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Vendor:UnderGround Treasures
Selenite "Flower"
A beautiful specimen featuring two pristine, lustrous, golden Selenite “petals” on a cluster of darker, smaller Selenite crystals. One of the petals is exceptionally large while the matrix is smaller, letting the Selenite easily become the focal point of the piece. A very aesthetic...- $225.00
- $225.00
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Vendor:UnderGround Treasures
Amethyst Geode
A very unique (if not rare) Geode - it’s actually a very large “tube” that is over a foot in length (31cm). The entire interior of the tube is covered with lustrous, deep-purple Amethyst crystals. This is a really eye-catching and impressive piece! Location: Ametista...- $495.00
- $495.00
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Vendor:UnderGround Treasures
Red Agate
Forming in cavities in Rhyolite, these unique and beautiful Red Agates (also referred to as Crater Agates and Red Fox Agates) are colored deep red from imbedded iron oxides and form in a rounded nodular habit (note that this rich red color is completely...- $125.00
- $125.00
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Vendor:UnderGround Treasures
Red Agate
Forming in cavities in Rhyolite, these unique and beautiful Red Agates (also referred to as Crater Agates and Red Fox Agates) are colored deep red from imbedded iron oxides and form in a rounded nodular habit (note that this rich red color is completely...- $175.00
- $175.00
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Vendor:UnderGround Treasures
Red Agate
Forming in cavities in Rhyolite, these unique and beautiful Red Agates (also referred to as Crater Agates and Red Fox Agates) are colored deep red from imbedded iron oxides and form in a rounded nodular habit (note that this rich red color is completely...- $225.00
- $225.00
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Vendor:UnderGround Treasures
Fluorite
This large piece features botryoidal translucent purple Fluorite with a soft, almost silky luster, on a contrasting brown matrix. The piece is quite stunning and really catches your eye - it’s not a common habit and with all of the varying contours in the...- $240.00
- $240.00
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Vendor:UnderGround Treasures
Amethyst with Laumontite
A very aesthetic piece featuring a couple of focal Amethyst crystals along with a large centered beige Laumontite blade. Both Amethyst crystals have great luster, pristine terminations, and striking purple color, with the deepest purple found at the points. In excellent condition. Location:Â Piedra Parada,...- $110.00
- $110.00
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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
Sphalerite with Calcite
A striking piece feature numerous intersecting rosettes of translucent, creamy white, flattened, lenticular Calcite crystals perfectly centered on top of a jet-black cluster of Sphalerite crystals. The silky luster of the Calcite on top of the metallic luster of the Sphalerite, along with the...- $260.00
- $260.00
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Vendor:UnderGround Treasures
"Grape Agate" Chalcedony
“Grape Agate” is the name used to describe a purple, botryoidal form of Chalcedony, coming to the market beginning in 2017. This particular piece is quite large, has excellent color, beautiful botryoidal aggregates and a really balanced and unique formation with coverage on all sides. In...- $530.00
- $530.00
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Vendor:UnderGround Treasures
Cobalto Calcite
A large specimen featuring lustrous pink transparent to translucent Calcite crystals lining a shallow vug. The pink color is due to Cobalt impurities. In addition to the main vug you can see numerous inclusions of Cobalto Calcite throughout the matrix, including a Cobalto Calcite...- $150.00
- $150.00
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Vendor:UnderGround Treasures
Astrophyllite
A large piece with dense coverage of golden-brown Astrophyllite blades on a contrasting matrix of white Quartzite. The size, contrast and metallic luster make for a unique and aesthetic specimen. In excellent condition. Location:Â Eveslogchorr Mt., Khibiny Massif, Murmansk Oblast, Russia Size:Â 6 x 3 x...- $90.00
- $90.00
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Vendor:UnderGround Treasures
Astrophyllite
A large piece with dense coverage of golden-brown Astrophyllite blades on a contrasting matrix of white Quartzite. The size, contrast and metallic luster make for a unique and aesthetic specimen. In excellent condition. Location: Eveslogchorr Mt., Khibiny Massif, Murmansk Oblast, Russia Size: 8 x 4 x...- $110.00
- $110.00
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Vendor:UnderGround Treasures
Amethyst
Beautiful, transparent and lustrous Veracruz Amethyst crystals on matrix. The piece features a focal Amethyst crystal that rises from the center of the cluster. Great color, clarity, contrast and symmetry. In excellent condition. Location:Â Piedra Parada, Las Vigas, Veracruz, Mexico Size:Â 6 x 5.5 x 4.5...- $90.00
- $90.00
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Vendor:UnderGround Treasures
Smoky Quartz, Jacaré
A beautiful specimen of Jacaré Smoky Quartz, that is, classic parallel crystal growth as seen at the top of the specimen. A very unique specimen not only for the Jacaré crystal growth, but for the large flat translucent to transparent smoky plate that the...- $195.00
- $195.00
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Vendor:UnderGround Treasures
Hemimorphite with Calcite
