A very aesthetic piece that features a plate first coated with peach-colored microcrystalline Heulandite, and then subsequently completely covered in gemmy, transparent, Apophyllite crystals. But the focal point of the piece is the large, lustrous, pseudocubic Apophyllite crystal (2.3 cm) with modified corners and...

A large Geode lined with pink-orange Heulandite crystals with a partial coating of miniature, colorless Stilbite crystals, hosting a large (4.5 cm) translucent, soft-yellow Calcite rhombohedron. The Heulandite and Stilbite is colorful with a sparkling luster, while the Calcite rhomb has a satin luster....

A very large cabinet-size specimen hosting numerous lustrous, transparent, mint-green pseudocubic Apophyllite crystals with modified corners (up to 2.6 cm), along with smaller, colorless and nearly transparent Stilbite crystals (1.5 cm), all on a bed of white miniature Huelandite crystals on a dark gray...

A very large aesthetic specimen hosting numerous radiating flower-like clusters of Calcite scalenohedra. The Calcite crystals are soft-white with minor reddish Hematite inclusions and have a pearly luster. Even the matrix, with colorless Quartz, lustrous Galena and Chalcopyrite, adds to the overall aesthetics of...

An aesthetic piece featuring large, highly translucent, mint-green intersecting cubic Fluorite crystals on massive Fluorite matrix hosting a dense cluster of lustrous, translucent, yellow-brown Barite crystals covering nearly the entire front of the Fluorite. The contrast between the two generations of crystal growth is...

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...

A beautiful specimen of vivid turquoise-blue botryoidal Chrysocolla with dark-green microcrystalline and botryoidal Malachite. A very aesthetic and colorful piece! Location: Lupoto Mine, Katanga, DR Congo Size: 9 x 9 x 6.5 cm

Deep-blue crystallized Azurite with minor rich-green fibrous Malachite. Great symmetry and contrast in both color and luster - very nice specimen in great condition. Location: Aouli, Medelt, Morocco Size: 8 x 4.5 x 4 cm

This specimen features both a larger and smaller cluster of jet-black, lustrous Hubnerite crystals, both centered on a plate of highly translucent to transparent Quartz crystals. At the base of both clusters are radiating clusters of miniature Quartz crystals. There’s also a well formed...

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.

A perfectly centered crystal of pink-red Ruby in contrasting white Marble matrix. The Ruby crystal is lustrous, highly translucent and nicely terminated. A very aesthetic specimen with a beautifully colored Ruby crystal perfectly balanced - a great piece in excellent condition.

A beautiful piece featuring numerous lustrous, transparent to translucent golden rhombohedral crystals of Barite on a crystalline gray-Quartz matrix. The crystals are sharp and exhibit zoning and the piece has great balance. Pieces like this from the closed Sherman Mine in Colorado are hard...

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...

A very large, single, lustrous and sharp Amethyst crystal rising above an Amethyst crystal base. The focal Amethyst crystal is well formed and sharply terminated with zones of darker-purple Amethyst color inside. A great aesthetic piece, especially with the zoned color, the clarity and...

A large and extremely aesthetic cluster of translucent, snow-white elongated Quartz crystals on white bladed Albite and minor Pyrite. In addition to the dozen or so larger, elongated Quartz crystals, there are many more of smaller Quartz crystals filling in at the base. A unique,...

A large, lustrous partial cube of colorless Fluorite with internal purple zoning and subsequent light blue zoning, which gives the illusion of a light-blue colored Fluorite cube at first glance. The zoning is beautiful and quite striking. The Fluorite cube has modified and stepped...

An aesthetic cluster of diverging Hedenbergite-included Quartz crystals. The crystals are lustrous and translucent and display a grayish-green color due to the Hedenbergite inclusions. The crystals also host an overgrowth of smaller Quartz crystals all around the prism faces of the larger crystals up...

This is a large, beautiful and striking piece that features a vuggy Quartz matrix hosting numerous clusters of translucent, lustrous apple-green Pyromorphite crystals throughout the piece. There are Pyromorphite crystals on all sides of the matrix. There is a particularly dense band of Pyromorphite...

A colorful specimen of lustrous, translucent, golden botryoidal Chalcedony in a Flint vug. A unique, aesthetic piece with great color, luster and form. In excellent condition. Location: Etretat, Seine-Maritime, Upper-Normandy, France Size: 7 x 5.6 x 4.5 cm

A large, beautiful specimen featuring a cluster of lustrous, transparent smoky Quartz crystals with thin, needle-like crystals of Rutile included inside the Quartz crystals. The large, focal smoky Quartz crystal has been polished on two of the six termination faces to allow greater visibility...

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...

A beautiful and aesthetic flower-like cluster of lustrous, gemmy, sharp, transparent Amethyst crystals on matrix. This cluster of intergrown and diverging crystals are colorless at the base and eventually progress to a deep-purple termination. Notice that there is miniature version of the large cluster...

A superb specimen featuring a large (9cm)  slender pristine Amethyst crystal on transparent, colorless Quartz crystals on the vug surface of dark-gray matrix. The Amethyst crystal is flawless and lustrous and the color progresses from colorless at the base to purple at the termination....

Lavender Amethyst crystals on milky Quartz crystal matrix. The Amethyst crystals are sharp and lustrous and exhibit a deeper purple color at the terminations, typical for the locality. An aesthetic piece with great contrast and luster. In excellent condition. Location: Diamond Hill Quartz Mine, Antreville,...

Miniature Lavender Amethyst crystals on milky Quartz crystal druze. The Amethyst crystals are sharp and lustrous and exhibit a deeper purple color at the terminations which is typical for the locality. An aesthetic piece with great contrast and luster. In excellent condition. Location: Diamond Hill...

A large, aesthetic specimen of lustrous, brilliant-black twinned Sphalerite crystals with partial overgrowth of translucent, off-white druzy Calcite crystals. The Sphalerite crystals are well-formed and sharp with a brilliant metallic luster. A beautiful piece in excellent condition. Location: Trepca Mine, Mitrovica, Kosovo Size: 10 x 6.5...

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...

A very large, highly translucent, pristine crystal of golden Scheelite. This large octahedral crystal sits on a matrix of lustrous silvery Muscovite crystals and contrasts nicely with the matrix. There is also a second, smaller crystal of Scheelite of the same quality. A classic...

An amazing specimen featuring lustrous, transparent, light-green cubic Fluorite crystals with dark purple phantom zones throughout - there are numerous intergrown Fluorite cubes, and many of the cubic crystal faces themselves are composed of multiple parallel cubic crystal faces. The piece has seemingly countless crystals...

This piece is almost beyond description - it starts with a massive plate of green Celadonite (26 cm long!) which is then host to numerous clusters of lustrous, colorless to purple Amethyst crystals that resemble multiple “flowers.” These Amethyst crystals are denser and thicker...