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Home > Cut > Symmetry Features > Tilted table

Tilted table / eccentric table

The table in a symmetrically cut stone is parallel to the girdle plane; the crown height is therefore equal in all directions. A tilted table (Fig 268) is discerned during measurement of the proportions, when different values for the crown height are obtained. The tilting of the table may, for example, have originated through the cutting away of an inclusion close under the surface of the table (Fig 269).

An eccentric table affects the symmetry; if the amount of displacement exceeds 2 %, then it imparts irregular sizes to the adjoining crown facets and the brilliance is diminished (Fig 270and 270 a).

Fig 268 Table tilted towards girdle plane Fig 269 Tilted table caused by re-cutting or removing inclusion
Fig 268 Table tilted towards girdle plane Fig 269 Tilted table caused by re-cutting or removing inclusion
Fig 270 a Eccentric table Fig 270 Eccentric table
Fig 270 a Eccentric table Fig 270 Eccentric table
Fig 271 a Eccentric culet Fig 271 Eccentric culet
Fig 271 a Eccentric culet Fig 271 Eccentric culet
Deviation from circular shape Eccentric culet