Cut stone and its production method
AssigneeHarry Winston SA
InventorsErika OGUEY, Tobias JENNI
Life of this patent
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Abstract
A cut stone and its production method, in particular a cut precious or semi-precious stone including a crown topped by a table, a pavilion and a girdle at the intersection of the crown and of the pavilion, of which the surface of facet P2 has a cutting angle comprised between 35° and 45°, of which the surface of facet P4 has a cutting angle comprised between 25° and 35° and of which the ratio between the total height (H) and the diameter or length (L) of said cut precious or semi-precious stone is less than 0.50, preferably comprised between 0.50 and 0.40 and, more specifically, approximately 0.43.
Claims14
A cut precious or semi-precious stone comprising a crown topped by a table, a pavilion and a girdle at the intersection of the crown and of the pavilion, characterised in that the surface of facet P2 has a cutting angle comprised between 35° and 45°, in that the surface of facet P4 has a cutting angle comprised between 25° and 35° and in that the ratio between the total height (H) and the diameter or length (L) of said cut precious or semi-precious stone is less than 0.5.
Dependencies are inferred from the claim text.