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Samarskite is a radioactive rare earth mineral. Samarskite crystallizes in the orthorhombic – dipyramidal class as black to yellowish brown stubby prisms although it is typically found as anhedral masses. Specimens with a high uranium content are typically metamict and appear coated with a yellow brown earthy rind.
Samarskite-(Y) is rich in rare earth elements (REEs), niobium (Nb), and tantalum (Ta)—all of which are valuable in advanced electronics, alloys, and green energy technologies. The mineral can also contain trace amounts of uranium and thorium, which may cause it to be slightly radioactive.
Due to its uranium content, samarskite-(Y) is considered radioactive. It's recommended to wash hands after handling and avoid inhaling dust when breaking or handling the mineral.
This specimen is in very good condition and displays very well. Make this a special specimen in your collection.
Name: Samarskite (Y)
Specimen Size: Thumbnail-Sized
Dimensions: 18x18x10 mm / 0.7x0.7x0.4 inches
Weight: 3.4 Grams / 0.12 Ounces
Origin: Luster # 2 1/2 Pegmatite, South Platte Mining District, Jefferson County, Colorado, USA
Health Warning: Contains uranium – always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest. Avoid prolonged exposure in proximity of the body. Store away from inhabited areas.
Hubnerite is a rare manganese tungstate mineral and the manganese-dominant member of the wolframite series. It typically forms dark reddish-brown to nearly black blade-like crystals with a submetallic to silky luster. This dense mineral is an important tungsten ore and is commonly found in high-temperature hydrothermal veins, often with quartz and fluorite. Specimens from Peru and Colorado are especially well known for their sharp, aesthetic crystal formations.
This specimen is in very good condition and displays very well. Make this a special specimen in your collection.
Name: Hubnerite
Specimen Size: Miniature-Sized
Dimensions: 35x24x22 mm / 1.4x0.9x0.9 inches
Weight: 18.2 Grams / .06 Ounces
Origin: Ruby Mine, San Juan Co., Colorado
Zinnwaldite is a rare, lithium-rich mica mineral known for its dark, silvery brown to reddish-brown color. It forms in layered, sheet-like crystals and has a soft, slightly shiny surface typical of the mica group. It was first discovered in the Zinnwald area on the German–Czech border, which is where its name comes from.
Zinnwaldite is believed to promote clarity, balance, and inner strength—making it an excellent companion for decision-making, emotional resilience, and self-trust.
This specimen is in very good condition and displays very well. Make this a special specimen in your collection.
Name: Zinnwaldite
Specimen Size: Cabinet-Sized
Dimensions: 72x44x22 mm / 2.7x1.7x1.5 inches
Weight: 61.7 Grams / 2.2 Ounces
Origin: Price Lake, Florence Co., Wisconsin
This is a natural cluster formation of large calcite crystals with hematite inclusions. This piece has some white color to translucent crystals with areas of orange/red coloring from hematite inclusions, with sharp tabular crystal formations. There are some nicks and imperfections on a few crystals but would still shine in the proper setup. They don't take away from how interesting this piece is. Would be a nice addition to any new or existing collection.
Name: Calcite with Hematite Crystal Cluster
Specimen Size: Cabinet-Sized
Dimensions: 75x54x55 mm / 2.8x2.1x2.2 inches
Weight: 160.5 Grams / 5.7 oz
Origin: Mined in Lane Quarry, Westfield, Hampden Co., Massachusetts, USA
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 marcasite crystal form. It is in excellent condition.
Name: Goethite After Marcasite Pseudomorph
Specimen Size: Miniature-Sized Specimen
Dimensions: 27x24x21 mm / 1.1x0.9x0.8 inches
Weight: 20.8 grams / 0.7 ounces
Origin: White Desert, Farafra Oasis, Egypt
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 marcasite crystal form. It is in excellent condition.
