Distinguish the high quality of glitter powder,the first step is :
Apperacnce: High quality glitter powder has neat scraped edge without obious jagged slashed marks,
and it is cellular hexagonal square in shape with the granular sizes having no difference.
Shape: We can check the shape from the microscope ,High quality glitter powder has a standard hexagon shape
and no other powder left.
Alkali resistance: High quality glitter powder after soaking in the strong acid and strong alkali liquid medium,
and the color still keep shinning and not fade.