth characteristics and analysis of chemical and trace element composition by advanced techniques.

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Apr 18, 2014

Graff Vivid Yellow Diamond

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Mar 11, 2014

List of Pearls/Pearl Jewelry/Pearl Settings that Performed Exceptionally Well at Public Auctions

This webpage includes an important table listing famous pearls/pearl jewelry/pearl settings that performed exceptionally well at public auctions, beginning from1979 to 2013.

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