We have an octagon tourmaline, about 8 cts., step cut. This stone
is dark blue with some green showing. The stone is the typical cut
along the crystal side with very steep pavilion angles on the ends.
This stone is also the kind with little or no light along the axis
of the crystal, meaning a look down the ends shows only darkness.
If the stone is recut to improve lightness and color, what is the
approach? Would bringing in the long side pavilion facets to a
shallower angle help? Would the correct approach be to bring in the
steep facets on the ends of the stone?
The stone is nice but simply too dark and not cut to proper angles
for tourmaline in the first place. With the dead axis along center
end to end, I am not sure what sort of recutting would improve the
lightness and color of the gem.
Any advice is greatly appreciated.