Marin Mineral
Benitoite
August 7, 2020  ·  17 specimens

CT250 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Miniature - 5 x 3.5 x 1.5 cm



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Benitoite Benitoite Benitoite Benitoite Benitoite

Two blue Benitoite crystals on an island of white Natrolite. Largest Benitoite is 1.7cm. The crystals are deep blue and gemmy at the tips, and undamaged. Recently etched, never before offered for sale.


CT252 - Benitoite with Neptunite  sold

Gem Mine, San Benito Co., California, USA
Small Cabinet - 8 x 3.5 x 2.8 cm



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Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite

Blue Benitoite crystals and black Neptunite crystals on white Natrolite over schist. Largest Benitoite is 1.7cm and sits up nicely for display. There is another crystal on the left at 1.5cm and a couple more smaller Benitoite. Main crystal is medium blue and gemmy at the tips, and undamaged. Recently etched, never before offered for sale.


CT254 - Benitoite with Neptunite  sold

Gem Mine, San Benito Co., California, USA
Miniature - 5 x 4 x 2.7 cm



(click on an image to enlarge)

Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite

Large blue Benitoite crystals and black Neptunite crystals on white Natrolite over schist. Largest Benitoite is 2.3cm and there is another large, thicker crystal 2cm in size. Main crystal has cavernous growth in the center but is undamaged. Even though some of the Neptunites show contacting from growth into the opposing pocket wall, there are some really nice crystals present, including a neat cluster and a perfect, 2cm double-terminated crystal. Large Benitoite crystals!! Recently etched, never before offered for sale.


CT251 - Benitoite with Neptunite  sold

Gem Mine, San Benito Co., California, USA
Miniature - 4.1 x 2.2 x 1.8 cm



(click on an image to enlarge)

Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite

Blue Benitoite crystals and black Neptunite crystals on white Natrolite over schist. The two largest Benitoites are 1.5cm and sit up nicely for display. The crystals are deep blue with gem areas and undamaged. Recently etched, never before offered for sale.


CT253 - Benitoite with Neptunite  sold

Gem Mine, San Benito Co., California, USA
Small Cabinet - 7.8 x 5 x 2.8 cm



(click on an image to enlarge)

Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite

Numerous blue Benitoite crystals and black Neptunite crystals on white Natrolite over schist. Largest Benitoite is 1.2cm and the longest Neptunite is 2cm. Classic, densely crystallized specimen. Recently etched, never before offered for sale.


CT257 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Thumbnail - 2.8 x 1.8 x 1.2 cm



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Benitoite Benitoite Benitoite Benitoite

Killer thumbnail featuring a 9mm triply terminated blue Benitoite crystal perched atop white Natrolite and schist. All three terminations well exposed. Undamaged, deep blue with gem zones. Recently etched, never before offered for sale.


CT259 - Benitoite with Joaquinite, Neptunite  sold

Gem Mine, San Benito Co., California, USA
Miniature - 5 x 2.8 x 2.5 cm



(click on an image to enlarge)

Benitoite with Joaquinite, Neptunite Benitoite with Joaquinite, Neptunite Benitoite with Joaquinite, Neptunite Benitoite with Joaquinite, Neptunite

Numerous blue Benitoite crystals and Joaquinite crystals with a black Neptunite crystals on white Natrolite over schist. Largest Benitoite is 1.1cm and one Benitoite at the top is transparent with significant gem rough, in fact all the crystals have good transparency. Classic, densely crystallized specimen. Recently etched, never before offered for sale.


CT256 - Benitoite with Joaquinite, Neptunite  sold

Gem Mine, San Benito Co., California, USA
Small Cabinet - 6 x 3.3 x 2 cm



(click on an image to enlarge)

Benitoite with Joaquinite, Neptunite Benitoite with Joaquinite, Neptunite Benitoite with Joaquinite, Neptunite

Highly etched but glassy, tabular Benitoite crystals to 1cm with black Neptunite crystals, small brown Joaquinite crystals on white Natrolite over schist. Classic combination specimen for the locality. Comes with old Chuck Trantham and California Mineral Connection labels.


