Colorado Gem & Mineral Co. - Rocks for the Rest of Us

Minerals H - Z

Description for Minerals H - M

Display: List / Grid
Show:
Sort By:
Forsterite ( Peridot )
Item: a444
Locality: Sapat Gali, Khyber-Pakhtunkhwa Prov., Pakistan
L: 1.75in
W: 1.25in
H: 1.25in
Weight: 0.00g
Aesthetic group of large, well-formed Forsterite ( Peridot ) crystals.
$225.00
Hedenbergite
Item: 6861
Locality: Chifeng, Inner Mongolia
L: 4.00in
W: 2.25in
H: 1.50in
Weight: 0.00
Museum class specimen of Hedenbergite, with quartz crystals. Displays well from any direction
$175.00
Helvite on Arsenopyrite
Item: 7909
Locality: De'an, Jiangxi Province, CHINA
L: 2.50in
W: 1.25in
H: 1.00in
Weight: 0.00ct
Rare beryllium mineral Helvite, with orange-brown color and up to 9mm in size, on brilliant Arsenotpytites.
$95.00
Helvite on Orthoclase with Spessartine Garnet and Muscovite
Item: 30069
Locality: Yunxiao, Fujian Province, China
L: 3.00in
W: 2.25in
H: 1.00in
Weight: 0.00
Brown Helvites to 1 cm, some twinned on Orthoclase feldspar with some small Spessartites on both.
$385.00
Helvite on Orthoclase with Spessartine Garnet and Muscovite
Item: 30099
Locality: Wu Shan Mine, Yunxiao, Fujian Province, China
L: 3.00in
W: 2.00in
H: 1.00in
Weight: 0.00
Nice matrix with orange helvites up to 1 cm! And if you turn it over it has crystals of spessartite sprinkled on the bottom on the crystallized feldspar.
$175.00
Helvite with Spessartine Garnet and Muscovite
Item: 3668
Locality: Wushan Mine, Fujian Province, China
L: 2.00in
W: 2.00in
H: 2.00in
Weight: 0.00
Two sharp orange helvites, the smaller one twinned, on knob of granite, with small crystals of muscovite. Fine specimen.
$285.00
Helvite with Spessartine Garnet on Feldspar
Item: 3844
Locality: Wushan Mine, Fujian Province, China
L: 2.00in
W: 1.50in
H: 1.00in
Weight: 0.00
Color zoned crystal, very sharp, with small red orange spessartine garnet on thin plate of feldspar, helvite is a rare Beryllium mineral. Several micro crystals of unidentified mineral, probably a rare earth oxide.
$75.00
Helvite with Spessartite and Quartz
Item: 3400
Locality: Wushan Mine, Yunxiao, Fujian Province, China
L: 4.00in
W: 3.00in
H: 1.00in
Weight: 0.00
Exceptional Helvite Specimen. The tabular dark brown crystal has a hole in one face that enters a small cavity inside the Helvite. Helvite is a rare Beryllium mineral with both sulfur and silica. Also on the piece are orange spessartite garnets and muscovite crystals. The matrix is a very thin crust that has crystals on the other side as well. A very fine specimen. Feel free to request other pictu
$375.00
Helvite with Spessartite, Muscovite and Unknown on Orthoclase
Item: 3304
Locality: Yunxiao, Fujian Province, China
L: 1.60in
W: 1.50in
H: 1.25in
Weight: 0.00
Extremely rare Beryllium mineral Helvite in sharp crystals with orange spessartite on orthoclase feldspar. Very limited production, to this date from only one mine in China.
$225.00
Hematite
Item: 1779
Locality: Minas Gerais, Brazil
L: 2.20in
W: 1.80in
H: 1.60in
Weight: 0.00ct
Single crystal with complex growth lines resembling engraving.  Brilliant luster, rare size, classic.  Mined in1970.
$125.00
Hematite after Magnetite
Item: 1353
Locality: Chubut, Argentina
L: 2.00in
W: 1.00in
H: 0.00in
Weight: 0.00
Brilliant metallic specimen of rare pseudomorph from a difficult locality in Argentina showing spinel twinning.
