Antique topaz cross set in gold ( 53mm long ) on a gold chain (19'' long) with a foiled topaz clasp, English circa 1820

The Regency era in the United Kingdom is the period between 1811—when King George III was deemed unfit to rule and his son, the Prince of Wales, ruled as his proxy as Prince Regent—and 1820, when the Prince Regent became George IV on the death of his father. The Regency is noted for its elegance and achievements in the fine arts and architecture. This era encompassed a time of great social, political, and even economic change. War was waged with Napoleon and on other fronts, affecting commerce both at home and internationally as well as politics. Despite the bloodshed and warfare the Regency was also a period of great refinement and cultural achievement, shaping and altering the societal structure of Britain as a whole.