Just an impromptu translation joke.
The pearls with the unbelievable luster are called ?Guai Se? 怪色 pearls.
"Guai 怪" means ?monster, demon? or ?unbelievable, strange, terrific or quite, very much? etc.
"Se 色" means ?luster, color? or ?colorful, erotic? etc.
My first thought is to call them erotic pearls, which are also alluring, but it is adequate to the academic research atmosphere here.
During taking photos, I get always different images with the same camera under the same light at the same position even without breathing. So I call them devil or devilish pearls just like some good football teams.