• Casein: fish scale pearlized, England, sew-through

    Casein identification guide: casein is a thermoset semi-synthetic polymer made from milk, hardened in formaldehyde

    7. Many pearlized caseins, made by mixing fish scales into the plastic batch.

    source: Button Materials A-Z: Identification Guide
    by Jocelyn Howells

    Button Specs

  • Casein: fish scale pearlized, England, sew-through

    Casein identification guide: casein is a thermoset semi-synthetic polymer made from milk, hardened in formaldehyde

    7. Many pearlized caseins, made by mixing fish scales into the plastic batch.

    source: Button Materials A-Z: Identification Guide
    by Jocelyn Howells

    Button Specs