Amethyst ni sisitemu ya sisitemu eshatu, kristu ni inkingi ya mpande esheshatu, ubuso bwa silindrike burahinduka, hariho imiterere yibumoso nuburyo bwiburyo, impanga-kirisiti irasanzwe cyane.Ubukomere ni 7. Kirisiti ikunze kubamo gazi-idasanzwe idasanzwe.