Tanzanian Gem Crystals — Marin Mineral

Tanzanian Gem Crystals
March 23, 2009 · 14 specimens

AF584 - Sphene sold

near Mahenge, Tanzania
Miniature - 3.5 x 2.5 x 0.9 cm

(click on an image to enlarge)

Bright, neon green Sphene crystal from a new find. There was very litttle of this material found, and most was only suited for gem rough, so although there is a contact on one edge and another edge is cleaved, it is in in the top percentile of what has been found. Very gemmy with good luster, 62 carats, 3.5 x 2.5 x 0.9 cm.

AF585 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Miniature - 4.4 x 1 x 0.6 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. Great luster, complete all around and undamaged with a small Graphite crystal at the base, size 4.4 x 1 x 0.6 cm.

AF586 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Miniature - 4.1 x 0.9 x 0.8 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. Great luster, complete all around and undamaged except for one small cleavage face along the lower 1.5 cm of one small face, size 4.1 x 0.9 x 0.8 cm.

AF598 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Miniature - 3.6 x 0.9 x 0.7 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal with multi-level termination. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. Great luster, complete all around and undamaged, size 3.6 x 0.9 x 0.7 cm.

AF587 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Miniature - 3.2 x 1.2 x 0.5 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. Great luster, complete all around with tabular shape and a small crystal attached near the termination, size 3.2 x 1.2 x 0.5 cm.

AF588 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 2.6 x 1.2 x 0.8 cm

(click on an image to enlarge)

AF589 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 3 x 1 x 0.8 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. This specimen is also pictured in the Sept.-Oct. 2009 issue of the Mineralogical Record (figure 59, page 376). Great luster, complete all around and undamaged with a small Graphite crystal at the base, size 3 x 1 x 0.8 cm.

AF590 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 3.1 x 1 x 0.7 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. Great luster and very gemmy with a small area of contacting on one side near the termination, size 3.1 x 1 x 0.7 cm.

AF591 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Miniature - 3.2 x 0.8 x 0.6 cm

(click on an image to enlarge)

AF593 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 1.5 x 0.8 x 0.5 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. This specimen is also pictured in the Sept.-Oct. 2009 issue of the Mineralogical Record (figure 59, page 376). Great luster, complete all around, size 1.5 x 0.8 x 0.5 cm.

AF594 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 1.6 x 0.7 x 0.5 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. This specimen is also pictured in the Sept.-Oct. 2009 issue of the Mineralogical Record (figure 59, page 376).Great luster, complete all around, very gemmy, size 1.6 x 0.7 x 0.5 cm.

AF595 - Diopside sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 1.7 x 0.8 x 0.6 cm

(click on an image to enlarge)

Terminated deep green Chromian rich Diopside crystal. This crystal came from a pocket opened in December 2007 that produced crystals of exceptional color, much better than typical Merelani Diopsides. For more information on this find, refer to page 77 of the January-February 2009 issue of the Mineralogical Record. This specimen is also pictured in the Sept.-Oct. 2009 issue of the Mineralogical Record (figure 59, page 376). Great luster, complete all around with indentation on one side where another crystal grew, very gemmy, size 1.7 x 0.8 x 0.6 cm.

AF596 - Apatite sold

800 foot level, Karo Mine (extension off Block D), Merelani Hills, Arusha, Tanzania
Thumbnail - 2.2 x 0.9 x 0.9 cm

(click on an image to enlarge)

Gem quality blue Apatite crystal with superb pyramidal termination. Pictured in the Sept.-Oct. 2009 issue of the Mineralogical Record (figure 45, page 371). size 2.2 x 0.9 x 0.9 cm.

AF261 - Diopside sold

Merelani Hills, Tanzania
Thumbnail - 1.5 x 1.1 x 1 cm

(click on an image to enlarge)

Rich chrome green Diopside crystal from the December 2007 find of Diopsides with a vivid, rich green color, far and away better than average Merelani Diopside. This is a stout single crystal complete all around with good luster. Besides this find, I understand there was only one other that produced this color, 1.5 x 1.1 x 1 cm.

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