Name: Goethite After Marcasite Pseudomorph
Specimen Size: Miniature-Sized Specimen
Dimensions: 40x34x35 mm / 1.6x1.3x1.4 inches
Weight: 44.4 grams / 1.6 ounces
Origin: White Desert, Farafra Oasis, Egypt
Wavellite typically forms as radiating, spherical clusters or botryoidal (grape-like) aggregates, often appearing as green, yellow, brown, or even blue clusters on a host rock. The mineral typically forms in low-grade metamorphic rocks and phosphate-rich environments, often associated with minerals like quartz, variscite, and limonite.
Wavellite is found in several locations worldwide, with Arkansas, USA being one of the most famous sources, producing well-formed green botryoidal specimens. Other notable locations include England, Bolivia, Brazil, Germany, and Australia.
It is believed wavellite is linked to clarity, insight, and emotional balance, helping to provide a broader perspective on situations. It is sometimes associated with the heart chakra, thought to encourage compassion and emotional healing.
Name: Wavellite on Matrix
Specimen Size: Miniature-Sized
Dimensions: 59x45x31 mm / 2.3x1.8x1.2 inches
Weight: 71 grams / 2.5 oz
Origin: Mauldin Mountain, Mt. Ida, Arkansas, USA
Pyrite from Bolivia is known for forming beautiful, well-shaped crystals, often appearing as sharp cubes, pyritohedrons (12-sided shapes), or even complex, stepped growth patterns. Bolivian pyrite tends to have a bright, brassy gold color with a good metallic luster, and it’s often found in association with other minerals like quartz or galena.
Much of the pyrite from Bolivia comes from mining regions such as Potosí and Oruro, areas famous for their rich mineral deposits. While pyrite is common around the world, Bolivian specimens are valued for their attractive crystal habits, clean formations, and the quality of the material.
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 top Bolivian 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: 60x48x43 mm / 2.4x1.9x1.7 inches
Weight: 153 Grams / 5.4 oz
Origin: Canutillos Mine, Machacamarca-Colavi District, Cornelio Saavedra Province, Potosi Department, Bolivia
Kupletskite is a rare and complex titanium-bearing silicate mineral most famously found at Mont-Saint-Hilaire in Québec, Canada. It typically appears as tiny brown to reddish-brown crystals, often with a glassy or resinous luster. The crystals are usually slender and prismatic and may occur alongside other rare minerals that Mont-Saint-Hilaire is known for.
Due to its rarity and specific geological conditions needed for formation, kupletskite is primarily of interest to serious collectors and mineralogists, especially those focused on rare earth or alkaline complex minerals. It’s not commonly available in large or showy specimens, so even small, well-formed crystals are considered notable.
This beautiful and rare specimen of Kupletskite from world famous Mont-Saint-Hilaire, Québec, would be a great addition to any collection.
Name: Kupletskite
Specimen Size: Miniature-Sized
Dimensions: 30x15x15 mm / 1.2x0.6x0.6 inches
Weight: 1.63 grams / .057 oz
Origin: Mont Saint-Hilaire, Québec, Canada
Amber golden calcite from Mexico is a beautiful variety of calcite known for its rich golden to honey-colored tones. It often forms in sharp, well-shaped crystals like dogtooth clusters or larger, chunky crystals with smooth faces. These pieces can have a soft glow when light passes through them, making them visually warm and inviting. Much of this material comes from regions like Durango and Chihuahua, areas well known for producing high-quality calcite in many colors.
Amber golden calcite is often associated with confidence, warmth, and personal growth. Some believe it helps boost self-esteem and encourages a positive, motivated outlook, making it a helpful stone during times of change or new beginnings. It's also thought to carry a gentle grounding energy, helping balance emotions while keeping one connected to a sense of inner strength.
Name: Amber Golden Calcite Spray
Specimen Size: Large Cabinet-Sized
Dimensions: 105x72x43 mm / 4.1x2.8x1.7 inches
Weight: 424 Grams / 14.9 Ounces
Origin: Mined in Mexico
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