$70.00
Hematite after Magnetite
Item: 1351
Locality: Chubut, Argentina
L: 2.00in
W: 1.00in
H: 0.00in
Weight: 0.00
Excellent pseudomorph, complex and sharp form from 12,000 ft deposit in Argentina.
$75.00
Hematite after Magnetite
Item: 1352
Locality: Chubut, Argentina
L: 2.25in
W: 1.50in
H: 0.00in
Weight: 0.00
Fine psuedomorph from Volcano 12,000 feet in the Andes.
$75.00
Hematite after Magnetite
Item: 1799
Locality: Chubut, Argentina
L: 2.25in
W: 1.50in
H: 1.00in
Weight: 0.00
Very fine geometric crystal. Display directions are infinite on this specimen.
$110.00
Heulandite
Item: 9570
Locality: Aurangabad, Maharahstra, India
L: 3.00in
W: 2.50in
H: 1.50in
Weight: 0.00g
Self-standing specimen of beautiful orange Heulandite crystals from the recent production in India.
$60.00
Heulandite
Item: 9573
Locality: Aurangabad, Maharahstra, India
L: 3.50in
W: 2.50in
H: 2.00in
Weight: 0.00g
Dark orange Heulandite crystals on matrix from the recent production in India.
$70.00
Hubnerite on Quartz
Item: 9868
Locality: Kami, Bolivia
L: 2.00in
W: 1.25in
H: 1.25in
Weight: 55.00g
Brilliant, sharp Huebnerite crystals aesthetically perched on clear Quartz. Click photo for different view.
$85.00
Hydroxyl-Herderite with Zinnwaldite
Item: a720
Locality: Xanda Mine, Virgem da Lapa, Minas Gerais, Brazil
L: 3.75in
W: 3.50in
H: 2.00in
Weight: 0.00g
Hydroxyl-Herderite on pseudomorph (likely Beryl) showing core of Feldspar and rim of Zinnwaldite.  One side is Zinnwaldite, sprinkled with smaller Herderites.   A group of larger, well-formed Hydroxyl-Herderites is perched at the top. Click photo for additional views.
$425.00
Hydrozincite
Item: 1653
Locality: Daoping, Guangxi Zuang A. R., China,
L: 2.10in
W: 1.50in
H: 1.00in
Weight: 0.00kg
Stalactite group of snow white Hydrozincite, "zinc bloom", a carbonate of Zinc.  Fluoresces pale purple-blue with tiny orange flashes.
$65.00
Ilvaite
Item: 6385
Locality: Chifeng, Inner Mongolia, China
L: 2.00in
W: 0.75in
H: 0.50in
Weight: 0.00
Sharp bundle of curved crystals, rare locality
$45.00
Kunzite
Item: 9175
Locality: Skardu, Pakistan.
L: 1.50in
W: 1.25in
H: 0.50in
Weight: 30.00g
Gemmy, classic shaped Kunzite crystal.  Very sharp crystal form. 30 grams
$125.00
Kunzite
Item: a809
Locality: Nuristan, Afghanistan
L: 1.50in
W: 1.00in
H: 0.50in
Weight: 0.00g
Doubly-terminated Kunzite crystal with pastel-pink color.   Classic.
$175.00
Kunzite
Item: 8690
Locality: Nuristan, Afghanistan
L: 3.85in
W: 1.40in
H: 0.20in
Weight: 48.00g
Doubly terminated Kunzite with classic shape and good color.
$395.00
Kunzite
Item: 9899
Locality: Nuristan, Afghanistan
L: 2.25in
W: 0.25in
H: 0.13in
Weight: 19.00ct
Twinned, doubly terminated, pale-pink Kunzite crystal.   Flawless.  
$95.00
Kunzite
Item: a810
Locality: Kunar, Afghanistan
L: 4.25in
W: 1.75in
H: 0.75in
Weight: 0.00g
Classic shaped, perfect crystal of Kunzite with excellent color. Click photo for additional view.
