Amethyst Marquise CharmA marquise cut amethyst at 95mm with a white CZ round accent in a 207mm 925 sterling silver setting the Amethyst Marquise is the elongated stone variant for those who prefer the marquise cut's directional quality over the round's equal distribution. Deep purple amethyst in marquise takes on a different character than in oval or round cuts the point ends concentrate colour at the extremes. The single white CZ accent provides light contrast. At 0. 78g,