Frequently used stitches in 14th century embroidery are:
These stitches cover the entire surface smoothly. Modern silk threads suitable for these types of stitches are Devere Yarn 1200 dernier loose twist filament silk and Au ver soie spun silk. Devere Yarn is very glossy, Au ver a soie silk has got more texture. The patch of gobelin stitch on the left is made using Devere Yarn silk and the right with Au ver a soie: