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129 products
The smoky-brown color of this beautiful calcite cluster is a result of trace impurities or microscopic inclusions incorporated during crystal growth. Iron, manganese, or tiny mineral inclusions can impart shades ranging from pale champagne to deep smoky brown.
Donghai Mine, Jiangsu Province, China, is located within the Sulu ultrahigh-pressure metamorphic belt, one of the world's most geologically significant regions. Formed during the collision of two ancient continental plates hundreds of millions of years ago, the area contains rocks that were buried deep within the Earth before being uplifted to the surface. Later hydrothermal activity deposited mineral-rich veins throughout the region, creating exceptional crystals of quartz, fluorite, calcite, and other minerals.
Today, Donghai is internationally recognized as one of China's premier mineral-producing districts. In addition to quartz, the district is well known for its beautifully crystallized fluorite and calcite, valued for their vibrant colors, transparency, and excellent crystal form. Specimens from Donghai are prized not only for their beauty but also for the remarkable geological history they represent.
Name: Smoky Calcite Cluster
Specimen Size: Large Cabinet-Sized
Dimensions: 235x150x100 mm / 9.3x5.9x3.9 inches
Weight: 1.885 Kg / 4.15 pounds
Location: Donghai Mine Jiangsu Province, China
This a beautiful green Fluorite cluster from China's Donghai Mine in Jiangsu Province - a location that's well known for producing stunning fluorite with exceptional clarity and a vibrant green colour.
Donghai Mine, Jiangsu Province, China, is located within the Sulu ultrahigh-pressure metamorphic belt, one of the world's most geologically significant regions. Formed during the collision of two ancient continental plates hundreds of millions of years ago, the area contains rocks that were buried deep within the Earth before being uplifted to the surface. Later hydrothermal activity deposited mineral-rich veins throughout the region, creating exceptional crystals of quartz, fluorite, calcite, and other minerals.
Today, Donghai is internationally recognized as one of China's premier mineral-producing districts. In addition to quartz, the district is well known for its beautifully crystallized fluorite and calcite, valued for their vibrant colors, transparency, and excellent crystal form. Specimens from Donghai are prized not only for their beauty but also for the remarkable geological history they represent.
This is a lovely piece that would make a great addition to any collection.
Name: Green Fluorite Cluster
Specimen Size: Large Cabinet-Sized
Dimensions: 225x140x110 mm / 8.9s5.5x4.33 inches
Weight: 2.3 kg / 5.1 lbs
Location: Donghai Mine, Jiangsu Province, China
This is a natural "Ball Peen" Mica specimen from Branchville, Connecticut. Instead of forming flat, book-like sheets as muscovite usually does, mica specimens from the Branchville Mica Mine develop a rounded, bulbous termination resembling the rounded end of a ball-peen hammer, from which its name is derived.
The Branchville Mica Mine, which has been inactive since 1944 and is mostly flooded, is one of the most historically important mineral localities in the United States. Opened in the 1870s as a mica mine, it quickly became internationally recognized for its scientific significance after Yale University mineralogists discovered an exceptional variety of rare minerals within its pegmatite. The quarry served as the type locality for several newly identified mineral species and played a key role in advancing the study of pegmatites and mineral formation. It is especially famous for producing the distinctive "ball-peen" muscovite crystals, along with fine specimens of beryl, spodumene, and other rare minerals.
This classic specimen from Connecticut will come protected in a Perky Box. The box will show its age but is just another way to show how old the specimen is. The original label when the specimen was catalogued is also a nice touch.
Name: Mica
Specimen Size: Miniature-Sized
Dimensions: 33x19x16 mm / 1.3x0.7x0.6
Weight: 10.9 Grams / 0.4 Ounces
Origin: Mined in Fillow Quarry, Branchville, Redding, Fairfield County, Connecticut, USA
This is a superb looking Garabato meteorite full slice weighing 4.79 grams and measuring 34x33x2 mm. This fresh H5 chondrite classified meteorite with 50% fusion crust was found September 23, 1995. The total weight of the single stone is 160 Kg. The meteorite was found while plowing.
Would be a beautiful addition to any new or existing collection. Will come with a Canagem Collection and a Naturalia specimen card.
This is a great looking part slice of the Ozona H6 Chondrite classified meteorite. The specimen weighs 2.08 grams and measures 15x7x5 mm. This specimen is from the Mark Bostick Collection.
The Ozona meteorite was discovered on the W. Payen Ranch in Crockett County, Texas, United States, in 1929. However it was not recognized as a meteorite until 1939. Many fragments of this H6 Stone Chondrite were recovered, the largest of which weighed 110 lbs.
Ozona is a veined H6 chondrite. Don't miss your chance to add this rarely offered location to your collection. The specimen comes with a Mark Bostick Collection and a Canagem Collection specimen card. Would be a beautiful addition to any new or existing collection.
This is a great looking laboratory vial of the Ozona H6 Chondrite classified meteorite. The specimen weighs 0.158 grams. This specimen is from the Martin Horejsi Collection.
The Ozona meteorite was discovered on the W. Payen Ranch in Crockett County, Texas, United States, in 1929. However, it was not recognized as a meteorite until 1939. Many fragments of this H6 Stone Chondrite were recovered, the largest of which weighed 110 lbs.
Ozona is a veined H6 chondrite. This offering is for Ozona fragments and dust in a capsule. Also included is the plastic laboratory vial from which this material originally came. Don't miss your chance to add this rarely offered location to your collection.
The specimen comes with a Martin Horejsi Collection and a Canagem Collection specimen card. Would be a beautiful addition to any new or existing collection.
This is an incredible green/yellow, fluorapatite crystal from Cerro del Mercado (Iron Mountain) in Durango, Mexico. It is completely free of the matrix and has a relatively perfect termination. The catalog number 2246 of this phantom specimen came from the Earl Calvert Collection.
At Cerro de Mercado, numerous veins containing gemmy, lemon-yellow to greenish fluorapatite crystals cut through the hematite massif. These crystals have been collected for decades from the area's iron mines, but they have become much more scarce with recent mechanization of the mining operations.
The bright, lustrous apatite crystals form hexagonal shapes with off-center terminations. They are found in vugs, often associated with quartz and calcite. Most crystals are around an inch in length, though larger crystals up to about 4 inches long have been found.
Name: Fluorapatite Crystal
Specimen Size: Thumbnail-Sized
Dimensions: Specimen 22x7x6mm / 0.9x0.3x0.2 inches
Box 33x33 mm / 1.3x1.3 inches
Weight: Specimen 2.23 grams
Origin: Mined in Cerro del Mercado, Durango, Mexico
Product Type: Rhodolite Garnet
Approx Weight (per Lot): 2.5tcw
Size: 3.7mm
Shape: Square Cut
Color: Reddish Purple
Clarity: Clean to the eye
Origin: Tanzania
Treatment: None
These are the exact gemstones that you will receive.
Product Type: Onyx
Approx Weight (per lot): 3.8tcwct
Size: 7.6x5.6 - 8x6mm
Shape: Oval Cut
Color: Green
Clarity: Opaque
Origin: Brazil
These are the exact stones that you will receive.
Product Type: Sapphire
Approx Weight (per piece): 0.53ct
Size: 5x4mm
Shape: Octagon Cut
Color: Golden Yellow
Clarity: Clean
Origin: Africa
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