Marin Mineral
Mixed Minerals
October 1, 2019  ·  12 specimens

K513 - Spinel  sold

Koksha Valley, Badakhshan, Afghanistan
Miniature - 4.2 x 4.2 x 3.8 cm



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Spinel Spinel Spinel

Gem quality purple Spinel on matrix. A rarely seen and colorful gem crystal on matrix. The main crystal is 11x10x7mm in size and transparent. The backside is flat and the crystal sticks out off the matrix, but is undamaged. It was etched out of Calcite and the gap behind it is where the Calcite was formerly located. Aside from it's natural beauty, there is intrinsic gem value in the main crystal.


K512 - Chlorite in Quartz  sold

Tamil Nadu, India
Cabinet - 14 x 11.5 x 6 cm



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Chlorite in Quartz Chlorite in Quartz Chlorite in Quartz

Stunningly beautiful cluster of light green Quartz crystals from India, the green color caused by inclusions of Chlorite. The crystals stick out in various directions with striking effect. Undamaged and comes with a custom Lucite stand.


K511 - Tourmaline on Quartz  sold

Pederniera Mine, São José da Safira, Minas Gerais, Brazil
Cabinet - 15 x 10 x 7 cm



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Tourmaline on Quartz Tourmaline on Quartz Tourmaline on Quartz Tourmaline on Quartz Tourmaline on Quartz Tourmaline on Quartz

Large, floater specimen of multi-colored Tourmaline crystals on a large Quartz crystal. This is an old specimen dating back to the early days of the mine (I am told the 1980s). Even though they are all from the same pocket, the Tourmalines show a variety of colors and form - some with dark terminations, others with yellowish terminations, and some with pink cores. The best is a 4cm well terminated crystal of transparent green with a yellow termination. The Quartz crystal is rehealed on the bottom. This is a great (and inexpensive) specimen for a collector who wants to put together a Pederniera collection reflecting the various pockets and styles found at the mine.


K508 - Garnet, Dravite in Graphite  sold

Red Embers Mine, Erving, Massachusetts, USA
Cabinet - 12.5 x 9 x 2 cm



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Garnet, Dravite in Graphite Garnet, Dravite in Graphite Garnet, Dravite in Graphite Garnet, Dravite in Graphite

Seven red Garnet crystals in a matrix of grey Graphite. Small dark crystals of Dravite are also embedded in the Graphite. The Garnets reach 12mm in diameter and have been analyzed as mostly Almandine with a touch of Pyrope in the outer layers. These make stunning specimens due to the fact that the Graphite has been removed from around the backs of the Garnets allowing light to pass through the crystals, creating glowing 'red embers'.


K509 - Garnet, Dravite in Graphite  sold

Red Embers Mine, Erving, Massachusetts, USA
Cabinet - 14 x 11 x 1.5 cm



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Garnet, Dravite in Graphite Garnet, Dravite in Graphite Garnet, Dravite in Graphite Garnet, Dravite in Graphite

13 red Garnet crystals in a matrix of grey Graphite. Small dark crystals of Dravite are also embedded in the Graphite. The Garnets reach 10mm in diameter and have been analyzed as mostly Almandine with a touch of Pyrope in the outer layers. These make stunning specimens due to the fact that the Graphite has been removed from around the backs of the Garnets allowing light to pass through the crystals, creating glowing 'red embers'.


K504 - Garnet, Dravite in Graphite  sold

Red Embers Mine, Erving, Massachusetts, USA
Small Cabinet - 6.5 x 5.5 x 1.5 cm



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Garnet, Dravite in Graphite Garnet, Dravite in Graphite Garnet, Dravite in Graphite

5 red Garnet crystals in a matrix of grey Graphite. Small dark crystals of Dravite are also embedded in the Graphite. The Garnets reach 10mm in diameter and have been analyzed as mostly Almandine with a touch of Pyrope in the outer layers. These make stunning specimens due to the fact that the Graphite has been removed from around the backs of the Garnets allowing light to pass through the crystals, creating glowing 'red embers'.


K459 - Prehnite  sold

Merelani Hills, Arusha, Tanzania
Small Cabinet - 5.5 x 4.5 x 2.3 cm



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Prehnite Prehnite Prehnite

Spherical groups of translucent yellow Prehnite crystals on Graphite. Great color with large distinct crystals.


K462 - Prehnite  sold

Merelani Hills, Arusha, Tanzania
Small Cabinet - 6 x 5 x 3.3 cm



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Prehnite Prehnite Prehnite

Grouping of translucent yellow Prehnite crystals with a slight amount of attached Graphite. Great color with large distinct crystals. There is also an attached crystal of whitish Chabazite. Slight chipping is present but overall in great condition and a very good one for Merelani Prehnite.


K492 - Insects in Copal  sold

Nosy Varika, Vatovavy-Fitovinany Region, Madagascar
Cabinet - 11 x 2 x 0.7 cm



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Insects in Copal Insects in Copal Insects in Copal

Fossilized tree sap containing inclusions of well preserved insects. There are many small insects and a 1.4cm insect that looks like a cockroach. Copal is similar to amber, but younger in age. This copal is from the tree species Hymenaea verrucosa and believed to be from the Quaternary Period. Polished on all sides.


K351 - Tsavorite  sold

Merelani Hills, Arusha, Tanzania
Thumbnail - 1.7 x 1.4 x 1 cm



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Tsavorite Tsavorite Tsavorite Tsavorite

Elongated single Tsavorite crystals with good color. Glassy luster and translucent grading to transparent along the top edge. It's contacted or
incomplete on one end, but has an uncommon form and is good sized.


K362 - Brucite   $300  available

Killa Saifullah, Balochistan, Pakistan
Small Cabinet - 5.9 x 4.9 x 2 cm



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Brucite Brucite Brucite

Bright lemon yellow Brucite crystals from the original finds of a couple years ago. I looked through hundreds of specimens to find the brightest, most deeply saturated yellow specimens such as this. This specimen is solid Brucite and is well crystallized on both sides. The bright yellow Brucite formed as a second generation over a thin piece of white Brucite. These new specimens from Pakistan are world's best for the species.

K412 - Heliodor gemstone  sold

Volodarsk-Volynskii, Ukraine
Thumbnail - 1.5 x 1 x 0.7 cm



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Heliodor gemstone Heliodor gemstone

Faceted gemstone of Heliodor, a 1.5cm oval weighing 8 carats. This was likely cut in the Ukraine and came to me in a lot of Heliodor crystals. There are a couple chips and should be recut if used in jewelry, but would be great paired with a Heliodor crystal in a rough and cut set.


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