$525.00
Kunzite ( variety of Spodumene )
Item: a308
Locality: Nuristan, Afghanistan
L: 2.50in
W: 0.75in
H: 0.25in
Weight: 0.00g
Brilliant, glassy Kunzite crystal with etched surfaces.
$65.00
Kunzite ( variety of Spodumene )
Item: a238
Locality: Nuristan, Afghanistan
L: 2.00in
W: 1.00in
H: 0.25in
Weight: 0.00g
Tabular double crystal of Spodumene with good color and classic form.   Very aesthetic.
$165.00
Kunzite (pink var. of Spodumene)
Item: 8681
Locality: Nuristan, Afghanistan
L: 2.00in
W: 0.25in
H: 0.25in
Weight: 0.00ct
Doubly terminated crystal with perfect form
$135.00
Kunzite (pink var. of Spodumene)
Item: 8691
Locality: Nuristan, Afghanistan
L: 3.00in
W: 1.40in
H: 0.40in
Weight: 62.00g
Classic shape of this gem mineral named for Frederich Kunz. Kunzite with nice pink color.
$335.00
Kunzite, var. of Spodumene
Item: 9406
Locality: Nuristan, Afghanistan
L: 3.25mm
W: 1.00mm
H: 0.50mm
Weight: 47.00g
Brilliant, gemmy Kunzite single crystal that has been corroded by nature in pocket.   Beautiful from any angle, strong pink color.
$365.00
Liddicoatite
Item: 2327
Locality: Burma
L: 1.50in
W: 1.50in
H: 1.50in
Weight: 0.00
Botryoidal rubellite with 3/8 microlite xl...A one of a kind specimen an association/locality you won't find another of"
$285.00
Magnetite
Item: 6860
Locality: Chifeng, Inner Mongolia
L: 4.50in
W: 3.50in
H: 2.00in
Weight: 0.00
Giant Magnetite crystal on matrix with Quartz crystals. Museum class specimen. Best magnetite specimen we have had.
$345.00
Magnetite with Quartz
Item: 7908
Locality: Jinkouhe, Sichuan Province, China
L: 4.00in
W: 3.00in
H: 2.00in
Weight: 500.00g
Magnetite crystals with unusual velvet appearance. Strongly magnetic. Sharp crystal form, with smal small quartz crystals.  Matrix is combination of calcite and magnetite. The small calcite crystals that are pried loose stick to a magnet die to inclusions of magnetite.
$110.00
Malachite
Item: a390
Locality: Congo, Africa
L: 3.50in
W: 3.00in
H: 0.50in
Weight: 0.00g
Beautiful, polished slab of Malachite with concentric rings and excellent form. Please see other polished Malachites in our collectibles category.
$40.00
Malachite
Item: 9982
Locality: Bou Azzer, Morocco
L: 2.00in
W: 1.50in
H: 1.25in
Weight: 0.00g
Beautiful spray of fibrous Malachite, in matrix.   Click photo for close-up.
$35.00
Malachite
Item: 9389
Locality: Bou Azer District, Morocco
L: 2.40in
W: 1.30in
H: 1.00in
Weight: 0.00ct
Chatoyant Malachite in shape of a bird.
$40.00
Malachite
Item: a75
Locality: Bou Azzer, Morocco
L: 3.25in
W: 3.25in
H: 2.25in
Weight: 0.00g
Brilliant sprays of fibrous Malachite on matrix, totally exposed for maximum viewing.   Very aesthetic. 
$110.00
Malachite
Item: a74
Locality: Bou Azzer, Morocco
L: 2.50in
W: 2.25in
H: 2.00in
Weight: 0.00g
Beautiful formation of Malachite perched on Rhyolite (volcanic rock) matrix.
