Why is glass often considered class evidence?

Question

Quizplus · Accepted Answer

Glass is often considered class evidence because it can usually only be matched to a type of glass, rather than to a specific piece of glass. While there are categories of glass, these categories can still be narrowed down to a specific type based on certain characteristics. Additionally, there are tests available to identify glass, such as refractive index and density measurements. Glass fragments may be small, but they can still provide valuable information in an investigation.

Why Is Glass Often Considered Class Evidence