12.6mm fine, bright Rose-de-France amethyst, precision
custom "concave" cut in a octagonal shape by our Chinese cutting house. Weighing 6.12 carats, and
set in a heavy 14K yellow gold 4-prong factory-made "basket" style mounting, it
is a rarity which may never come our way again. Very fine stone
cutting--most stones are cut in 4, 6, or 8-fold symmetry because it is easy to
divide a circle into that many degrees (90, 60, 45 respectively) for each
symmetry section. Concave cutting involves cutting into the bottom (pavilion) side of the stone (as opposed to flat facets),
which gives superior brilliance to the stone, but is more expensive to accomplish.
An excellent buy!