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312 products
Grossular garnets are a variety of garnet known for their diverse range of colors, transparency, and wide occurrence across different geological settings. The grossular garnet specimens from Lake Jaco, Chihuahua, Mexico are renowned for their classic crystal shape and attractive yellow-green coloration. These particular clusters are beautiful and intricate formations.
Garnets are believed to have properties associated with vitality, courage, and creativity. They are thought to bring balance and stability.
Name: Grossular Garnet Crystal Cluster
Specimen Size: Miniature-Sized
Dimensions: 36x28x22 mm / 1.1x1.3x0.9 inches
Weight: 31.3 grams / 1.1 Ounces
Origin: Lake Jaco, Mexico
Prehnite is a green to yellowish-green colored mineral that belongs to the phyllosilicate family. It is composed of calcium, aluminum, and silicate, with traces of iron, magnesium, and other elements. Prehnite crystals have a unique pearly luster and can form in a variety of shapes, including tabular, prismatic, and stalactitic formations.
Prehnite is believed to have a calming effect on the mind and emotions, promoting relaxation and inner peace. It is also said to be a stone of unconditional love, compassion, and healing.
Name: Prehnite and Graphite Crystal Cluster
Specimen Size: Thumbnail-Sized
Dimensions: 22x20x10 mm / 0.9x0.8x0.4 inches
Weight: 4.5 Grams / 0.16 Ounces
Origin: Mined in Merelani Hills, Arusha, Tanzania
Grossular garnets are a variety of garnet known for their diverse range of colors, transparency, and wide occurrence across different geological settings. The grossular garnet specimens from Lake Jaco, Chihuahua, Mexico are renowned for their classic crystal shape and attractive yellow-green coloration. These particular clusters are beautiful and intricate formations.
Garnets are believed to have properties associated with vitality, courage, and creativity. They are thought to bring balance and stability.
Name: Grossular Garnet Crystal Cluster
Specimen Size: Miniature-Sized
Dimensions: 36x32x22 mm / 1.4x1.3x0.9 inches
Weight: 32 grams / 1.1 Ounces
Origin: Lake Jaco, Mexico
Pseudomorphs are mineral specimens that have the external shape of one mineral but are composed of another. The pseudomorph goethite after marcasite forms when marcasite is exposed to oxidizing conditions and starts to oxidize and break down. As the marcasite breaks down, goethite replaces it in the crystal structure, preserving the shape of the original marcasite crystal. The resulting specimen appears as a marcasite crystal, but is actually composed of goethite.
The Farafra Oasis, in the White Desert, has been known for a number of years to deliver incredible pseudomorph specimens. The pseudomorphs occur within the Cretaceous Khoman Chalk, from which the White Desert derives its name.
This specimen is remarkable for its relatively sharp and bladed marcasite crystal form. It is in excellent condition.
Name: Goethite After Marcasite Pseudomorph
Specimen Size: Miniature-Sized Specimen
Dimensions: 36x33x27 mm / 1.4x1.3x1.1 inches
Weight: 42 grams / 1.5 ounces
Origin: White Desert, Farafra Oasis, Egypt
Grossular garnets are a variety of garnet known for their diverse range of colors, transparency, and wide occurrence across different geological settings. The grossular garnet specimens from Lake Jaco, Chihuahua, Mexico are renowned for their classic crystal shape and attractive yellow-green coloration. These particular clusters are beautiful and intricate formations.
Garnets are believed to have properties associated with vitality, courage, and creativity. They are thought to bring balance and stability.
Name: Grossular Garnet Crystal Cluster
Specimen Size: Miniature-Sized
Dimensions: 44x36x32 mm / 1.7x1.4x1.3 inches
Weight: 53.8 grams / 1.9 Ounces
Origin: Lake Jaco, Mexico
Grossular garnets are a variety of garnet known for their diverse range of colors, transparency, and wide occurrence across different geological settings. The grossular garnet specimens from Lake Jaco, Chihuahua, Mexico are renowned for their classic crystal shape and attractive yellow-green coloration. These particular clusters are beautiful and intricate formations.
Garnets are believed to have properties associated with vitality, courage, and creativity. They are thought to bring balance and stability.
