Garnets are found in metamorphic rocks, and this particular piece hosts a large and striking Garnet crystal with large and well-defined crystal faces, along with numerous small Garnet crystals scattered throughout the piece. This piece is eye-catching with great contrast and a large, well-defined,...

Really interesting piece: Several small Calcite crystals dusted with microcrystalline Quartz deposited on a plate of Amethyst Quartz crystals, also dusted with microcrystalline Quartz. This makes for incredible luster, great contrast and an unusual yet intriguing, eye-catching piece - I have yet to see...

A fascinating specimen of golden Rutile “needles” emanating from dark, mirror-like metallic Hematite. This relationship between Rutile and Hematite is referred to as epitaxial growth. Epitaxy: Growing a crystal layer of one mineral (Rutile) on the crystal base of another mineral (Hematite) in such...

Pyrite cubes never get old. There are some that insist these things are fabricated, but they are completely natural, and thus a favorite of collectors. This particular piece hosts a huge 3.7 cm Pyrite cube, and it is perfect - just amazing! Location: Navajun, Spain...

Pyrite cubes never get old. There are some that insist these things are fabricated, but they are completely natural, and thus a favorite of collectors. This particular piece hosts a huge 4 cm Pyrite cube. There are two minor contacts (the one on top...

Pyrite cubes never get old. There are some that insist these things are fabricated, but they are completely natural, and thus a favorite of collectors. This particular piece hosts a huge 4 cm Pyrite cube, and it is perfect - just amazing! Location: Navajun, Spain...

Pyrite cubes never get old. There are some that insist these things are fabricated, but they are completely natural, and thus a favorite of collectors. This particular piece hosts a large 3 cm Pyrite cube, and it is perfect - just amazing! Location: Navajun, Spain...

Pyrite cubes never get old. There are some that insist these things are fabricated, but they are completely natural, and thus a favorite of collectors. This particular piece hosts a huge 4 cm Pyrite cube, and it is perfect - just amazing! Location: Navajun, Spain...

Pyrite cubes never get old. There are some that insist these things are fabricated, but they are completely natural, and thus a favorite of collectors. This particular piece hosts a 2.5 cm Pyrite cube and a large 3 cm intergrown cube - both perfect...

This is a miniature featuring vivid turquoise-blue botryoidal Chrysocolla over Malachite with the layering beautifully displayed on the edges. In very good condition. Location: L'Etoile du Congo Mine, Lubumbashi, Katanga, DR Congo Size: 4.2 x 2.5 x 2 cm

The Fluorite crystal formation on this piece is more intergrown and “highly modified” although I do see some cubic lines throughout the piece, but what impressed me was the transparency of these Fluorite crystals - just like glass with a light green tint. Great vitreous...

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...

I’m aware that almost all Citrine Quartz is heat treated. And so is this piece. Similar to irradiated “Smoky Quartz,” I make Citrine available if the crystal formation is sharp and cleanly terminated simply because there are those who love the color and desire...

This is an exceptionally large specimen of a classic “bowtie” Stilbite, nearly 5” (12.5 cm) wide! It is perfect, and I don’t say that often. It has just a small bit of Heulandite matrix attached to the bottom to give it balance and contrast. One...

An elongated Calcite crystal with multiple terminations. Great luster and color and no damage. Location: Yunnan Province, China Size: 9.8 x 3.2 x 1.8 cm

I’m not sure where to begin with this piece - it’s another one of my favorites and I notice something new every time I study it. Besides being huge, the most obvious feature are the Stibnite clusters - their delicateness, metallic luster and flower-like...

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....

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...

This large piece features botryoidal translucent purple Fluorite with a soft, almost silky luster. The main face is quite stunning, but almost as stunning are all of the parallel cavities that are likewise coated with the same botryoidal purple Fluorite. You could examine this...

A very aesthetic piece that features several deep purple, intergrown and highly translucent to transparent Fluorite cubes with adjoining Arsenopyrite crystals. The contrast between the two mineral colors and Fluorite’s vitreous luster vs Arsenopyrites bright metallic luster create a very eye-catching piece. Excellent condition....

This unique piece features two intersecting spherical Calcite crystal clusters. These clusters exhibit an “oily” luster with a striking yellow/orange color. No damage. Location: Wenshan, Yunnan Province, China Size: 12 x 9 x 7 cm

A very aesthetic piece that that is covered with light green Apophyllite crystals. Set among the Apophyllite crystals are numerous Stilbite crystals, several having a “bowtie” crystal formation. The pearly luster of this piece is outstanding. But wait - be sure to look at...

This is a massive cluster of countless intersecting, doubly-terminated prismatic Epidote crystals (ok, maybe not countless, but way more than I care to count . . . ). The crystals have striated faces, a deep green color and are in excellent condition. There is...

This piece hosts a complete spray of radiating, bronze-colored Astrophyllite crystals on a nicely contrasting bed of white Quartzite, along with a smaller spray on the side. The Astrophyllite crystals have an almost metallic luster. I have searched far and wide and have rarely...

This specimen features well-defined 2nd generation purple/grey Fluorite cubes over a previous crystalline mass of 1st generation green Fluorite. What makes this piece particularly attractive is that the 2nd generation of Fluorite has left a few windows into the 1st generation of Fluorite, creating...

This is an excellent specimen of Elestial Smoky Quartz. The Quartz is a light brown transitioning to darker brown near the terminations with great luster, and it is gemmy and transparent at the terminations. This piece will catch your eye! In excellent condition. Location: Minas...

A large piece covered with beautiful radiating sprays (flower-like clusters) of highly lustrous, transparent crystals of Hemimorphite, with great contrast and in excellent condition. This is a great show piece! Location: Mina La Ojuela, Mapimi, Durango, Mexico Size: 13.5 x 10.5 x 6.5 cm

Several Smoky Quartz crystals with Muscovite Mica on Feldspar. The Smoky crystals are lustrous, highly translucent to transparent at the tips and overall in great condition. Nice contrast and an attractive piece. Location: Galileia, Minas Gerais, Brazil Size: 11 x 8.5 x 4.5 cm  

A really nice display piece featuring two translucent (see backlit pic), mint-green octahedral Fluorite crystals set on a matrix of white microcrystalline quartz. The fluorite crystals have a textured surface due to microscopic stepped crystal growth. Great piece in excellent condition. Location: Hunan Province, China Size: 11.5 x...

This is a fascinating piece - it features swirls of Rhodochrosite seemingly wrapped around miniature globular aggregates of sphalerite, all on a matrix of quartz. Many of the Rhodo crystal aggregates have an almost rosette-like formation. I had a little trouble capturing the pink...