A pristine, transparent, light amber-colored, doubly terminated, twinned and complete Calcite crystal with Chert matrix attached. A beautiful, highly lustrous and complete twinned Calcite crystal with glass-like transparency. A beautiful piece! Location: Elmwood Mine, Gemmy Pocket, Carthage, Smith County, Tennessee, USA Size: 9.5 x 6 x 4.5...

This piece hosts two gemmy, lustrous, transparent clusters of green Apophyllite crystals on numerous clusters of pinkish, translucent Stilbite crystals, all on a matrix of black, sparkly Chalcedony. A beautiful and showy piece with great contrast, color, luster and balance. In excellent condition. Location: Jalgaon,...

This large piece hosts a gemmy, lustrous, transparent cluster of rich-green Apophyllite crystals on numerous clusters of pinkish, translucent Stilbite crystals, all on a matrix of black, sparkly Chalcedony. The formation and balance of this piece is particularly impressive: it features a large, sphere-like...

A striking piece featuring numerous clusters of lustrous, translucent, pinkish tabular Heulandite crystals on flat white, fibrous Mordenite. The contrast between the pearly luster and pinkish color of the Heulandite crystals against the flat luster and bright white color of the Mordenite and the...

A large dendritic formation of native Copper crystals densely grouped together. A very aesthetic and showy piece of native Copper in excellent condition. Location: Itauz Mine, Djezkazgan, Kazakhstan Size: 8.5 x 3.2 x 15 cm

A beautiful, pristine, lustrous and transparent crystal of Quartz with internal phantom growth patterns of pink-purple Amethyst Quartz. No damage. Location: Goboboseb Mountains, Brandberg area, Erongo Region, Namibia Size: 2.5 x 2.5 x 6 cm

A beautiful specimen of lustrous, radiating clusters of transparent green Apophyllite crystals on a plate of contrasting Stilbite crystals. These unusual Apophyllite crystals have flat terminations and the radiating, round-like clusters are incredibly aesthetic. They are also the reason for the nickname, “disco ball” Apophyllite....

A large, beautiful and lustrous specimen of Jacaré Smoky Quartz. The crystals are well formed, transparent and have a rich “smoky” color with darker crystal terminations and outer edges. The crystals are aligned in a unique, parallel orientation which is what gives this particular...

This specimen features a white Kaolinite matrix hosting three overlapping disc-shaped concretions of royal-blue Azurite crystals. The Azurite grew between layers in the Kaolinite and due to extreme pressure the Azurite was compressed and forced to grow laterally, radiating outward, thus frequently forming disc-shaped...

This specimen features a white Kaolinite matrix hosting a single disc-shaped concretion of royal-blue Azurite crystals. The Azurite grew between layers in the Kaolinite and due to extreme pressure the Azurite was compressed and forced to grow laterally, radiating outward, thus frequently forming disc-shaped...

Bright yellow-metallic Gold on white Quartz. The Gold is easily visible to the unaided eye and contrasts beautifully with the white Quartz. Gold specimens from Ireland are highly sought after and thus difficult to find. Location: B Vein, Lecanvey Prospect, Croagh Patrick, County Mayo, Ireland...

Gold on white Quartz. The Gold is visible to the unaided eye and contrasts nicely with the white Quartz. Gold specimens from Ireland are highly sought after and thus difficult to find. Location: Benlugmore, Bohaun, Galway County, Connacht, Ireland Size: 6.8 x 4 x 2.5 cm...

The specimen features a pristine, lustrous, transparent amber-colored Barite crystal (2.5 cm) on a matrix of Limestone and miniature golden Calcite crystals. There are another half-dozen smaller Barite crystals throughout the piece. I am a huge fan of fine crystals on matrix specimens, and...

A very aesthetic and large specimen consisting of numerous intergrown, highly translucent vivid-green octahedral Fluorite crystals. There is also parallel crystal growth resulting in some unusual and fascinating crystal terminations (see pics). A superb piece with outstanding color and crystal growth and a beautiful...

This piece is exceptional. It features a large (2.7 cm), lustrous, transparent complex Calcite crystal, a pair of translucent, peach-colored intersecting Stilbite crystals, and numerous, gemmy, colorless, doubly-terminated Apophyllite crystals, all set on a matrix of black, stalactitic Chalcedony. It’s just an amazing piece...

