Somaliland Hessonite Garnet, Octagon, Single, 6.37 ct
This garnet material was extracted from the mines of Daarbuduq, Somaliland, and is found in a range of crystal sizes, colours and clarities. This type, hessonite, is the gem-quality variety of grossularite (grossular) garnet and is typically cinnamon-orange coloured which has earned it the nickname of the “cinnamon stone”.
External reference: Kinnaird, J. and Jackson J.A. (2000) Somaliland: a potential gem producer in the Mozambique Belt. J. Gemmology, 27, 139–154
|Length / width / depth|
10.10 mm / 10.50 mm / 7.41 mm
No treatment, 100% natural
Kinnaird, J. and Jackson J.A. Somaliland: a potential gem producer in the Mozambique Belt. J. Gemmology, 27, 139–154, 2000
1. Geology of the garnet mining areas comprise pegmatitic host rocks, which are related to late granite intrusions in the Mozambique orogenic belt;
2. Pegmatites occur in an east-west zone through the centre of Somaliland;
3. These pegmatites can intrude biotite and muscovite schists of the Mora Complex and often characterised with inner quartz core surrounded by coarse-grained quartz, K-feldspar;
4. The garnet discovery in Daarbuduq, 60 km north-east of Hargeisa, was the result of expensive surveying from the British Geological Survey in the 1950s;
5. Rough garnets yielded come in a large range of quality, clarity and colours from honey-yellow to orange-brown and brown-red; and
6. See our analysis section for more information.
GARNET DEPOSIT LOCATION
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