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Vendor:UnderGround Treasures
Natrolite
A dense cluster of acicular white Natrolite crystals coating a green-hued Basalt. The Natrolite crystals are white at their base and transition to transparent at their terminations. A unique piece with great contrast and in great condition. Location: Millington Quarry, Bernards Township, Somerset County, New...- $40.00
- $40.00
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Vendor:UnderGround Treasures
Okenite
A very large and superb specimen featuring numerous hemispherical clusters (“cotton balls”) of fibrous Okenite crystals with lustrous, white Gyrolite on a dark matrix coated with white Quartz microcrystals. The Okenite balls are of various sizes, and at the front is a intergrown cluster...- $390.00
- $390.00
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Vendor:UnderGround Treasures
Okenite and Gyrolite Geode
A striking specimen of a large Basalt Geode hosting numerous white Okenite and Gyrolite balls. It is a fascinating piece with lots going on inside, yet my favorite feature is the ability to view this Geode from front AND back! Two openings make it...- $375.00
- $375.00
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Vendor:UnderGround Treasures
Okenite with Gyrolite
This huge geode has a lot going on. First there are the “puff-ball” formations of Okenite throughout the geode, but then you’ll notice there is a nodular aggregate of Gyrolite on the left side, and lining the geode is a quartz drusy with several...- $525.00
- $525.00
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Vendor:UnderGround Treasures
Opal, Boulder
A large, iridescent and translucent vein of gemmy opal running through brown sandstone. The purple-hued opal in the center of the vein is particularly appealing. What an eye-catcher! Location: Maynside/Opalton, Queensland, Australia Size: 10 x 6.5 x 5 cm- $240.00
- $240.00
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Vendor:UnderGround Treasures
Opal, Boulder
A large, iridescent and translucent vein of gemmy opal running through brown sandstone. What an eye-catcher! Location: Maynside/Opalton, Queensland, Australia Size: 6.5 x 6 x 6 cm- $220.00
- $220.00
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Vendor:UnderGround Treasures
Opal, Boulder
A large, iridescent and translucent vein of gemmy opal running through brown sandstone. What an eye-catcher! Location: Maynside/Opalton, Queensland, Australia Size: 6.5 x 6.5 x 3.5 cm- $170.00
- $170.00
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Vendor:UnderGround Treasures
Opal, Natural
A stunning natural Opal (some matrix is still attached) from Welo, Ethiopia. Again, this is its natural form, unpolished. To be honest with you, I prefer this natural Opal over the polished version. (Although, I wisely wouldn’t consider giving this to my wife on...- $800.00
- $800.00
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Vendor:UnderGround Treasures
Orca Agate
A unique piece of polished, free-form slightly translucent gray Agate with numerous white Agate inclusions. As hard as it might be to believe, this piece, its color and white splashes are all natural – no dyes, coloring or fillers. A rare and aesthetic display...- $60.00
- $60.00
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Vendor:UnderGround Treasures
Petrified Wood, polished
A unique, large, thick, colorful eye-catching polished slab of Conifer Rainbow petrified wood from the Holbrook, Arizona area. This striking, all natural piece displays deep, varied, saturated colors, wood grain and fossilized bark. The slab face is polished to a mirror finish and displays...- $75.00
- $75.00
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Vendor:UnderGround Treasures
Petrified Wood, polished
A unique, large, thick, colorful eye-catching polished slab of Conifer Rainbow petrified wood from the Holbrook, Arizona area. This striking, all natural piece displays deep, varied, saturated colors, wood grain and fossilized bark. The slab face is polished to a mirror finish and displays...- $75.00
- $75.00
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Vendor:UnderGround Treasures
Petrified Wood, polished
A unique, large, thick, colorful eye-catching polished slab of Conifer Rainbow petrified wood from the Holbrook, Arizona area. This striking, all natural piece displays deep, varied, saturated colors, wood grain and fossilized bark. The slab face is polished to a mirror finish and displays...- $65.00
- $65.00
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Vendor:UnderGround Treasures
Petrified Wood, polished
A unique, large, thick, colorful eye-catching polished slab of Conifer Rainbow petrified wood from the Holbrook, Arizona area. This striking, all natural piece displays deep, varied, saturated colors, wood grain and fossilized bark. The slab face is polished to a mirror finish and displays...- $60.00