A cluster of numerous lustrous, transparent colorless bladed Hemimorphite crystals with translucent to transparent, well formed platy/lenticular Calcite crystals on a dark brown Limonite matrix. Great contrast, crystal formation and symmetry. In excellent condition. Location:Â Mina Ojuela, Mapimi, Durango, Mexico Size:Â 7 x 5 x 7...- $75.00
- $75.00
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Vendor:UnderGround Treasures
Calcite
A very aesthetic piece featuring a large cluster of highly translucent to transparent, well formed platy/lenticular Calcite crystals on a dark brown Limonite matrix. There is a slight reddish-brown tinting to the Calcite crystals, and upon closer inspection (see closeup pic), reddish Hematite inclusions...- $95.00
- $95.00
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Vendor:UnderGround Treasures
Apophyllite, Stilbite on Heulandite
A very aesthetic piece featuring a matrix densely coated with miniature, beige Stilbite crystals with a cluster of lustrous, larger light-beige Stilbite crystals at the base, all hosting a crown of transparent, mint-green Apophyllite pseudocubic (rectangular) crystals. Great contrast, color, symmetry and luster. In...- $95.00
- $95.00
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Vendor:UnderGround Treasures
Heulandite with Stilbite
A large piece hosting a dense covering of rare orange hemispherical Heulandite crystal clusters with a secondary layer of beige Stilbite crystals. The color contrast between the Stilbite and Heulandite and the pearly luster of the Stilbite creates a very aesthetic and unique specimen....- $225.00
- $225.00
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Vendor:UnderGround Treasures
Heulandite with Stilbite
A large piece hosting a dense covering of rare orange hemispherical Heulandite crystal clusters with a secondary layer of beige Stilbite crystals. The color contrast between the Stilbite and Heulandite and the pearly luster of the Stilbite creates a very aesthetic and unique specimen....- $375.00
- $375.00
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Vendor:UnderGround Treasures
Quartz
A large, beautiful and gemmy Quartz crystal - lustrous, transparent and water-clear with a pristine termination. In excellent condition! Location:Â Minas Gerais, Brazil Size:Â 6 x 5.5 x 9 cm- $90.00
- $90.00
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Vendor:UnderGround Treasures
Amethyst Geode (2 halves)
This piece goes to show you can’t judge a book by its cover. To see these two halves together, it is one of the uglier rocks I’ve ever seen. Then to see it split open and see the lustrous, purple Amethyst crystals lining the...- $125.00
- $125.00
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Vendor:UnderGround Treasures
Vanadinite
A large specimen featuring a dense covering of bright red, translucent and gemmy Vanadinite crystals on a light-colored, contrasting matrix. Great color, contrast and luster - in excellent condition. Location:Â Mibladen, Morocco Size:Â 17 x 6 x 9 cm- $90.00
- $90.00
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Vendor:UnderGround Treasures
Pink Apophyllite
A very unique piece that features a very large, thin plate, or crust of highly translucent, gemmy, pink (pink-ish) crystalline Apophyllite. The luster/sparkle of this piece is quite amazing! A very aesthetic piece with great color, luster and size. In excellent condition. Location: Nashik, India...- $320.00
- $320.00
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Vendor:UnderGround Treasures
Rhodochrosite
A very large and beautiful piece that features a prominent vein of Rhodochrosite in a matrix of Quartz, Silver Tetrahedrite, Galena and Chalcopyrite. The Rhodochrosite is translucent, the color is a classic reddish-pink and the rhombohedral cleavage can be clearly seen as result of...- $240.00
- $240.00
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Vendor:UnderGround Treasures
Spessartine with Smoky Quartz
This piece features transparent to translucent, pristine smoky Quartz crystals with their sides and matrix overgrown with sharp, transparent, lustrous deep-orange Spessartine Garnet crystals. The large, prominently centered Smoky Quartz crystal is outstanding and really brings attention to the piece. The contrast, symmetry, luster...- $535.00
- $535.00
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Vendor:UnderGround Treasures
Malachite
A large piece featuring green, fibrous, hemispherical aggregates of Malachite displaying a chatoyant, silky luster (Chatoyancy: an optical reflectance effect, as in “cat’s eye,” arising from the fibrous structure of a material . . . ). A little wordy, I know - but it’s...- $325.00
- $325.00
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Vendor:UnderGround Treasures
Hematite included Quartz
A striking piece featuring a large, single, lustrous translucent to transparent red-tinted (microscopic Hematite inclusions) Quartz crystal with a cluster of Quartz crystals at its base. With clean faces, facets and a pristine termination, this Quartz crystal is outstanding and very aesthetic. In excellent...- $220.00
- $220.00
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Vendor:UnderGround Treasures
Pink Opal
From a relatively new discovery in Peru - this beautiful, all natural pink Opal has a botryoidal-like form, with a soft, satiny luster. It is gem quality and hard to find - a striking piece with great color and luster. In excellent condition. Location:Â Pisco...- $225.00
- $225.00
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Vendor:UnderGround Treasures
Pink Opal
From a relatively new discovery in Peru - this beautiful, all natural pink Opal has a botryoidal-like form, with a soft, satiny luster. It is gem quality and hard to find - a striking piece with great color and luster. In excellent condition. Location:Â Pisco...- $175.00
- $175.00
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