Name: Grossular Garnet Crystal Cluster
Specimen Size: Miniature-Sized
Dimensions: 33x26x22 mm / 1.3x1.0x0.9 inches
Weight: 24.6 grams / 0.9 Ounces
Origin: Lake Jaco, Mexico
Named for Ernst Ludwig, an Austrian Professor of Chemistry at the University of Vienna in Austria who was the first to analyze the type material. Ludwigite is a somewhat uncommon, but widespread mineral that can be found in Romania, Italy, Scotland, Sweden, Russia, Iran, the United States, Canada, and North Korea, among others. Typically, Ludwigite occurs in magnesian iron skarn and in contact metamorphic deposits. It is likely that Ludwigite is weakly ferromagnetic, a naturally permanent magnet.
In this specimen, multiple layers of compact black fans and patches of Ludwigite in a greenish white matrix, possibly another borate mineral. This specimen from the Mountain Lake Mine is an interesting addition to any mineral collection.
Name: Ludwigite
Specimen Size: Miniature-Sized
Dimensions: 49x49x45 mm / 1.9x1.9x1.8 inches
Weight: 171 Grams / 6.0 ounces
Origin: Mined in Mountain Lake Mine (Jack Mine), Great Western Mine Group, Brighton, Big Cottonwood Mining District, Salt Lake County, Utah, USA
Peruvian pyrite is famous worldwide for its well-formed, highly lustrous crystals. The country is one of the top sources for high-quality pyrite specimens, particularly from the Huanzala Mine in the Áncash Region and the Quiruvilca Mine in La Libertad. These locations produce stunning pyritohedral crystals, often found in association with quartz, sphalerite, and galena. The entire top of the specimen is covered with many sharp brassy pyrite crystals with some smaller white quartz crystals.
The term “pyritohedral” refers to a specific crystal habit that pyrite (and occasionally other minerals) can form. In this structure, the crystal takes on a polyhedral shape with 12 faces. However, unlike a perfectly symmetrical shape with identical pentagonal faces, natural pyritohedral crystals often exhibit slight irregularities or distortions in their faces.
Pyrite is known as a stone of protection, abundance, and confidence. It is believed to shield against negative energy and promote mental clarity and willpower.
This great Peruvian specimen is in very good condition. Would be a beautiful addition to any new or existing collection.
Name: Pyrite Cluster
Specimen Size: Cabinet-Sized
Dimensions: 75x55x44 mm / 3.0x2.1x1.7 inches
Weight: 267 Grams / 9.4 oz
Origin: Mined in Quiruvilca Mine, Quiruvilca District, Santiago de Chuco Province, La Libertad, Peru
This is a 45.4 gram lot of beautiful tumbled Lapis Lazuli from Afghanistan. There are 5 pieces that range in size from approximately 21-33x12-19 mm. This is the exact lot that you will receive.
Lapis lazuli is a vivid blue metamorphic rock and a gemstone that has been prized for its intense color and historical significance for thousands of years. It's composed of lazurite (for the blue color), calcite, sodalite, and pyrite. It is the presence of pyrite that causes the gold-colored flecks or veins in the stone. It has a moderate hardness, typically ranging from 5 to 5.5 on the Mohs scale. High-quality lapis lazuli has been historically sourced from mines in Afghanistan; however, other deposits are found in countries such as Russia, Chile, Italy, and the United States.
Lapis lazuli is believed to promote self-awareness and mental clarity.
Oolites in the Great Salt Lake, Utah, are tiny, sand-sized, spherical or ovoid grains (0.15–1.5 mm) formed by calcium carbonate precipitating in concentric layers around a nucleus—often brine shrimp fecal pellets or mineral fragments—in shallow, wave-agitated water. These light brown grains, commonly found on Antelope Island and Stansbury Island, are modern examples of carbonate sedimentation.
This geological specimen found around Stansbury Island and other parts of the Great Salt Lake is an interesting addition to any mineral collection.
Name: Oolites
Specimen Size: Miniature-Sized
Dimensions: 50x22 mm / 2.0x0.9 inches (Incl bottle)
Weight: 31.4 Grams / 1.1 ounces (incl bottle)
Origin: Salt Lake, Utah, USA
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