Gemstone Safari
to the Umba River sapphire mines in september 2007


The whole team.

Mr. Nakara S. Matemu with Hubert Heldner

Having a drink halve way to the mine in Tanga.

At the mine, first thing we did is, sink a shaft. Here we are done for the day.

This is how it is done. Dig a hole to reach

the sapphire gravel and pass it trough a sieve.

Then shift troug the pile. Janusz is having all the fun.

The clay does not stick to the sapphire. this makes it easy.

An excited look at a small stone.

We are working in teams of four.

At the end of the day look

at the happy faces.

The camp at high noon.

The last evening a goat has been offered by the mine owner

and we shared it with all the miners, during a grill party.

Back in Dar-es-Salaam, Rocco at the faceting machine, cutting his first saphire.

Mme Noreen one of the lapidary instructors is preparing the ceramic lap with diamond compound.

The beach late at night after a traditional dinner with fisch from the days catch.
Sapphire
Sapphires found by Rocco. This is about the quantity each member of the groupe found.
 

These are the stones I found digging.
Sapphire
Sapphires T076 found by Hubert
smallest 0.59 gr
biggest 4.77 gr
Total weight of parcel 32.51 gr
Garnet
Garnet T084
smallest 0.19 gr
biggest 2.3 gr
Total weight of parcel 18.55 gr
Spinel
Spinel T077
1.81 gr
Zirkon
Zirkon T085
2.03 gr
Tourmaline
Tourmaline T081a
3.94 gr
Tourmaline
Tourmaline T081b
black 3.54 gr
blue-green 0.80 gr
yellow 0.66 gr
pink 0.72 gr
 

These are the stones I bought at the mine.
Sapphire
Sapphire T074
red 0.59 gr
green 1.65 gr
violet 2.65 gr
Sapphire
Sapphire T075a
3.68 gr
Sapphire
Sapphire T075b
2.08 gr
Garnet
Garnet T073
small 1.20 gr
big 9.38 gr
Garnet
Garnet T082
smallest 2.00 gr
biggest 8.97 gr
Total weight of parcel 71.71 gr
Garnet
Garnet T083
smallest 0.45 gr
biggest 1.89 gr
Total weight of parcel 174.78 gr
Garnet
Garnet T083
Garnet
Garnet T083
Sunstone
Sunstone T078
smallest 1.9 gr
biggest 9.77 gr
Total weight of parcel 36.87 gr
Moonstone
Moonstone T079
smallest 5.49 gr
biggest 9.01 gr
Total weight of parcel 20.24 gr



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Copyright on all photos by Hubert Heldner