10, Natrolite Crystals 1.6 - 2.9 cm ea. KCAC Mine, near the Benitoite Gem Mine San Benito County, California   Out of an old collection, come these crystals of well crystallized Natrolite. These were collected over 35 years ago, from right next door to the Benitoite Mine, The Union Carbide Pit / KCAC Mine. This group of 10 crystals, are all well formed and t… More info

Benitoite on Matrix (Fluorescent Specimen) Benitoite Gem Mine San Benito County, California 8.4 cm x 4.2 cm x 4.2 cm   If you are looking for a highly fluorescent Benitoite specimen that won't break the bank, here it is. This would be great in a Shortwave UV display. This specimen was extracted from a vug in a large boulder of greenish blue schist. T… More info

Benitoite Rough & Cut Set Benitoite Gem Mine San Benito County, California   Here is a great rough and cut set of one of the worlds rarest gemstones, Benitoite. For those of you that are not familiar with Benitoite, this gem is a true All American Gemstone! All other species of minerals that gems are cut from, c… More info

Neptunite with Natrolite Benitoite Gem Mine San Benito County, California 4.68 cm x 3.32 cm x 2.3 cm   Here is an very fine miniature size specimen of Neptunite crystals on Natrolite. This is a wonderfully aesthetic specimen of this mineral. This specimen comes from The Benitoite Gem Mine,  which was originally called the Dallas Mine and now called the Cali… More info

Benitoite Rough & Cut Set Benitoite Gem Mine San Benito County, California   Here is a great rough and cut set of one of the worlds rarest gemstones, Benitoite. For those of you that are not familiar with Benitoite, this gem is a true All American Gemstone! All other species of minerals that gems are cut from, can be found in dif… More info

Benitoite in Matrix Benitoite Gem Mine San Benito County, California 4.1 cm x 2.0 cm x 1.0 cm     Here is a interesting miniature specimen of Benitoite in matrix. This comes from a vein within a piece of matrix, that had no snowy white natrolite. Instead the matrix was a mix of natrolite and crossite, allowing the matrix to be etched… More info

Benitoite Rough & Cut Set, with Neptunite Benitoite Gem Mine San Benito County, California   Here is a great rough and cut set of one of the worlds rarest gemstones, Benitoite. For those of you that are not familiar with Benitoite, this gem is a true All American Gemstone! All other species of minerals that gems are cut from, can… More info

Benitoite Rough & Cut Set, with Neptunite Benitoite Gem Mine San Benito County, California   Here is a great rough and cut set of one of the worlds rarest gemstones, Benitoite. For those of you that are not familiar with Benitoite, this gem is a true All American Gemstone! All other species of minerals that gems are cut from, can be found in diff… More info

Benitoite Rough & Cut Set Benitoite Gem Mine San Benito County, California   Here is a great rough and cut set of one of the worlds rarest gemstones, Benitoite. For those of you that are not familiar with Benitoite, this gem is a true All American Gemstone! All other species of minerals that gems are cut from, can be found in dif… More info

Benitoite with Neptunite Benitoite Gem Mine San Benito County, California 3.7 cm x 3.0 cm x 1.9 cm   Here is a smaller but beautiful specimen of benitoite and neptunite crystals. This specimen comes from the only place in the world, these 2 rare minerals can be found together. The small benitoite crystals have that beautiful blue coloring. They formed next t… More info

Benitoite Rough & Cut Set Benitoite Gem Mine San Benito County, California   Here is a great rough and cut set of one of the worlds rarest gemstones, Benitoite. For those of you that are not familiar with Benitoite, this gem is a true All American Gemstone! All other species of minerals that gems are cut from, can be found in different places around the world. … More info

Neptunite with Natrolite Benitoite Gem Mine San Benito County, California 5.3 cm x 4.6 cm x 3.1 cm   Here is a great specimen of Neptunite crystals on Natrolite. This specimen comes from The Benitoite Gem Mine,  which was originally called the Dallas Mine and now called the California State Gem Mine, in San Benito County, California. Although it is said… More info

Benitoite Benitoite Gem Mine San Benito County, California 2.27 cm x 2.0 cm x 1.0 cm     Here is a great thumbnail specimen of Benitoite on matrix. There is one, 1.0 cm size benitoite crystal, partially exposed on matrix with some snowy white natrolite. The crystal is sharp, well formed and has great clarity. So clean you can see the… More info

Tabular Benitoite Crystals on Matrix Benitoite Gem Mine San Benito County, California 4.0 cm x 3.1 cm x 2.3 cm   Here is a very nice specimen from this famous mine. This miniature size specimen of greenish blue schist with some snowy white natrolite, hosts a 1 cm, high luster tabular benitoite crystals. It is flat laying on the matrix and is quite transparen… More info

Benitoite & Neptunite San Benito County, California 3.0 cm x 2.0 cm x 1.60 cm   Here is a small but amazing specimen of Benitoite and Neptunite It has a single well formed and gemmy Benitoite crystal, that formed over neptunite crystals. There is a tiny neptunite seen coming out on the back side of the benitoite. Single larger neptunite has good red flas… More info

Natrolite Crystals, Union Carbide Pit (near Benitoite Mine) San Benito County, California 4.0 cm x 2.34 cm x 2.1 cm ex. Jack Nieburger coll. ex. Kristalle   Here is a beautiful cluster of crystals of the Zeolite Group species, Natrolite. An excellent and uncommon, fairly large crystal for the locale. Seldom on the market in this quality. Natrolite from t… More info

