Blackwork is a form of embroidery that uses black thread on a white or light-colored fabric. It often features intricate geometric patterns, floral designs, or scenes, and is traditionally done using a technique called counted thread embroidery. This style originated in the 16th century and was popular in England and Spain. The designs in blackwork can be created using various stitches, such as backstitch, cross-stitch, and double running stitch. Blackwork is not only decorative but also serves as a way to showcase the skill of the embroiderer. Today, it remains a popular technique among embroidery enthusiasts and artists.