$115.00
Malachite
Item: 9128
Locality: Tsumeb, Namibia
L: 5.00in
W: 3.50in
H: 1.50in
Weight: 422.00g
From Tsumeb, a specimen mined in the 70's of botryoidal Malachite, showing banding on edges. Almost a pound of copper
$125.00
Malachite after Selenite
Item: 9732
Locality: Bou Azzer, Morocco
L: 2.00in
W: 1.25in
H: 1.25in
Weight: 0.00g
Rare pseudomorph of Malachite after Selenite (Gypsum). Excellent specimen.
$65.00
Meteorite
Item: 6675
Locality: Nandan, Guangxi Province, China
L: 2.50in
W: 1.75in
H: 1.00in
Weight: 0.00
Nickel-Iron Meteorite fragment showing crystalline structure. Rare locality. 175 grams
$210.00
Microcline Feldspar
Item: a359
Locality: Guerrero, Mexico
L: 5.75in
W: 4.00in
H: 2.00in
Weight: 0.00g
Aesthetic group of architectural Microcline Feldspar crystals.
$65.00
Microcline with Quartz
Item: 2140
Locality: Guerrero, Mexico
L: 6.00in
W: 4.00in
H: 4.00in
Weight: 0.00
Very rare specimen of curved microclines with over a dozen quartz crystals, unusual feldspar specimen, aesthetic
$175.00
Microlite on Lepidolite with Elbaite
Item: 3671
Locality: Xanda Mine, Virgem da Lapa, Minas Gerais, Brazil
L: 2.00in
W: 1.50in
H: 1.50in
Weight: 0.00
Pale yellow microlite on color-zoned lepidolite with green tourmalines. Mined in the 70's.
$165.00
Monazite
Item: a236
Locality: Minas Gerais, Brazil.
L: 1.75in
W: 1.20in
H: 0.60in
Weight: 0.00ct
Huge well formed crystal from a pegmatite in Brazil.  Ce(PO4) and may contain Lanthium, Thorium, Uranium, and other rare earths.  Slightly radioactive,  This is museum quality. Click on picture to see other view.
$385.00
Morganite (Pink Beryl)
Item: 9951
Locality: Galileia, Minas Gerais, Brazil
L: 2.75in
W: 2.00in
H: 1.20in
Weight: 58.00g
Morganite is a variety of Beryl and is found in pink to peach colors.  This specimen is a brilliand pink gemmy crystal that has been etched by solutions in the pocket where it formed.  There are some small quartz crystals in a group on one side.  58 grams.  Click on picture to see other views.
$325.00
Native Silver
Item: 6133
Locality: Tongbei, Henan Province, China
L: 3.50in
W: 2.00in
H: 1.50in
Weight: 0.00
Black Slate with Fine wire silver, rare locality.
$110.00
Olivine (Peridot) Forsterite
Item: 6564
Locality: North-West Frontier, Pakistan
L: 1.75in
W: 1.25in
H: 1.00in
Weight: 0.00
Cluster of gemmy Peridot crystals from classic locality.
$185.00
Olivine (Peridot) Forsterite
Item: 6573
L: 1.50in
W: 1.25in
H: 0.75in
Weight: 0.00
Group of 3 gem peridots.
$285.00
Orthoclase
Item: 9687
Locality: Minas Gerais, Brazil
L: 0.00mm
W: 0.00mm
H: 0.00mm
Weight: 0.00ct
Extremely rare Orthoclase Feldspar twin, with crystal faces on all sides, cream colored, Jack purchased this in Brazil in the 70's from a collection in Brazil.  This is a one of a kind specimen.  Click on picture to see other view.
$195.00
Orthoclase with Quartz, Beryl and Goethite
Item: 9612
Locality: Brandberg Massif, Namibia
L: 5.50in
W: 4.50in
H: 2.50in
Weight: 0.00g
Elongated, twinned Orthoclase crystals with tapered, doubly-terminated Quartz crystals. Small Aquamarines and Goethite pseudorphs (after Sidderite) are spread throughout.
