Hwagak is a transparent plate made of finely ground ox horn. Hwagakjang refers to the handicraft skill of making such a plate or to an artisan with the skill. The materials are scarce and the work requires a great deal of time and a meticulous procedure. This artwork was chiefly used by upper class people.
During the Goryeo Period (877 – 1394), cases for keeping Buddhist scriptures and rosaries were made from the skin of the hawksbill sea turtle (Eretmochelys imbricata). Artisans used a technique of applying colors to the back of an object which permeated to the front, along with mother-of-pearl. This practice continued until the mid-Joseon Period (1392 – 1910). In the ensuing period, handicrafts adorned purely with hwagak developed.
Objects made with hwagak skill include wardrobes, chests of drawers, side tables, dressing tables, pencil cases, powder cases, sewing rulers, desks, workbaskets, hand-held fans, and writing brush handles.
Hwagak handicraft features elaborate ornamentation in colors and patterns.