- $60.00
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Vendor:UnderGround Treasures
Phantom Quartz
A superb cluster of water-clear, lustrous Phantom Quartz. Phantom Quartz: A Quartz crystal partially coated by another mineral followed by subsequent continued growth over pre-existing crystal. The numerous Quartz crystals in this cluster were previously dusted with red-brown Hematite. The subsequent crystal growth over...- $230.00
- $230.00
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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
Pink Calcite on druzy Quartz
A stunning, large, gemmy pink complex Calcite crystal (complex: a combination of rhombohedral and scalenohedral crystal forms) on a contrasting plate of clear, gemmy Quartz crystals/druzy. Amazing crystal formation, color and contrast! In excellent condition. Size: 10 x 8 x 4.5 cm Location: Yangshan,...- $435.00
- $435.00
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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-looking 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: Pisco...- $150.00
- $150.00
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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-looking 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: Pisco...- $140.00
- $140.00
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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: Pisco...- $130.00
- $130.00
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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: Pisco...- $175.00
- $175.00
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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: 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-looking 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: Ica,...- $95.00
- $95.00
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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-looking 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: Ica,...- $90.00
- $90.00
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Vendor:UnderGround Treasures
Polished Gemstones Collection #1
These 12 polished semi-precious gemstones are all natural and will arrive together in a linen bag for safe keeping. Each gemstone is naturally colored (no dyes) and is a beautiful representation of that gemstone. You will receive all 12 listed gemstones - though gemstones will...- $20.00
- $20.00
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Vendor:UnderGround Treasures
Polished Gemstones Collection #2
These 12 polished semi-precious gemstones are all natural (except for Opalite and Goldstone, which are included to show how striking man-made gems can be as well) and will arrive together in a linen bag for safe keeping. Each gemstone is naturally colored (no dyes)...- $20.00
- $20.00
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Vendor:UnderGround Treasures
Prehnite
This is a massive plate hosting countless miniature Prehnite stalactites or “fingers.” These are not epimorphs where the Prehnite covers the original mineral and the original mineral subsequently dissolves leaving a hollow cast, but rather solid Prehnite stalactites. A very unusual and even rare...- $340.00
- $340.00
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Vendor:UnderGround Treasures
Prehnite
Pristine, translucent, “bubbly” (globular) formations of light-green Prehnite with a silky luster on contrasting matrix. A very unique piece - in excellent condition. Location: Prospect Park, New Jersey, USA Size: 9.5 x 8.5 x 3.5 cm- $115.00
- $115.00
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Vendor:UnderGround Treasures
Prehnite
An aesthetic specimen featuring numerous intergrown spherical formations of translucent mint-green prehnite. These Prehnite spheres are aggregates of slender, radiating crystals clearly seen in the closeup of a contacted sphere on the back. This is a classic specimen and “floater” in excellent condition. Location: Tsumeb,...- $90.00
- $90.00
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Vendor:UnderGround Treasures
Prehnite
A large, highly translucent specimen featuring numerous mint-green Prehnite crystals in interconnected clusters. The crystals are distinct and create a sparkly luster due to the numerous crystal faces. Great piece in excellent condition. Location: Tsumeb, Namibia Size: 13 x 4.5 x 9 cm- $270.00
- $270.00
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Vendor:UnderGround Treasures
Prehnite after Calcite
A large specimen featuring a druze of mint-green, translucent Prehnite pseudomorph after (replaced) well-defined tabular crystals of Calcite. This is an unusual (some say rare) find and there’s not a lot of it out there. This piece is very aesthetic and has no damage....- $320.00
- $320.00
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