This thimble is hand fabricated by me from a flat sheet of Sterling Silver. The top cross section is hand cut with my engraving tools so it could have other textures that would make this a functional thimble. I can hand engrave intitials in the font of your choice. I will be designing some other thimbles with dimples on the side for quilters. This one measures 17.5mm but I can make this to your size.