Benitoite on Natrolite Benitoite Gem Mine  San Benito County, California 6.4 cm x 4.8 cm x 3.5 cm   Here is a very nice and interesting small cabinet size specimen of benitoite in natrolite, on a greenish / blue schist matrix. There is a single large benitoite crystal on this specimen. The crystal is tabular in nature. The light blue to white crystals measu… More info

Benitoite with Neptunite, Druzy Crystals Benitoite Gem Mine San Benito County, California 4.3 cm x 4.0 cm x 2.2 cm     Here is a beautiful specimen of benitoite with neptunite crystals. Except for one, most of the benitoite crystals are druzy, which is not that common. The single large crystal is missing it's tip but is still wel… More info

Lot of 8, Benitoite Crystals, 20.46 ctw. Benitoite Gem Mine  San Benito County, California   Here is a lot of 8, nicely formed benitoite crystals.  These crystals are very nice, they do not show as well to the camera lens, much better in person. Some are fully formed and a few are partially formed.  Each is a great specimen crystal in it's own… More info

Benitoite Crystal Specimen, 9.98 carats   Here is one very nice large benitoite crystal.  If you know benitoite, then you know larger crystal specimens are rare to come by, since most larger crystals are usually saved for faceting or cabbing. This crystal weighs 9.98 carats and measures approx. 14.9 mm x 11.2 mm x 7.6 mm. The blue in the photos is a bit more blue… More info

Benitoite Benitoite Gem Mine San Benito County, California 4.0 cm x 3.0 cm x 2.0 cm   Here is a great miniature size specimen of Benitoite crystals on matrix. There are 10 benitoite crystals on matrix with snowy white natrolite. Some of the crystals growth were interrupted by matrix, mainly around the edge. A very nic… More info

Benitoite on Matrix, (Unusual Termination) Benitoite Gem Mine San Benito County, California 4.1 cm x 3.9 cm x 1.8 cm   Here is really nice specimen of Benitoite, with some unusual features to it! A must for the odd crystal collectors.   The large center crystals, 1.4 cm, is completely terminated, although heavily modifie… More info

Benitoite Crystal Cluster, 15 cts. Benitoite Gem Mine San Benito County, California 2.2 cm x 1.8 cm x 1.2 cm   Here is a small but beautiful cluster of inter-grown Benitoite crystals. They have that beautiful blue coloring with gemmy tips. The crystals are well formed The faces have mostly matte surfaces, which 99% of all benitoite crystals have. Edge crysta… More info

Benitoite on Matrix Benitoite Gem Mine San Benito County, California 3.56 cm x 2.35 cm x 2.0 cm   Here is a very nice miniature size specimen of Benitoite from this famous mine.   Beautiful blue crystals of benitoite, sit within a greenish blue schist matrix along with snowy white natrolite. The crystals are mostly well formed, but have had their growth… More info

Benitoite Crystals on Matrix Benitoite Gem Mine San Benito County, California 3.6 cm x 3.5 cm x 1.80 cm   Here is a really specimen of Benitoite crystals. These crystals all have very high luster faces, which are the most desirable. They have that beautiful deep blue coloring and are quite gemmy. There are many well formed and terminated crystals. Only t… More info

Tabular Benitoite with Joaquinite. Benitoite Gem Mine San Benito County, California 7.42 cm x 7.0 cm x 4.4 cm   Here is a really unique and uncommon specimen of benitoite from this famous mine. This specimen consists of hundreds of tabular benitoite crystals, from micros up to 1 cm. These beautiful tabular crystals have colorless centers with blue edges. Mos… More info

Benitoite with Neptunite and Joaquinite. Benitoite Gem Mine San Benito County, California 8.80 cm x 5.80 cm x 3.0 cm   Here is a really nice specimen from this famous mine. The only place in the world that these 3 rare minerals can be found together. Here is a beautiful plate of crystals on a bluish green schist matrix with snowy white natrolit… More info

Benitoite Melee Cutting Rough 33 pieces, 21.98 ctw   Here is something you never see me part with, benitoite facet rough.   This is a melee cutting parcel of Benitoite. Most piece will only cut 1.5 to 2.0 mm size stones, but there might be a few 3.0 mm in the lot. Even if your cutting yield is ridiculously low at 10%, you would still have just over 2 carats… More info

Large Benitoite Crystals with Natrolite on Matrix Benitoite Gem Mine San Benito County, California 6.0 cm x 5.1 cm x 2.3 cm   Here is a great specimen of large Benitoite crystals on matrix. This specimen hosts over a dozen crystals, that are bi-colored and very larger for the species. There is also a single gemmy but micro crystal of orange Joaquinite crystal … More info

Benitoite w/ Natrolite on Matrix Benitoite Gem Mine San Benito County, CA 6.0 cm x 3.25 cm x 2.0 cm   Here is a wonderful specimen of Benitoite. It has well formed crystals up to 1.8 cm. Many of the crystals are not fulling exposed from the natrolite, giving the specimen a great color contrast. Some of the crystals around the edge are damaged, but t… More info

Benitoite with Natrolite on Matrix Benitoite Gem Mine San Benito County, California 4.5 cm x 2.7 cm x 1.6 cm     Here is a top quality miniature size specimen from this famous mine. The specimen consists of a few dozens benitoite crystals in differing sizes, from micros up to 9 mm. These crystals all sit on a bluish green schist matrix covered in snowy … More info

Large Benitoite Crystal Cluster Benitoite Gem Mine San Benito County, California 4.1 cm x 3.0 cm x 2.0 cm   Here is a very special specimen of Benitoite crystals.   This is a cluster of partially crossite included Benitoite crystals. What makes this one of special, is the size of the main crystal. It is believed that the inclusions of crossite, allo… More info