A large cluster of elongated colorless/white translucent scalenohedral Calcite crystals on a Chlorite dusted Quartz matrix. The contrast between the satin luster and clear/white color of the Calcite against the dark-green (practically black) color and matte luster of the Chlorite coated Quartz is about...

A very large specimen featuring lustrous, white crystalline Quartz hosting a large, sharp, translucent, cream-colored Calcite crystal. The Calcite crystal is prismatic with a flattened triangular termination (fun trivia stuff), has a smooth, velvety luster, and is perfectly centered. A nice piece with great...

This piece features a large translucent Quartz vug lined with miniature milky-Quartz crystals hosting a similarly large, lustrous and highly translucent to transparent complex Calcite crystal. The vug has safely protected the Calcite crystal, allowing for its pristine condition. A very aesthetic piece in...

An exceptionally large and striking piece featuring a huge lustrous, cognac-colored Calcite twin on a large “tail” of colorless to white druzy Quartz. The crystal faces are pristine, with visible striations and sharp edges. The luster appears “wet”. The contrast between the Calcite and...

A large, colorful and aesthetic piece that features a cluster of large, white interconnected Scolecite spherical formations hosting numerous sphere-like aggregates of highly translucent, lustrous amber-colored Calcite. This piece has great color, luster and symmetry. A very showy and unique piece. Free standing and...

A large, colorful and aesthetic piece that features a cluster of large, white interconnected Scolecite spherical formations hosting a large cluster of interconnected sphere-like aggregates of highly translucent, lustrous amber-colored Calcite. This piece has great color, luster and symmetry. A very showy piece in...

This is a unique, beautiful large piece that features black, lustrous Sphalerite (with Pyrite) hosting a first layer of miniature translucent, white Calcite rhombohedral crystals, then a second layer of larger, layered, pink Manganoan Calcite crystals. The end result is a piece with amazing...

An aesthetic, cabinet-sized specimen featuring a colorful matrix hosting a perfectly centered dense cluster/ridge of lustrous, transparent to translucent, rich-green Dioptase crystals. Truly a beautiful piece with amazing color, luster, gemminess and balance! Size: 15 x 6 x 11.5 cm 15 x 6 x...

This extra large piece hosts 2 generations of Calcite: the first generation is featured on the front which is a layer of bright white, highly lustrous Calcite crystals, and then on the side and back is a second generation of beige colored microcrystalline Calcite...

What started out as a large, highly translucent yellow Calcite crystal eventually became overgrown on the sides and back with doubly-terminated transparent colorless Apophyllite crystals. The end result is a gemmy, highly vitreous, contrasting and highly aesthetic specimen of Calcite with Apophyllite. I’ve only...

A very lustrous piece featuring numerous transparent, stair-stepped Calcite Rhombs on an olive-green partial Duftite nodule. Upon closer look, the Calcite has a hint of a cobaltoan hue to it, which when added to the luster and the olive-green Duftite, makes for a very...

A large plate of Galena and Chalcopyrite on a matrix hosting two prominent, transparent to translucent, light yellow nail-head Calcite crystals. The Calcite crystals are complete and undamaged and contrast very nicely with the metallic luster of the Galena/Chalcopyrite infused matrix. There are a...

An exceptionally large cluster of intersecting lustrous, reddish lenticular Calcite crystals. The Calcite crystals are sharp and striated, with the majority having light to heavy red coloring due to Hematitic inclusions. This is a striking piece with lots of luster! In excellent condition. Location: Daye...

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...

A large cluster of pink, mangano intersecting bladed Calcite crystals with large, lustrous, clear Quartz crystals, all in a large, protected vug. The highlight of this piece is a very large, perfectly centered Calcite blade rising above the rest of the blades along with...

A pristine, transparent, gemmy, lustrous, perfectly-terminated golden Calcite crystal hosting blood-red Realgar crystals near the base. A beautiful and very aesthetic specimen in excellent condition. Location: Shimen County, Chanhde Prefecture, Hunan Province, China Size: 7 x 5.5 x 5 cm

Great contrast - there is of course the golden, almost transparent lenticular Calcite crystals on a matrix covered with miniature white translucent scalenohedral Calcite crystals. If that’s not enough, near the front you’ll see Stibnite crystals intermixed with the matrix. Great piece with no...

This piece has great contrast with translucent to transparent lenticular Calcite crystals on a dark matrix. The Calcite crystals, especially the ones in front, are pristine and gemmy,  while the one in back has several Stibnite inclusions (see pics). This is an attractive and...

A large, beautiful transparent to translucent rhombohedral Calcite crystal, 3.5 cm on edge, with intersecting Stilbite crystals on a matrix of snow-white microcrystalline Quartz, with minor Apophyllite. The Calcite crystal has a satin luster  and because of the transparency, the intersecting Stilbite crystals can...

A lustrous cluster of light brown, interpenetrating Calcite rhombohedrons on a druse of sparkling miniature colorless Stilbite crystals over white Calcite. A very nice specimen with great color, luster, contrast and balance. In excellent condition. Location: Jalgaon, Maharashtra, India Size: 9.5 x 8 x 4 cm...

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 extra-large specimen features numerous clusters of highly translucent, tangerine-colored, flower-like scalenohedral Calcite crystals on matrix. I especially like the contrast of the smaller vertical flower-like clusters with the larger, horizontal singular crystals on the base. The color, the luster and the aesthetics makes...

An extremely large, elongated Geode, hosting a large, beautiful, transparent golden-tinted twinned Calcite crystal on the right side along with numerous pink-orange, lustrous Stilbite crystals, including one very large crystal on the left side, all on a bed of Chalcedony. Most of the Stilbite...

A large and extremely aesthetic piece that features a base of Chalcedony coated Calcite hosting a couple of complex, lustrous, water clear Calcite crystals with four intersecting, perfectly formed pink-orange Stilbite crystals. The crystal formation, color, contrast, luster and symmetry are all amazing! It...

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...

This cabinet sized piece features a dense coating of black, lustrous, sharp Cassiterite crystals on a rust-colored matrix from the famous Viloco Mine in Bolivia. The Cassiterite crystals are large, very sharp and mirror-like and contrast amazingly with the matrix. A very aesthetic piece...

Black, lustrous, sharp Cassiterite crystals on colorless to white Quartz matrix from the famous Viloco Mine in Bolivia. The Cassiterite crystals are large, very sharp and mirror-like and contrast amazingly with the white Quartz matrix. A very aesthetic piece in excellent condition. Location: Viloco Mine,...

This cabinet-sized piece features numerous black, lustrous, sharp Cassiterite crystals on a matrix of clear, microcrystalline Quartz from the famous Viloco Mine in Bolivia. The Cassiterite crystals are exceptionally large, very sharp and mirror-like and contrast nicely with the microcrystalline Quartz. The crystal edges...

This cabinet-sized piece features a dense coating of black, lustrous, sharp Cassiterite crystals with minor clear Quartz on matrix from the famous Viloco Mine in Bolivia. The Cassiterite crystals are exceptionally large, very sharp and mirror-like and contrast nicely with the Quartz crystals. The...

This aesthetic piece features a matrix of clear, crystalline Quartz hosting two black, lustrous, mirror-like Cassiterite crystals. The contrast is amazing! The large, focal Cassiterite crystal is striking, especially against the Quartz backdrop. In excellent condition. Location: Viloco Mine, Loayza Province, La Paz Department, Bolivia...