CT260 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Thumbnail - 2.5 x 1.5 x 1.2 cm



(click on an image to enlarge)

Benitoite Benitoite Benitoite

Cluster of 7 good sized, blue Benitoite crystals on white Natrolite. Largest Benitoite is 1.2cm. Some crystals are contacted along the edges where they grew against schist, but they have good color and are undamaged. Old specimen.


CT262 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Thumbnail - 2.8 x 2.5 x 2 cm



(click on an image to enlarge)

Benitoite Benitoite Benitoite

Six blue Benitoite crystals on white Natrolite and schist. Largest Benitoite is 1.3cm. Main crystal is very gemmy along the left half. Old Chuck Trantham specimen acquired by Chuck in 2007.


CT261 - Benitoite on Neptunite  sold

Gem Mine, San Benito Co., California, USA
Thumbnail - 1.3 x 0.5 x 0.4 cm



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Benitoite on Neptunite Benitoite on Neptunite Benitoite on Neptunite

Small but highly aesthetic specimen of a 5mm triply terminated blue Benitoite crystal on a Neptunite crystal. The Neptunite is only a partial crystal, but the Benitoite crystals are perfect and what matter here. Old specimen.


J477 - Benitoite with Natrolite on matrix  sold

Benitoite Gem Mine, San Benito County, California
Small Cabinet - 6.0 x 4.0 x 1.9 cm



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Benitoite with Natrolite on matrix Benitoite with Natrolite on matrix Benitoite with Natrolite on matrix

Over a dozen cornflower blue color Benitoite crystals are seen on a white Natrolite covered matrix. This is a classic, ultra-rare example of Benitoite with fully terminated crystals and no damage. A small black remnant crystal of Neptunite sits on one side. The Benitoite crystals are highly fluorescent under SW Ultraviolet light.


M659 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Miniature - 4.5 x 4.5 x 1.8 cm



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Benitoite Benitoite Benitoite

Deep blue Benitoite crystals to 1.8cm in size. Some have gem rough/transparent zones in their tips.


R795 - Neptunite, Aegerine   $50  at-auction

Gem Mine, San Benito Co., California, USA
Small Cabinet - 7 x 3.5 x 2.5 cm



(click on an image to enlarge)

Neptunite, Aegerine Neptunite, Aegerine Neptunite, Aegerine Neptunite, Aegerine

Classic California specimen of black Neptunite crystals on schist matrix. Lustrous black crystals of Neptunite are present associated with white Natrolite. While Benitoite is best known from this defunct locality, Neptunite also reached it's zenith here, the world's best of species. Embedded in the Natrolite are spherical, radial sprays of black Aegerine crystals. The Neptunite crystal reach 2cm in size. This specimen was recently etched from some of the last remaining mine rough and has never been offered for sale before. The mine is closed so get some now - once it's gone it's gone.

T161 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Small Cabinet - 7.5 x 5 x 2 cm



(click on an image to enlarge)

Benitoite Benitoite Benitoite

Gemmy bright blue Benitoite crystals to 1.3cm. Central crystal has good sized gem zone/facet rough. This one has the qualities you want in Benitoite - good color, luster, sharp edges, and transparency.


TR105 - Benitoite  sold

Gem Mine, San Benito Co., California, USA
Miniature - 4 x 3 x 2.5 cm



(click on an image to enlarge)

Benitoite Benitoite Benitoite

Two deep blue Benitoite crystals on white Natrolite over a schist matrix. Stunning example with a large 2.8cm crystal and a smaller 1cm crystal in front. Undamaged and hard to find specimen.


US112 - Benitoite with Neptunite  sold

Gem Mine, San Benito Co., California
Thumbnail - 3 x 2.5 x 2 cm



(click on an image to enlarge)

Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite Benitoite with Neptunite

Single Neptunite rising up between three Benitoites. The right Benitoite is very transparent. Undamaged. Very hard to find in this quality and aesthetic arrangement. .


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