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Edward David
Illinois Fluorites
Quartz var. Amethyst Crystal Cluster
Magaliesberg Mts., Pretoria, Gauteng Province, South Africa
16 x 7 x 6 cm
Quartz var. Amethyst Slice
Artigas, Uruguay
9 x 4.5 x 0.5 cm
Quartz Crystal Cluster Colored by Inclusions of Groutite (Rare) and with Barite
Mibladen Mining District, Midelt Province, Drâa-Tafilalet Region, Morocco
14.5 x 11 x 8.5 cm
Vanadinite Crystals with Barite on Matrix
Mibladen Mining District, Midelt Province, Drâa-Tafilalet Region, Morocco
9 x 6.6 x 2.6 cm

Cactus (Spirit) Quartz "Sunshine Crystal" Cluster
Boekenhouthoek, Mkobola, Mpumulanga Province, South Africa
8 x 7 x 5 cm
Cactus (Spirit) Quartz var. Amethyst Crystal Cluster
8 x 5.5 x 5 cm
Pink Amethyst Crystals in Geode
Patagonia, Argentina
8.5 x 7 x 3.5 cm
Purple Fluorite Crystal
Cave-in- Rock District, Hardin County, Illinois
6.5 x 4 x 3.5 cm
Bi-Colored Fluorite Crystal Cluster
Annabel Lee Mine, Hardin County, Illinois, USA
11 x 7 x 3 cm
Fluorite Crystal Cluster
Denton Mine, Cave-in-Rock District, Illinois, USA
7.5 x 4 x 2 cm
Sphalerite Crystals with Calcite
Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia 
7 x 5 x 4 cm

Purple Fluorite Crystals on on Substrate
Denton Mine, Cave-in-Rock District, Illinois, USA
9 x 7.5 x 7 cm
Scolecite Crystals in Heulandite Lined Vug
Nasik, Maharashtra, India
11 x 7 x 7 cm
Rutile Crystals on Hematite
Novo Horizonte, Bahia, Brazil
 6 x 4.5 x 0.6 cm
Rutile Crystals on Hematite
Novo Horizonte, Bahia, Brazil
5 x 4 x 0.6 cm
Rutile Crystals on Hematite
Novo Horizonte, Bahia, Brazil
5 x 5 x 3 cm
Fluorite Crystal Cluster
Okorusu Mine, Otjiwarongo, Otjozondjupa Region, Namibia, Africa
10.5 x 6.5 x 2.5 cm
Gypsum var. Selenite Crystal Cluster
Red River Floodway, Winnipeg, Manitoba, Canada
9.1 x 7.8 x 6.1 cm
Calcite Crystals on Matrix
Tieshan Fe-Cu Deposit, Tieshan District, huangshi, Hubei, China
14.8 x 14.3 x 9.5 cm
A beautiful intergrown sculptural network of individual hexagonal Calcite crystals aesthetically displayed on a Limestone matrix. The Calcite crystals, measuring to 8 cm, span 180 degrees across the front of the specimen in a pinwheel fashion around the matrix. Each crystal is coated with yellowish brown iron staining but has a clear translucent glassy window pane center. In fine condition.
A bright and quite colorful gemmy golden Selenite cluster. In fine condition.
Barite with Aragonite
Barbusi, Carbonia, Carbonia-Iglesias Province, Sardinia, Italy
9.7 x 8.2 x 2.9 cm
Ex-Kay Robertson Collection

Large and complex. this crystal of Barite is an exceptional single for the locality. The color is a moss green, with a clarity that varies from translucent to slightly gemmy. It is adorned with two generations of Aragonite of different habitate and appearance. Aesthetic, dramatic and in very fine condition for the size.
Fluorite Crystals on Sphalerite
Gordonsville Mine, Smith County, Tennessee, USA
8.5 x 7.5 x 4 cm
Spessartinr Garnets with Smoky Quartz on Microcline
Tongbei Area, Fujian Province, China
10 x 7.5 x 5 cm
Calcite Crystal Cluster with Duftite
Tsumeb Mine, Tsumeb, Namibia
14.5 x 9 x 5 cm
A aesthetic cluster of numerous, translucent Calcite rhombs on a thin matrix covered with nicely contrasting green Duftite. No damage.
Stilbite-(Ca) with Fluoraphyllite-(K) on a Chalcedony "Finger"
Jalgaon District, Maharashtra, India
9 x 6.9 x 4.3 cm
Ex-Dr.Stephen Smale Collection