$125.00
Pentagonite
Item: 9824
Locality: Wagholi Quarries, Maharashtra, Wagholi, Pune District, India
L: 3.00in
W: 2.00in
H: 2.00in
Weight: 0.00ct
Extremely rare dimorph of Cavansite, this Pentagonite specimen has three vugs of electric blue crystals.  Excellent price, our supplier is a great guy.  Compare at triple the price.
$325.00
Pentagonite
Item: 9823
Locality: Wagholi Quarries, Maharashtra, Wagholi, Pune District, India
L: 2.50in
W: 2.00in
H: 1.30in
Weight: 0.00ct
We have acquired a few specimens of Pentagonite, a dimorph of Cavansite.  Both are Calcium Vanadium Silicates, the former being the high temperature much rarer mineral.  This specimen is Andesite (volcanic intrusive rock) with brilliant pure blue crystals in a well protected vug.Compare at $500 or more with other dealers.  Our source is a down to earth Indian dealer and we are gl
$275.00
Peridot
Item: 4217
Locality: Sapat Gali, Khyber-Pakhtunkhwa Prov., Pakistan
L: 0.90in
W: 0.50in
H: 0.50in
Weight: 0.00kg
Gemmy single crystal, thumbnail. Can be mounted in gold or silver as a pendant. Inquire if interested. 6.2 grams
$85.00
Petalite
Item: 9948
Locality: Kunar, Nuristan Prov., Afghanistan
L: 5.50in
W: 3.00in
H: 3.00in
Weight: 804.00g
Huge crystal of this rare Lithium silicate from  the Hindu Kush.  Gemmy, pale yellow. 
$185.00
Phenakite on Muscovite
Item: 6545
Locality: Ural Mountains, Russia
L: 1.50in
W: 1.50in
H: 1.00in
Weight: 0.00kg
Complete diskshaped Phenakite crystals in group on Muscovite. Excellent specimen.
$225.00
Prehnite on Quartz
Item: 7657
Locality: Xobodobos, Brandberg area, Namibia
L: 2.00mm
W: 1.50mm
H: 1.50mm
Weight: 0.00lb
Translucent "wheel" of apple green Prehnite on Quartz crystals, very fine
$85.00
Pyrite
Item: 4612
Locality: Huanzala, Peru
L: 3.00in
W: 2.00in
H: 1.50in
Weight: 0.00
Modified Octahedrons, very aesthetic.
$75.00
Pyrite
Item: 8217
Locality: Huanzala Mine, Huallanca Dist., Bojognesi Prov., Ancash, Peru
L: 2.50in
W: 2.25in
H: 1.50in
Weight: 0.00ct
Mesmerizing group of small to large pyritohedrons with infinite display directions.  Very brilliant Pyrites.
$60.00
Pyrite
Item: 9577
Locality: Huanzala, Peru
L: 2.75in
W: 2.25in
H: 1.50in
Weight: 276.00g
Brilliant, striated Pyrite crystal group, composed of a large cube among pyritohedrons.
$125.00
Pyrite
Item: 9545
Locality: Huanzala, Peru
L: 2.50in
W: 1.50in
H: 1.00in
Weight: 125.00g
Brilliant, octahedron Pyrite crystals with excellent luster, very aesthetic.   Crystallized on all sides for many display angles.
$55.00
Pyrite
Item: 1676
Locality: Huanzala, Peru.
L: 3.25in
W: 2.30in
H: 1.70in
Weight: 320.00g
Formation of brilliant pyritehedrons.  Mirror-like crystals show lots of striations and this piece is going to get a lot of attention in a display.  Choice condition.
$125.00
Pyrite
Item: a63
Locality: Huanzala, Peru
L: 3.00in
W: 2.00in
H: 1.00in
Weight: 0.00g
Brilliant octahedrons of Pyrite on matrix, very aesthetic.
$80.00
Pyrite
Item: 9337
Locality: Huanzala Mine, Huallanca Dist., Bojognesi Prov., Ancash, Peru
L: 2.50in
W: 2.00in
H: 1.50in
Weight: 0.00ct
Floater piece of brilliant, striated Pyrite crystals.  Infinite display angles  Very fine.
