Bone Black Pigment, Bone Char, FreeShip.
$6.93
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Bone char is a porous, black, granular material produced by charring animal bones. Its composition varies depending on how it is made; it consists mainly of tricalcium phosphate 57–80%, calcium carbonate 6–10% and activated carbon 7–10%.....Ivory black was formerly made by grinding charred ivory in oil. Ivory black is considered a synonym for bone black. Ivory is no longer used because of the expense and because the animals who are sources of ivory are subject to international control as endangered species. Bone black and ivory black are artists' pigments which are in use since historic times by painters such as Rembrandt and Velázquez....(see more)
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