Pin Grading System

Pin grading is an essential process to ensure the product’s quality. Every pin maker has his own grading system and his tolerance threshold, but it usually starts with a visual appreciation of the pin. I look for any potential defect, scratch, missing color area, spot, … Pins are categorized in three groups, the list below clarify the meaning of each grades. Please keep in mind that enamel pins are handmade item, they cannot be 100% perfect.


A grade pins (standard)

It’s the highest quality, some may have minor defects only visible during a thorough examination, but they still look gorgeous.

Some example of A grade defects:

  • Slight color/glitter overflow
  • Unnoticeable rubbles
  • Minor imperfections

B grade pins (second)

They are close to A grade, nevertheless they got noticeable flaws. Obviously, it involves a lower price.

  • Thicker metal lines
  • Slight oxidization of the metal
  • Minor air bubbles, scratches, dents
  • Small color overflow
  • Dark spots on glitter
  • Negligible glitter’s missing areas
  • Noticeable underfilled areas (color or polish)

C grades (defective)

These are not for sale, but you may hear about it.

  • Wrong color
  • Unfilled areas
  • Large glitter overflow
  • Important scratches, spots
  • Multiple air bubbles
  • Lack of polish

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Pin grading is the most important thing about quality check!