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Vendor:UnderGround Treasures
Malachite pseudomorph after Azurite
A very striking specimen featuring fibrous deep-green Malachite pseudomorphs after bladed Azurite crystals on a white clay matrix. The original Azurite retained its crystal form but was molecularly altered to (or replaced by) Malachite, thus the pseudomorph. The Malachite presents a silky and chatoyant...- $340.00
- $340.00
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Vendor:UnderGround Treasures
Malachite Stalactites
A rare and stunning specimen featuring numerous rich-green, sparkling microcrystalline Malachite stalactites rising from (or in their natural state, descending from . . . ) a botryoidal mass of banded Malachite. I was amazed when I saw this piece with all of the stalactites...- $1,200.00
- $1,200.00
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Vendor:UnderGround Treasures
Malachite with Azurite
A very interesting piece: The matrix front is coated with mostly white to peach-colored miniature Barite blades which have in turn become partially coated with Malachite and lesser Azurite. The contrast really caught my eye, but under magnification it’s even more impressive. There is...- $55.00
- $55.00
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Vendor:UnderGround Treasures
Malachite with Azurite
A very aesthetic piece of velvety Malachite with sparse deep-blue Azurite, all on a brown matrix. In excellent condition. Location: Aouli, Midelt, Morocco Size: 8 x 6.5 x 8 cm- $40.00
- $40.00
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Vendor:UnderGround Treasures
Malachite with Azurite
A very aesthetic piece of velvety Malachite on deep blue Azurite, all on a brown matrix. In excellent condition.- $55.00
- $55.00
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Vendor:UnderGround Treasures
Malachite with Chrysocolla
A very aesthetic, eye-catching specimen of vivid turquoise-blue botryoidal Chrysocolla with dark-green microcrystalline and lighter-green botryoidal Malachite. The banding of the Malachite/Chrysocolla throughout the matrix is really quite stunning. Great piece in excellent condition.- $140.00
- $140.00
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Vendor:UnderGround Treasures
Malachite with Chrysocolla
A nice combination piece featuring a shallow vug lined with deep-green crystalline Malachite with accents of sky-blue Chrysocolla throughout the piece, especially on the back. Great color and contrast. In excellent condition. Location: Katanga Copper Crescent, Katanga, DR Congo Size: 6.5 x 2.5 x 7 cm...- $70.00
- $70.00
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Vendor:UnderGround Treasures
Malachite, Fibrous
A large specimen of fibrous Malachite. The rare “leafy”-like crystals, formed from dense intergrowths of tiny, “fibrous” needles, create a stunning visual with a silky luster and dominate the piece both front and back. In excellent condition. Location: Katanga Province, Zaire Size: 14 x 11.5 x...- $350.00
- $350.00
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Vendor:UnderGround Treasures
Malachite, Fibrous
A large, impressive and beautiful specimen of fibrous Malachite. The rare “leafy”-like crystals, formed from dense intergrowths of tiny, “fibrous” needles, create a stunning visual with a silky luster and dominate the piece both front and back. In excellent condition. Location: Katanga Province, DR Congo...- $380.00
- $380.00
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Vendor:UnderGround Treasures
Mangano Calcite
This is a beautiful specimen of numerous light pink Mangano Calcite Rhombohedra. The piece appears to be very lightly dusted with a microcrystalline Calcite, giving it a satin luster. Bear with me on this thought: When I’ve displayed this piece next to countless shiny...- $175.00
- $175.00
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Vendor:UnderGround Treasures
Mangano Calcite
This specimen hosts a cluster of lavender Calcite scalenohedra on a layer of slightly amethystine crystalline Quartz. It’s unusual to see a specimen with such contrasting halves - the large, lavender Calcite crystals across from the crystalline Quartz - like a line was drawn...- $370.00
- $370.00
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Vendor:UnderGround Treasures
Mangano Calcite
A beautiful piece featuring translucent Mangano Calcite crystals in plumose aggregates. Plumose: “Featherlike aggregate in which many small crystals protrude out of a long, slender one.” (Minerals.net) These pink Calcite crystal formations are an uncommon occurrence, yet these flower-like crystal aggregates are absolutely amazing...- $375.00
- $375.00
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Vendor:UnderGround Treasures
Mangano Calcite
A beautiful piece featuring translucent Mangano Calcite crystals in plumose aggregates. Plumose: “Featherlike aggregate in which many small crystals protrude out of a long, slender one.” (Minerals.net) These pink Calcite crystal formations are an uncommon occurrence, yet these flower-like crystal aggregates are absolutely amazing...- $230.00
- $230.00
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Vendor:UnderGround Treasures
Mangano Calcite
A large cluster of light-pink intersecting bladed Calcite crystals on a matrix covered with lustrous, clear Quartz crystals. The highlight of this piece is a very large, perfectly centered Calcite blade rising above the rest of the blades and positioned perpendicular to them. There...- $230.00
- $230.00
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Vendor:UnderGround Treasures
Mangano Calcite
A very large and beautiful piece featuring translucent miniature Mangano Calcite crystals in plumose aggregates covering the entire surface. Plumose: “Featherlike aggregate" (Minerals.net). These Calcite crystal formations are an uncommon occurrence - they are unique and extremely aesthetic. In excellent condition. Location: Huanzala Mine, Huánuco Department,...- $240.00
