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Dr. Edward E. David, Jr. was Science Advisor to President Nixon and Director of the White House Office of Science and Technology from 1970 to 1973.

He has also served as President of Exxon Research and Engineering Company from 1977 to 1986, and as Executive Director of Bell Telephone Laboratories from 1950 to 1970.  He is a past president of the American Association for the Advancement of Science, and was the U.S. representative to the NATO Science Committee for 16 years. 

He received his doctorate in engineering from MIT. 

In 1993 he sold a large portion of his "first collection" to the Houston Museum of Natural Science, where it forms the core of a major hall. He then began building yet another major collection - his "second collection," which he also sold in recent years. The specimens on this page are from his second collection. Although in his eighties, Dr. David, as you would expect, is now building yet another collection.

I have always admired Dr. David's eye for aesthetics and I am happy to present some of the fine specimens from his second collection. And, there will be more from his collection in a future update.

A large crystal of Microcline var. Amazonite showing distinct twinning planes.
Beautiful, well formed, complex crystals of rich blue Lazurite on Calcite matrix. excellent condition. You want find many fine large plates like this one from Dr. Edward David's collection. The largest crystal measures 4 x 3.5 cm.
Even better in person !!!
A large plate of numerous lustrous, grass green Pyromorphite crystals covering a nicely contrasting black matrix. In excellent condition.
Gemmy, light blue, hexagonal Aquamarine crystals to 2 x 2.5 cm on silvery Muscovite matrix with a nicely accenting pink Apatite crystal. No significant damage.
Absolutely stunning coverage of gemmy, double terminated Fluorapophyllite crystals with some white Stilbite on a Choral (fine Quartz) covered matrix. In super condition. This one ranks on the upper echelon of Indian specimens.
Large cluster of glassy Calcite crystals from the Bigrigg Mine in England.
Well crystallized, silvery Galena on matrix from the now closed Turt Mine in Romania. 
Excellent specimen of Hemimorphite from the Sterling Hill, which was the source for most of the local (New Jersey) Hemimorphite. The bulk of the material was found in the old Passaic and Noble Mines. On many specimens the terminations of the Hemimorphite crystals are serrated and closely-spaced. Collectively the crystals resemble aggregates of maggots, from which rose the old miner’s name, "maggot-ore". These specimens are among the best Hemimorphite specimens found anywhere and are present in most systematic collections.  Most are white, lustrous, and very attractive and some have interesting depositional stains. The occurrence was mined extensively in the 1870’s, and Hemimorphite was at that time a chief ore of zinc from Sterling Hill.

Cluster of white albite crystals heavily coated with a green Chlorite mineral.
Super specimen of rich green, lustrous Adamite in rare botryoidal form on Limonite. In excellent condition.
Fine Tsumeb Mine specimen of Malachite that has replaced a complex cluster of Azurite Crystals.
Nice, sky blue, translucent, pair of Celestite crystals on a plate of Calcite crystals.
Large twinned crystal of lustrous orange Scheelite with a minor piece of Muscovite.
Large Geode of essentially solid Dioptase with it's cavity filled with pristine, super gemmy, Dioptase crystals to 1 cm+. Much, much better in person !!
Mass of microcrystals of very lustrous, bright salmon-pink Poldervaartite on matrix from the N 'Chwaning Mine.
A very nice example of the sought after "Disco Ball" configuration of cubic Fluorapophyllite crystals perched on a plate of cream colored Stilbite.
A well formed ball of white Barite crystals perched on a mass of purple Fluorite crystals from the famous Elmwood Mine.
A single 1.75 x 1.5 cm, glassy crystal of Yugawaralite sits in the center of a Quartz lined vug.