$90.00
Pyrite
Item: 1677
Locality: Navajun, Spain
L: 2.00in
W: 2.00in
H: 1.50in
Weight: 177.00g
Our best remaining specimen of interlocking Pyrite cubes.   A real puzzle to observe.   Brilliant.
$145.00
Pyrite
Item: a73
Locality: Huanzala, Peru
L: 2.25in
W: 1.75in
H: 1.75in
Weight: 0.00g
Two brilliant, well-formed octahedrons of Pyrite with excellent form.
$125.00
Pyrite
Item: 1678
Locality: Navajun, Spain
L: 2.00in
W: 1.50in
H: 1.25in
Weight: 120.00g
Sharp, brilliant, interlocking Pyrite cubes in aesthetic composition.   One of our best remaining specimens.
$165.00
Pyrite
Item: 9908
Locality: Huanzala, Peru
L: 2.00in
W: 1.50in
H: 1.50in
Weight: 120.00g
Cubic Pyrite crystals arranged in dramatic, chain-like composition.   Click photo for additional view.
$65.00
Pyrite
Item: 9575
Locality: Huanzala, Peru
L: 3.50in
W: 2.50in
H: 2.50in
Weight: 0.00ct
A really great Pyrite, 360 degrees display directions, crystals on all sides.  Brilliant and striated, there is one very unusual flattened crystal.  Click on photo for other views.
$225.00
Pyrite
Item: 7021
Locality: Uiruvilca, La Libertad dept., Peru
L: 3.00in
W: 2.60in
H: 2.00in
Weight: 0.00kg
Nice variation in size, dramatic display piece.
$60.00
Pyrite
Item: 9576
Locality: Huanzala, Peru
L: 3.00in
W: 2.50in
H: 2.00in
Weight: 0.00ct
Fine group of brilliant, striated cubes. Crystals on all sides.
$120.00
Pyrite
Item: 7047
Locality: Racracancha Mine,Cerro de Pasco, Pasco, Peru
L: 2.00in
W: 2.00in
H: 2.00in
Weight: 0.00g
Lustrous, striated Pyrite crystals with nice variation in size and wonderful composition. Excellent condition.
$135.00
Pyrite
Item: 7019
Locality: Racracancha Mine,Cerro de Pasco, Pasco, Peru
L: 2.50in
W: 2.00in
H: 2.00in
Weight: 0.00kg
Brilliant striated cubes in stunning group. very fine. Multiple display directions.
$110.00
Pyrite
Item: 9336
Locality: Huanzala Mine, Huallanca Dist., Bojognesi Prov., Ancash, Peru
L: 2.50in
W: 2.00in
H: 1.30in
Weight: 0.00ct
Brilliant cube with crystal markings resembling engraving. Some small Sphalerite crystals and smaller cubes of Pyrite.  Very dramatic.
$85.00
Pyrite
Item: 7048
Locality: Racracancha Mine,Cerro de Pasco, Pasco, Peru
L: 2.50in
W: 2.50in
H: 1.50in
Weight: 0.00g
Fine specimen of brilliant Pyrite cubes on matrix. Catches light from all angles.
$145.00
Pyrite (Museum Quality)
Item: a24
Locality: Huanzala Mine, Huallanca Dist., Bojognesi Prov., Ancash, Peru
L: 4.25in
W: 3.00in
H: 3.00in
Weight: 1.21kg
A very fine Pyrite, no damage, mostly large modified octagons.  Displays from infinite directions.  Just in from Tucson 2020.  Click on photo to see other photos.  Bottom is where it attached to vein, 
$525.00
Pyrite Concretion
Item: 5203
Locality: Dongchuan District, Kuming Prefecture, Yunnan Province, China
L: 2.50in
W: 2.00in
H: 1.50in
Weight: 0.00kg
Natural geologic feature of pyrite in black shale concretion. These concretions are found in sizes as large as 5 feet across, but few have the showy pyrite and small sizes like these are even rarer. We predict that this new find will be quickly exploited and become a rarity in the near future. flattened egg shape.
