A seam ripper or stitch picke is used to retrieve loose stitching.
It has a forked tip.
Located between the teeth of the fork as a sharp edge knife.
One of the teeth is longer than the other.
This is meant to to scroll below the stitching on the blade itself. causing them to be severed and scrolling.
The other tooth of the fork is shorter and has a obtuse point.
This will prevent damage to the substance.