colour-12 assorted colours
material- lead free k9 crystal.
GRADE A- best quality lead free crystal. machine cut. Sharp edges and best sparkle
GRADE 1- Mid quality lead free budget crystals- machine or hand cut
GRADE 2- budget grade hand cut k9 lead free crystal glass
AB = Aurora borealis, meaning northern lights. Ab crystals have a pearlu coating that changes colour in different light.