A rare and beautiful specimen featuring a cluster of deep-green, radiating Heulandite crystals with a small matrix of Stilbite and Apophyllite attached. The Heulandite crystals are well formed and exhibit a flower-like radial formation. A rare and very collectable color for this otherwise common...

An aesthetic piece featuring two spherical formations of aqua-blue Chrysocolla with a partial encrusting of Chrysocolla in a shallow cavity along the front of the matrix. In addition there are some lustrous, dark-green acicular (needle-like) Brochantite crystals that along with the Chrysocolla banding throughout the...

A cabinet-sized specimen of matrix hosting a dense cluster of lustrous, translucent, rich-green Dioptase crystals. Truly a beautiful mineral, and this specimen hosts some of the most lustrous and richly colored Dioptase to be found! In excellent condition. Location: Altyn-Tyube Mine, Karagandy Province, Kazakhstan Size: 8...

A cabinet-sized specimen of matrix hosting a perfectly centered dense cluster of lustrous, translucent, rich-green Dioptase crystals. Truly a beautiful mineral, and this specimen hosts some of the most lustrous and richly colored Dioptase to be found! Location: Altyn-Tyube Mine, Karagandy Province, Kazakhstan Size: 7.5 x...

A superb, large single crystal of translucent, lustrous deep-blue Azurite. The Azurite crystal face is slightly striated and has a couple of minor occurrences of green fibrous Malachite, while the bottom is entirely fan-shaped fibrous Malachite. The contrast between the Azurite and Malachite is...

A superb specimen of lustrous, apple-green hexagonal Pyromorphite crystals with flat terminations on a contrasting Limonite. Pyromorphite crystals this large (over 1 cm) and well formed are the exception rather than the rule. Outstanding contrast and crystal formation. A beautiful specimen in excellent condition....

Numerous, lustrous, highly translucent green modified cubo-octahedral Fluorite crystals on massive Fluorite. First, the color is striking - not your typical green Fluorite, but more of a deep emerald green. Second, the crystals at first glance appear to be botryoidal in formation, but at...

This is an extraordinarily large and beautiful piece, featuring numerous sharp, lustrous and highly translucent light-pink Halite crystals on a darker-pink massive Halite matrix. To quote, “Surprising as it seems, microscopic halophilic (salt loving) bacteria live in this highly concentrated brine and when they...

This large piece is a nice representative specimen from the famous Rogerley Mine, UK locality. The crystals are transparent, green and lustrous, covering the majority of the matrix, and many are twinned. There are a few very minor dings, but they don’t detract at...

An exceptional, very large specimen featuring numerous large micro-stepped cubo-octahedral Fluorite crystals (the largest measuring over 6 cm), on matrix. The Fluorite crystals are transparent with a light-green color and satin luster, and perfectly spaced throughout the piece. Through the faces that are non-stepped...

A large, exceptional cluster of gemmy, transparent complex Calcite crystals on a reddish-brown matrix. Amazing contrast, luster, crystal formation and symmetry. A great piece in excellent condition. Location: Xiang Hua Pu, Hunan Province, China Size: 13.5 x 9 x 8 cm

A superb specimen of Cavansite. This piece features a half-dozen deep-blue spherical rosettes of Cavansite on a contrasting microcrystalline Stilbite covered matrix. This Cavansite has such an intense, vivid blue color that it almost seems fake, but it’s very real! The challenge is getting...

A very aesthetic piece featuring numerous intersecting mint-green, highly translucent, flattened rhombohedral Calcite crystals on matrix. The Calcite crystals have a soft, waxy luster with nice striations. The green color with the crystal formation is very uncommon and quite appealing. A great piece in...

This piece features two translucent to transparent, intersecting flattened rhombohedral Calcite crystals with an epitaxial layer of Pyrite. Epitaxy: Growing a crystal layer of one mineral (Pyrite) on the crystal base of another mineral (Calcite) in such a manner that its crystalline orientation is...

Multiple clusters of lustrous, transparent to translucent, mint-green, intergrown zoned Fluorite cubes on a drusy white Quartz coated matrix. The cores of the Fluorite cubes tend to be more translucent while the outer zones more transparent. An outstanding specimen with great contrast, crystal formation...