Yugawaralite is an extremely rare member of the Zeolite group of minerals.
Cluster of Rhodocrosite rhombs (to 1x1.5 cm) from the famous Sweet Home Mine. 
Very nice plate of blood red, hexagonal crystals of Vanadinite on matrix.
Large plate of Calcite rhombs with edges coated with golden microcrystals of Chalcopyrite.
Large cluster of sharp Stibnite crystals from - not China or not Romania, but from Nevada. Manhattan, Nevada Stibnites are considered to be the finest US Stibnites.
Gemmy, very lustrous cluster of Chrysoberyl crystals.
Click here for source of photo
Scheelite was first described in 1821 for an occurrence in Mount Bispbergs klack, Säter, Dalarna, Sweden, and named for Carl Wilhelm Scheele (1742-1786).
Click here for information on Dioptase.
Click here for information on Uvite.
Rich cluster of gemmy, green Uvite Tourmaline crystals with some associated Magnesite crystals.
Specimens from the Edward E. David Collection
Superb, large doubly terminated light blue crystal (14 x 6.5 cm) on Muscovite with additional smaller Beryl crystals. Also some minor pink Apatite crystals on the backside.
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Edward David
Lazurite Crystals on Calcite Matrix
Ladjuar Medam (Lajur Madan), Sar-e Sang District, Koksha Valley, Badakhshan Province, Afghanistan
11.5 x 10 x 6 cm
Ex-Edward E. David Collection
Pyromorphite Crystals on Black Matrix
Guilin Prefecture, Guangxi Zhuang Autonomous Region, China
13 x 10 x 4.5 cm
Ex-Edward E. David Collection
Beryl var. Aquamarine Crystals with Apatite Crystal on Muscovite
Chumar Bakhoor, Nagar, Northern Areas, Pakistan
14.5 x 11.5 x 5 cm
Ex-Edward E. David Collection
Fluorapophyllite Crystals with Stilbite on Matrix               
Pune, Maharashtra, India
17.5 x 12 x 4.5 cm
Ex-Edward E. David Collection
Calcite Crystal Cluster
Bigrigg Mine, Bigrigg, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
16.5 x 10.5 x 6.5 cm
Ex-Edward E. David Collection; Ex-Larry Conklin Collection
Galena Crystals on Matrix
Turt Mine (Ghezuri Mine), Turt, Satu Mare, Maramures County, Romania
12 x 10.5 x 7 cm
Ex-Edward E. David Collection
Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA
9.5 x 7.5 x 4 cm
Ex-Edward E. David Collection
Albite var. Pericline Crystals Coated with Chlorite
Acushnet, Bristol County, MA, USA
8 x 6 x 2.5 cm
Ex-Edward E. David Collection
Adamite on Limonite
Mina Ojuela, Mapimi, Durango, Mexico
12.5 x 7 x 4.5 cm
Ex-Edward E. David Collection; Ex-Laura Thompson Collection
Malachite ps. after Azurite
Tsumeb Mine, Tsumeb, Otjikoto (Oshikoto) Region, Namibia
9.5 x 8 x 4 cm
Ex-Edward E. David Collection
Celestite Imbedded in Calcite
South Rockwood, Michigan, USA
10 x 6 x 2 cm
Ex-Edward E. David Collection
Scheelite Crystal
Ping Wu, Xuebaoding, Schuan Province, China
7 x 6 x 5.25 cm
Ex-Edward E. David Collection
Geode Lined with Dioptase Crystals
Brazzaville (Renéville; Djoué), Brazzaville Department, Republic of Congo (Brazzaville)
14.5 x 11.5 x 9 cm
Ex-Edward E. David Collection
Poldervaartite (Olmiite)
N'Chwaning #2 Mine, Kurman, Northern Cape Province, South Africa
7 x 5 x 1 cm
Ex-Edward E. David Collection
Fluorapophyllite "Disco Ball" Cluster on Stilbite
Ahmadnagar District, Maharashtra, India
10 x 7 x 5 cm
Ex-Edward E. David Collection; Ex-Bill Butkowski Collection
Fluorite Crystals with Dolomite Ball
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee, USA
9.5 x 8 x 6 cm
Ex-Edward E. David Collection; Ex-Stephen Neely Collection
Yugawaralite Crystal in Vug
Jalgaon, Maharashtra, India
10.5 x 6 x 4.5 cm
 Ex-Edward E. David Collection
Green Tourmaline (Uvite) with Magnesite Crystals
Uvite, Brumado, Bahia, Brazil
7.5 x 5 x 3 cm
Ex-Edward David Collection
Rhodocrosite Crystal Cluster
Hedgehog Pocket, Sweet Home Mine, Alma, Colorado, USA
5 x 5 x 3 cm
Ex-Edward E. David Collection
Beryl var. Aquamarine Crystals on Muscovite
Chumar Bokhoor near Nagar, Hunza valley, Northern Area, Pakistan
15 x 12.5 x 8 cm
Ex-Edward E. David Collection
Vanadinite Crystals on Matrix
Acil Mine, Mibladen, Morocco
9.5 x 7 x 3.5 cm
Ex-Edward E. David Collection
Calcite Crystal Cluster with Chalcopyrite
Chenzhou Prefecture, Hunan Province, China
20.5 x 14 x 7.5 cm
Ex-Edward E. David Collection
Stibnite Crystal Cluster
White Caps Mine, Manhattan, Manhattan District, Nye County, Nevada, USA
13.5 x 9.5 x 7 cm
Ex-Edward E. David Collection
Microcline var. Amazonite (Feldspar)
Kenticha Mine, Kenticha Pegmatite Field, Sidamo-Borana Province, Ethiopia
12 x 9.5 x 6.5 cm
Ex-Edward E. David Collection
Chrysoberyl Crystal Cluster
Pancas, Espirito Santo, Brazil
6 x 5 x 3.5 cm
Ex-Edward E. David Collection
Illinois Fluorites