$55.00
Pyrite Concretion
Item: a575
Locality: Morocco
L: 4.25in
W: 2.75in
H: 2.00in
Weight: 0.00g
Unusual, elongated Pyrite concretion on matrix, with a shape resembling a baseball bat.
$85.00
Pyrite Concretion
Item: 5230
Locality: Dongchuan District, Kuming Prefecture, Yunnan Province, China
L: 2.00in
W: 1.50in
H: 1.50in
Weight: 0.00kg
Bands of pyrite in black shale concretion.
$40.00
Pyrite Concretion
Item: 5239
Locality: Dongchuan District, Kuming Prefecture, Yunnan Province, China
L: 4.00in
W: 2.50in
H: 2.50in
Weight: 0.00
Very large concretion with distinct layers of pyrite crystals. How these formed is really unique. Bubbles of HS gas (from rotting organic material in the mud) at the bottom of a sea(later forming black shale) reacted with the iron and solidified in the mud, later to be found as concretions in the black shale. There won't be a lot more of these because they are found only at the exposures on the co
$90.00
Pyrite Concretion
Item: a500
Locality: Dongchuan District, Kuming Prefecture, Yunnan Province, China
L: 3.00in
W: 2.25in
H: 1.50in
Weight: 0.00g
Unusual concretion of brilliant Pyrite in black shale, aesthetic. Wooden stand can be included for $5. White and clear plastic stands are available at no cost.
$60.00
Pyrite Concretion
Item: 5240
Locality: Dongchuan District, Kuming Prefecture, Yunnan Province, China
L: 3.25in
W: 2.00in
H: 2.00in
Weight: 0.00kg
Bizarre duck head shaped black shale with pyrite portion at top. Bottom portion is black shale with high pyrite content. Nature's magic trick. Natural geologic feature of pyrite in black shale concretion. These concretions are found in sizes as large as 5 feet across, but few have the showy pyrite and small sizes like these are even rarer. We predict that this new find will be quickly exploited
$85.00
Pyrite Concretion
Item: 5231
Locality: Dongchuan District, Kuming Prefecture, Yunnan Province, China
L: 3.00in
W: 2.00in
H: 2.00in
Weight: 0.00kg
Natural geologic feature of pyrite in black shale concretion. These concretions are found in sizes as large as 5 feet across, but few have the showy pyrite and small sizes like these are even rarer. We predict that this new find will be quickly exploited and become a rarity in the near future. This one has very large grain size of the pyrites in more defined rings, and is more oblong than most.
$75.00
Pyrite in Siderite
Item: 6853
Locality: Daye, Hubei Province, China
L: 3.00in
W: 1.50in
H: 1.50in
Weight: 0.00
Unusual pair of Pyrite crystals in red siderite, extremely rare pyrite occurence.
$110.00
Pyrite on Concretion
Item: a239
Locality: Morroco
L: 1.75in
W: 1.50in
H: 1.25in
Weight: 0.00g
Unusual concretion with complex Pyrite crystals.
$55.00
Pyromorphite
Item: 6615
Locality: Daoping Mine, Yangshou, Guangxi Province, China
L: 2.00in
W: 1.00in
H: 0.75in
Weight: 0.00kg
Finest color green pyromorphites on all sides of this matrix piece. Very fine.
$135.00
Pyromorphite
Item: a812
Locality: Guangxi Province, China
L: 1.75in
W: 1.50in
H: 1.00in
Weight: 0.00g
Bright, yellow-green Pyromorphite crystals aesthetically perched on matrix.   Excellent specimen.
$125.00
Pyrrhotite on Dolomite with Quartz
Item: 4197
Locality: Morro Velho Gold Mine, Minas Gerais, Brazil
L: 4.00in
W: 3.00in
H: 2.00in
Weight: 0.00kg
Rare specimen from the America's deepest gold mine, now closed. Numerous pyrrhotites on matrix of dolomite and quartz crystals. We obtained this piece in Brazil in 1977.
