African Minerals


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R561 - Prehnite $ 950
Merelani Hills, Arusha, Tanzania
small cabinet - 6.5 x 3.5 x 3.5 cm


(click on an image to enlarge)

Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r561a.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r561b.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r561c.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r561d.jpg] Prehnite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r561e.jpg]

Rosette-like formation of Prehnite crystals atop a 'matrix' of crystallized Prehnite. The rosette is 3.5cm tall and composed of large sized crystals with great yellow color and translucency. The lower portion of Prehnite has some of the greenest coloration I've yet seen in Tanzanian Prehnite. This is an incredible Prehnite that I've held in my collection for many years. Ex. Mike Keim.


R562 - Chabazite on Prehnite on Tanzanite $ 450
Merelani Hills, Arusha, Tanzania
thumbnail - 3 x 2 x 2 cm


(click on an image to enlarge)

Chabazite on Prehnite on Tanzanite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r562a.jpg] Chabazite on Prehnite on Tanzanite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r562b.jpg] Chabazite on Prehnite on Tanzanite from Merelani Hills, Arusha, Tanzania [db_pics/pics/r562c.jpg]

Fine quality, highly translucent formations of yellow Prehnite crystals on blue Tanzanite. Golden brown Chabazite crystals are sprinkled atop the Prehnite. This is an incredible Prehnite that I've held in my collection for many years. Ex. Mike Keim.


R563 - Diopside $ 95
Merelani Hills, Arusha, Tanzania
thumbnail - 1.6 x 0.9 x 0.6 cm


(click on an image to enlarge)

Diopside from Merelani Hills, Arusha, Tanzania [db_pics/pics/r563a.jpg] Diopside from Merelani Hills, Arusha, Tanzania [db_pics/pics/r563b.jpg]

Glassy single Diopside crystal with excellent color and top glass-like luster. Complete and undamaged.


R564 - Smithsonite $ 3500
Berg Aukus Mine, Grootfontein, Namibia
miniature - 3.5 x 3 x 2.8 cm


(click on an image to enlarge)

Smithsonite from Berg Aukus Mine, Grootfontein, Namibia [db_pics/pics/r564a.jpg] Smithsonite from Berg Aukus Mine, Grootfontein, Namibia [db_pics/pics/r564b.jpg] Smithsonite from Berg Aukus Mine, Grootfontein, Namibia [db_pics/pics/r564c.jpg] Smithsonite from Berg Aukus Mine, Grootfontein, Namibia [db_pics/pics/r564d.jpg]

Cluster of large green Smithsonite crystals from the Berg Aukus Mine. Main crystal is 2.8cm and translucent to transparent. Ex. Mike Keim.


R565 - Smithsonite $ 125
Tsumeb, Namibia
miniature - 3.8 x 3 x 2.1 cm


(click on an image to enlarge)

Smithsonite from Tsumeb, Namibia [db_pics/pics/r565a.jpg] Smithsonite from Tsumeb, Namibia [db_pics/pics/r565b.jpg] Smithsonite from Tsumeb, Namibia [db_pics/pics/r565c.jpg]

Tall knob of dark black, iridescent sulfide coated on all sides by Smithsonite crystals. Undamaged.


R567 - Dravite $ 3500 SOLD
Mwajanga, near Komolo, Tanzania
thumbnail - 2.8 x 1.6 x 1.4 cm


(click on an image to enlarge)

Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r567a.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r567b.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r567c.jpg]

Single gem Dravite crystal from the initial finds at Mwajanga around 2014. Fully transparent and gem quality, complete and undamaged. This is the finest Mwajanga Dravite I was able to acquire. Weighs 10.1 grams. Ex. Mike Keim.


R568 - Dravite $ 1200
Mwajanga, near Komolo, Tanzania
thumbnail - 2.5 x 0.9 x 0.8 cm


(click on an image to enlarge)

Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r568a.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r568b.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r568c.jpg]

Single gem Dravite crystal from the initial finds at Mwajanga around 2014. Gem quality on the lower half with a sharp transition to white, chatoyant 'cat's-eye' in the upper half. Complete and undamaged. I bought alot of this material early and this was my keeper of this style. Weighs 3.9 grams. Ex. Mike Keim.


R569 - Dravite $ 1500
Mwajanga, near Komolo, Tanzania
miniature - 3.5 x 1 x 0.8 cm


(click on an image to enlarge)

Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r569a.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r569b.jpg]

Single gem Dravite crystal from the initial finds at Mwajanga around 2014. Gem quality greenish grey on the lower half with a sharp transition to white, chatoyant 'cat's-eye' in the upper half. Complete and undamaged. I bought alot of this material early and this was my keeper of this style. Weighs 6.4 grams. Ex. Mike Keim.


R570 - Dravite $ 500 SOLD
Mwajanga, near Komolo, Tanzania
thumbnail - 2.0 x 1.5 x 1.5 cm


(click on an image to enlarge)

Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r570a.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r570b.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r570c.jpg] Dravite from Mwajanga, near Komolo, Tanzania [db_pics/pics/r570d.jpg]

Single gem Dravite crystal from the initial finds at Mwajanga around 2014. Gem quality and rootbeer-brown in color. Complete all around and nearly pristine with a wonderful multi-faceted termination. Weighs 5.75 grams. Ex. Mike Keim.


R571 - Titanite $ 75 SOLD
Tete Prov., Mozambique
thumbnail - 2.2 x 1.2 x 0.3 cm


(click on an image to enlarge)

Titanite from Tete Prov., Mozambique [db_pics/pics/r571a.jpg] Titanite from Tete Prov., Mozambique [db_pics/pics/r571b.jpg]

Complete single green Titanite crystal from Mozambique. Partially included but highly gemmy in other areas. Well crystallized on all sides and undamaged.


R574 - Ruby in Zoisite $ 2400 SOLD
Longido, Tanzania
large cabinet - 18 x 12.5 x 9 cm


(click on an image to enlarge)

Ruby in Zoisite from Longido, Tanzania [db_pics/pics/r574a.jpg] Ruby in Zoisite from Longido, Tanzania [db_pics/pics/r574b.jpg]

Deep red, hexagonal Ruby crystal surrounded by green Zoisite. This specimen is exceptional for the sharp hexagonal form of the Ruby crystal and the impressive size of the Ruby at 13cm! On most of these, either because of the way the rock breaks or the shape of the Ruby crystals themselves, the rubies are more amorphous-looking without the hexagonal shape. The Zoisite has a bright lime green coloration with additional smaller rubies present. This is a big heavy piece that could be sliced up into multiple slabs on polished, but I like the natural look of this one. Ex. John Dabney collection.


R575 - Ruby in Zoisite $ 950 SOLD
Longido, Tanzania
cabinet - 12.5 x 11.5 x 10 cm


(click on an image to enlarge)

Ruby in Zoisite from Longido, Tanzania [db_pics/pics/r575a.jpg] Ruby in Zoisite from Longido, Tanzania [db_pics/pics/r575b.jpg] Ruby in Zoisite from Longido, Tanzania [db_pics/pics/r575c.jpg]

Deep red, hexagonal Ruby crystal surrounded by green Zoisite. This specimen is exceptional for the sharp hexagonal form of the Ruby crystal, which is 6.5cm in diameter. On most of these, either because of the way the rock breaks or the shape of the Ruby crystals themselves, the rubies are more amorphous-looking without the hexagonal shape. The Zoisite has a bright lime green coloration with an additional large Ruby present on the back side. This is a big heavy piece that could be sliced up into multiple slabs on polished, but I like the natural look of this one. Ex. John Dabney collection.

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