A beautiful and highly aesthetic specimen from the famous Jalgaon District featuring attractive pastel salmon colored "sword" shaped bladed crystals of Stilbite measuring up to 3.3 cm associated with highly vitreous, razor sharp, prismatic crystals of green to colorless Fluoraphyllite, which are sitting on a "finger" shaped protrusion coated with tiny crystalline snow white Chalcedony on minor matrix. In excellent condition.
A aesthetic cluster of sparkling Spirit Quartz with great luster and a vibrant lemon yellow color due to iron oxide on matrix. In very good condition.
Another fine cluster Spirit Quartz var. Amethyst with associated yellow to orange variety of Spirit Quarts on matrix. Very aesthetic and in fine condition.
A beautiful cluster of gemmy, lustrous purple Fluorite crystals "still attached" to the natural substrate. In fine condition.
A nice specimen of well formed, jet black Sphalerite crystals in association with Calcite. In fine condition. Even better in person !!
A very aesthetic vug lined with salmon colored Heulandite and filled with numerous fine glassy filaments of Scolecite. In fine condition.
A pretty Geode lined with Pink Amethyst. What makes Pink amethyst special, aside from its beautiful color, is that it is a fairly recent discovery in the world of crystals. It draws its pink coloring from inclusions of Hematite. In fine condition.
A pretty translucent, purple Fluorite crystal with darker purple outer zoning and nice luster. In fine condition.
An aesthetic Fluorite crystal cluster with very light purple colored crystals with outer darker purple zoning overlaying yellow Fluorite crystals. In fine condition.
Another nice Fluorite crystal cluster with light orange to yellow color and nice luster. In fine condition.
A very attractive specimen of golden, lustrous Rutile crystals arising from Hematite. In very good condition and not as delicate as many of these specimens.

Another attractive specimen of golden, lustrous Rutile crystals arising from Hematite. In very good condition and not as delicate as many of these specimens.
 An excellent specimen of golden Rutile crystals exploding in all directions from Hematite. Very aesthetic and in fine condition.
Yellow Fluorite Fluorite Crystals on Quartz
Mahodari, Sinnar, Nashik District, Maharashtra, India
8 x 6 x 4 cm
Striking, pristine, translucent, yellow-green fluorite balls are dramatically perched atop a matrix of Quartz. The impressive balls have a beautiful warm glow. Botryoidal fluorite is rare in nature, coming from only a few locales. In fine condition.
A fine specimen of Okorusu Fluorite featuring lustrous, very gemmy, intense blue-green colored cuboctahedral crystals measuring to 3 cm across on edge. When backlit the color really comes through and you can see some "phantom" color zoning. In fine condition.
An attractive specimen of gemmy to translucent purple Fluorite crystals adorning a lustrous matrix of Sphalerite. In very good condition.
Chrysocolla on Quartz on Matrix
Tenke-Fungurume Area, Lualaba, D.R. Congo, Africa
8.5 x 4.5 x 4.5 cm
Ex-M.C. Brown Collection
Alluring sparkling blue Chrysocolla on Quartz on Limonite matrix. Very aesthetic and in very good condition. Even better in person.
Top Side
A nice affordable specimen of Quartz var. Amethyst (Cactus Quartz). In very good condition.
A pretty slice of Quartz var. Amethyst. In very good condition.
A rather specimen of Quartz with inclusions of Groutite a manganese oxide mineral with formula Mn 3+ O(OH). It is a member of the diaspore group and is trimorphous with manganite and feitknechtite. Also partially trimmed with Barite. In very good condition.
Side View
A nice specimen of blood red hexagonal crystals of Vanadinite over Barite on matrix. Coverage on both sides. In very good condition.
Back Side
An excellent specimen of Smoky Quartz and Spessartine Garnets on Microcline. In fine condition.
Fluorite, Sphalerite and Chalcpyrite on Quartz Matrix
W.L. Davis Deardorff Mine, Cave-in-Rock Sub-District, Hardin County, Illinois, USA
15 x 11 x 3.5 cm
Ex-M.C. Brown Collection
A beautiful combination of gemmy purple Fluorite crystals with lustrous jet black Sphalerite crystals and minor Chalcopyrite on a contrasting white crystalline Quartz matrix. In very good condition.
Malachite Slice
D.R. Congo, Africa
8.5 x 6 x 0.5 cm
Ex-M.C. Brown Collection
An aesthetic cross section of Malachite stalactites revealing intricate growth rings. In very good condition
Prehnite Crystal Cluster
West Paterson "Pumping Station" New Jersey, USA
Ex-Wolfgang Vogt Collection
A fine specimen of light green Prehnite finger like crystals taken from a significant pocket discovered during excavation for constuction of a pumping station in West Paterson, NJ. In fine condition.
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DT Calcite Crystal on Calcite
Pugh quarry, Wood County, Ohio, USA
8 x 6 x 3 cm
A twinned, doubly terminated golden Calcite crystal to 7 cm on a matrix of smaller Calcites. In excellent condition.
Fluorapatite Crystals with Siderite, Pyrite & Muscovite
Panasqueira Mines, Beira, Baixa, Portugal
5.5 x 4.5 x 2 cm
 A highly desirable blue Fluorapatite crystal, measuring 
3.5 x 2 x 1.5 cm, with surounding  light tan Siderite on a matrix with some smaller Apatites and minor Pyrite and Muscovite from the famous Panasqueira Mines. In pristine condition.
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