$245.00
Quartz - "Fairy Quartz" Japan-Law Twin
Item: dd6
Locality: Magaliesberg Mtn. Range, Kwa Ndebele, South Africa
L: 5.30in
W: 3.80in
H: 1.75in
Weight: 0.00g
From Rocko Minerals (Rob and Mandy Rosenblatt) at Columbus show 2003. Unusual form from that region, owner said this was one of only several Japanese twins that had been collected. Rare locality and size, BUT 2 dings, one large on one side.
$325.00
Quartz Scepter - clear head on Smoky stem
Item: dd7
Locality: Hallelujah Junction, Lassen Co., California USA
L: 4.80in
W: 1.20in
H: 0.90in
Weight: 0.00g
From mine-owner Foster Hallman in the 90s at Tucson. Dark, opaque smoky "stem" hosting a semi-transparent, colorless, lustrous, sharply formed "head". Rare proportions, size and combination of color.
$450.00
Quartz Stalactites on Chrysocolla
Item: a113
Locality: Gila County, Arizona
L: 2.00in
W: 1.75in
H: 0.75in
Weight: 0.00g
Druzy Quartz stalactites, colored a beautiful blue by the Chrysocolla underneath.   Very unusual.
$250.00
Quartz with Pyrite
Item: dd3
Locality: Bou Azer District, Morocco
L: 3.20in
W: 2.20in
H: 1.20in
Weight: 0.00ct
Very rare specimen of a Quartz crystal cloaked in crystallized Pyrite  with only a portion of the the Quartz revealed.  Formerly in the Victor Yount collection, traded to Jack Lowell , and then later sold to Dave Daniel.  A very fine specimen.
$495.00
Quartz with Siderite
Item: dd4
Locality: Gouranca, Morocco
L: 3.30in
W: 3.30in
H: 0.50in
Weight: 0.00ct
 Very aesthetic, 5 sharp clear-to-translucent quartz xls w/ some light hematite staining, contrasted with sharp, dark hematite rhombs. Contact in back does not detract. From the Dave Daniel Collection, previously from Rob Lavinsky.
$985.00
Realgar
Item: a458
Locality: Jiepayu Mine, Shimen, Hunan Province, China
L: 2.00in
W: 0.75in
H: 0.50in
Weight: 0.00g
Beautiful, blade-like crystal of Realgar with deep-red color and smaller, doubly-terminated crystal. Repaired.
$145.00
Rhodochrosite
Item: 9348
Locality: Babu, Guangxi Province, China
L: 3.50in
W: 2.75in
H: 1.00in
Weight: 0.00ct
Deep pink crystals throughout Quartz/sulphide matrix. 
$125.00
Rhodochrosite
Item: 9347
Locality: Babu, Guangxi Province, China
L: 2.50in
W: 2.00in
H: 1.00in
Weight: 0.00ct
Reddish pink rhombs of Rhodochrosite in Quartz
$110.00
Rhodochrosite
Item: 7078
Locality: Babu, Guangxi Province, China
L: 2.00in
W: 1.50in
H: 1.00in
Weight: 0.00kg
Bright reddish pink rhomb with small pyrites, cerrusite,and fluorite in matrix. Excellent piece.
$115.00
Rhodonite
Item: a80
Locality: Conseleiro Lafaiette, Minas Gerais, Brazil
L: 4.00in
W: 2.70in
H: 2.50in
Weight: 0.00ct
Group of large crystals with some matrix of iron-manganese minerals.
$75.00
Rhodonite
Item: 3527
Locality: Conseleiro Lafaiette, Minas Gerais, Brazil
L: 1.38in
W: 1.00in
H: 1.00in
Weight: 0.00
Bright red crystal on matrix
$110.00
Scheelite
Item: 30682
Locality: Yangangxian, Hunan Province, China
L: 3.00in
W: 2.50in
H: 1.50in
Weight: 0.00
Perfect 3/4 (1.7 cm) crystal on muscovite."
$165.00
Colorado Gem & Mineral Company © 2021