- $240.00
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Vendor:UnderGround Treasures
Mangano Calcite
A large plate featuring a layer of lustrous, pink, intergrown Mangano Calcite rhombohedrons on a dark matrix from Tsumeb. Fantastic color, and great contrast with the matrix. In excellent condition. Location: Tsumeb, Namibia Size: 9 x 3.5 x 5.5 cm- $160.00
- $160.00
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Vendor:UnderGround Treasures
Mangano Calcite
A very aesthetic and large piece featuring translucent, compressed rhombohedral crystals of pink Calcite with a soft, silky luster alongside lustrous, colorless needle Quartz on Matrix. I particularly like the contrast of the Calcite next to the Quartz, especially for both mineral’s color and...- $265.00
- $265.00
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Vendor:UnderGround Treasures
Mangano Calcite (Poker Chip)
A large, fascinating specimen of flattened rhombohedral light-pink Calcite crystals in clusters of vertically and horizontally layered crystals in parallel orientation. Often referred to as “poker chip Calcite” or “bladed Calcite.” The mangano Calcite blades populate the entire matrix, creating a stunning aesthetic visual....- $320.00
- $320.00
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Vendor:UnderGround Treasures
Manganoan Calcite
An exceptionally large, hemispherical specimen of rich-pink Manganoan Calcite, exhibiting an inter-grown, fan-shaped, radiating crystal habit on a massive scale, and I mean massive. I haven’t seen a piece this large or well formed before. There are miniature crystals covering the entire front surface...- $1,350.00
- $1,350.00
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Vendor:UnderGround Treasures
Mango Quartz
This piece is simply stunning! It’s large with a grey matrix hosting a dense cluster of Mango Quartz. The Mango Quartz crystals are pristine, exceptionally lustrous, transparent, and host a deep-yellow termination (thus the "mango" association). The large focal crystal literally grew on the...- $390.00
- $390.00
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Vendor:UnderGround Treasures
Mesolite Cyrstals in Vug
Typical Mesolite sprays with their fragile, needle-like crystals are a challenge to transport to say the least. That’s what I love about this piece - all of the Mesolite crystals are within a vug, thus offering protection to the Mesolite crystals from the environment...- $340.00
- $340.00
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Vendor:UnderGround Treasures
Mesolite Hemispheres on Stilbite
This is a really unique piece - just the sheer size of the main Mesolite sphere is impressive. Also, some might expect Mesolite to be a sphere of delicate needles, but in this case it is more globular with spiky protrusions. The contrast between...- $290.00
- $290.00
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Vendor:UnderGround Treasures
Mesolite on Chalcedony
A very large, double-sided vug with both vugs lined with blue-gray Chalcedony hosting numerous radial sprays of white acicular Mesolite crystals. The double vug formation can be clearly seen externally. The featured pictures show a side view of the specimen and then two sets...- $675.00
- $675.00
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Vendor:UnderGround Treasures
Mimetite with Calcite
A very colorful and large piece featuring deep-yellow/golden botryoidal Mimetite crystals on a red-brown matrix, partially coated with transparent Calcite rhombohedrons. The luster with the addition of the Calcite crystals is outstanding and only adds to the depth of the Mimetite’s golden color. A...- $390.00
- $390.00
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Vendor:UnderGround Treasures
Mimetite with Calcite
A very colorful piece featuring deep-yellow/golden botryoidal Mimetite crystals on a red-brown matrix, along with numerous transparent Calcite rhombohedrons scattered throughout the piece. I also find the unusual shape of the piece an added attraction. A very aesthetic piece with great color, contrast, luster...- $125.00
- $125.00
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Vendor:UnderGround Treasures
Muscovite on Albite
A superb large specimen of lustrous, white bladed Albite hosting numerous hexagonal crystals of silvery Muscovite Mica, with the focal cluster featuring several large, intergrown Muscovite hexagonal crystals. The luster, symmetry and contrast is amazing, and the Muscovite crystal centerpiece really stands out! In...- $320.00
- $320.00
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Vendor:UnderGround Treasures
Native Copper
A striking dendritic formation of native Copper crystals from Tsumeb. The crystal structure is quite unique with its feather-like (or leaf-like) formation. A superb and aesthetic piece of native Copper in excellent condition. Location: Tsumeb, Namibia Size: 4.5 x 1 x 2.5 cm- $275.00
- $275.00
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Vendor:UnderGround Treasures
Native Copper
A dendritic branch-like formation of native Copper crystals densely grouped together from Tsumeb. A very aesthetic and showy piece of native Copper in excellent condition. Location: Tsumeb, Namibia Size: 5.5 x 2.3 x 3.7 cm- $160.00
- $160.00
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Vendor:UnderGround Treasures
Native Copper
A large dendritic fan-shaped formation of native Copper crystals densely grouped together. A very aesthetic and showy piece of native Copper in excellent condition. Location: Tsumeb, Namibia Size: 6 x 1 x 4 cm- $140.00
- $140.00
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Vendor:UnderGround Treasures
Native Silver
A very aesthetic piece featuring numerous lustrous (metallic) Silver wires throughout the matrix, with one particularly thick wire right up front and center. A fantastic piece in excellent condition. Location: Durango, Mexico Size: 6.5 x 3 x 4.5 cm- $480.00
- $480.00
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