The quality of some gemstones (e.g. corundum) that makes it possible for them to split only along certain definite planes (e.g. some twinning planes) of the crystal, contrary to cleavage which leadsto splitting anywhere parallel to the cleavage plane.
Parting
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Explanation on parting by Adin antique jewelry
Adin Academy
Parting
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The quality of some gemstones (e.g. corundum) that makes it possible for them to split only along certain definite planes (e.g. some twinning planes) of the crystal, contrary to cleavage which leadsto splitting anywhere parallel to the cleavage plane.
Also known as:
References
From: An Illustrated Dictionary of Jewelry, autor: Harold Newman, publishers: Thames and Hudson
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