Marin Mineral
Tanzanian Gem Crystals
May 16, 2017  ·  11 specimens

T551 - Chrome Tourmaline  sold

Nadonjukin, Simanjiro, Tanzania
Miniature - 3.8 x 1.5 x 1.4 cm



(click on an image to enlarge)

Chrome Tourmaline Chrome Tourmaline Chrome Tourmaline Chrome Tourmaline

Terminated single gem crystal of Chrome Tourmaline which is a chromium and vanadium rich Dravite. Complete all around with deep emerald green coloration and gemmy!! This is one the best I've seen of this all green style from the 'Commander Mine' find in 2016. There is unfortunately part of the crystal missing from the lower back side as seen in the third photo. Regardless, it is a spectacular crystal that would command twice as much or more if perfect, the color and clarity is just that good, and it can be displayed without showing the missing area. Last photo is backlit. Weighs 17.2 grams.


T552 - Spessartine  sold

Nani, Loliondo, Tanzania
Miniature - 3.5 x 3 x 2.8 cm



(click on an image to enlarge)

Spessartine Spessartine Spessartine

Bright citrus orange single Spessartine crystal of good size and great color. A complete crystal but with two faces intergrown/contacted by the mica matrix. Internal gem zones, no black inclusions. Intermittent mining occurs now at this locality, and this crystal was found this year.


T553 - Tsavorite, Diopside on Graphite  sold

Merelani Hills, Arusha, Tanzania
Small Cabinet - 6 x 4 x 3.5 cm



(click on an image to enlarge)

Tsavorite, Diopside on Graphite Tsavorite, Diopside on Graphite Tsavorite, Diopside on Graphite Tsavorite, Diopside on Graphite Tsavorite, Diopside on Graphite

Crystallized Graphite with pale green Diopside and vivid green Tsavorite crystals. Large Graphite crystals and 5 Tsavorites, largest is 7mm and very gemmy with excellent color. Undamaged. An uncommon and showy Merelani combo specimen.


T556 - Dravite  sold

Mwajanga, near Komolo, Tanzania
Thumbnail - 2.8 x 2 x 1.3 cm



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Dravite Dravite Dravite

Blue capped Dravite crystal from a new, 2017 find. There is a deep blue cap, followed by a translucent white zone, over an opaque, dark base. The luster on these crystals is only fair, but the blue is intensly colored and unusual for Dravite. Undamaged, complete crystal, the best one in this size range I saw.


T557 - Zircon  sold

Mashewa, Tanga Region, Tanzania
Thumbnail - 2.7 x 1.3 x 1.3 cm



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Zircon Zircon Zircon

Well formed, complete red Zircon crystal. These have been trickling out for years, this one being a little larger than most, and better quality.


T558 - Pyrite on Graphite  sold

Merelani Hills, Arusha, Tanzania
Miniature - 3.3 x 1.3 x 1 cm



(click on an image to enlarge)

Pyrite on Graphite Pyrite on Graphite

Beautiful 1.1cm Pyrite crystal with superb luster with small Pyrite crystals on Graphite. Undamaged and better than photos.


T559 - Magnesio Axinite   $450  available

Merelani Hills, Arusha, Tanzania
Thumbnail - 2.3 x 1.8 x 0.3 cm



(click on an image to enlarge)

Magnesio Axinite Magnesio Axinite

Single, complete Magnesio Axinite crystal. These are only found spradically at Merelani, and even when found, are mostly just fragments of crystals. This is an uncommonly complete crystal, relatively undamaged with just a little chatter along one edge.

T560 - Spessartine  sold

Nani, Loliondo, Tanzania
Thumbnail - 3 x 3 x 3 cm



(click on an image to enlarge)

Spessartine Spessartine Spessartine

Bright citrus orange single Spessartine crystal of good size and color. A complete crystal with a souple small chipped tips, otherwise undamaged. Internal gem zones and very few black inclusions. Intermittent mining occurs now at this locality, and this crystal was found this year.


T562 - Diopside  sold

Merelani Hills, Arusha, Tanzania
Thumbnail - 2.5 x 1.0 x 0.6 cm



(click on an image to enlarge)

Diopside Diopside

Undamaged single Diopside with great transparency, facet grade it's entire length. The backside has some attached Graphite and crystals of Graphite extend into the back of the crystal.


T563 - Diopside   $400  available

Merelani Hills, Arusha, Tanzania
Thumbnail - 2.8 x 1.1 x 0.5 cm



(click on an image to enlarge)

Diopside Diopside Diopside

Single Diopside with the top chrome green coloration. A funny thing about Merelani Diopsides is that the highly transparent crystals have lighter color, and crystals like this one, with the top color, have less transparency. There are two indentations from other crystals on one narrow side, otherwise complete and undamaged all around.

T565 - Tanzanite, Tsavorite, Diopside on Graphite  sold

Merelani Hills, Arusha, Tanzania
Miniature - 3.5 x 2.5 x 1.3 cm



(click on an image to enlarge)

Tanzanite, Tsavorite, Diopside on Graphite Tanzanite, Tsavorite, Diopside on Graphite Tanzanite, Tsavorite, Diopside on Graphite Tanzanite, Tsavorite, Diopside on Graphite

Colorful combination specimen of Tanzanite, Tsavorite, and Diopside on Graphite crystals. There is unfortunatley some damage to two of the Tsavorite crystals, however the colorful combination of minerals creates a visual appeal that's undeniable.


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