A Kilogram of Cow Gallstone in Europe and China is approximately N200Million but in Northern Nigeria we wash and throw it away daily in our abattoirs,Laments Abdullahi Sani

What we are discussing here, are ox gallstones. Gallstones are mineral deposits (and not of organic matter) mainly found in bovines gallbladders.


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We make a distinction between different kinds of Ox gallstones, depending on their size, shape and colour, each of these holds a significant commercial value.

Size / Weight / Shape / Colour

Calculs biliaires de bovins

1st Grade – Completely orange > 2,5 cm3

Gallstones look like stones of various shapes and colours.

Two main shapes : egg-shaped or pyramid-shaped.
Two distinct colours : Orange brown, or dark brown close to brownish black.

Some gallstones can be as big as a hens-egg (whose weight can reach 100 grs), but the average gallstone will be more likely the size of a pigeon’s egg, weighing around 10 grams.


Gallstones develop inside a number of bovines, mainly depending on their age and diet.

They are essentially located in the gallbladder.

The bovine race is quite diverse. It includes, depending on the countries: cows, oxen bulls, buffalos, zebus, bison’s, yaks, gaurs…

Gallstones have a significant commercial value that can reach up to 160 000 USD* per kilogram. Their value depends on their size, their quality, the conditions of their preservation and their texture.

For an organization with bovine-related activities, collecting gallstones can be a very profitable source of additional revenue, especially seeing that it doesn’t require any additional expenses nor investments.

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