A further stage of development of jewellery art in Ukraine happened under the period of Polish-Lithuanian State rule and is characterized by the expansion of a new style of the Renaissance period. The most powerful centers of jewellery making at the time were Lviv, Kyiv, and Kamianets-Podilskyi. Lviv was the leading center for a substantial period of time. The main feature of Renaissance jewellery in Ukraine was technical sophistication using ancient decorative elements. Some of the most famous Ukrainian jewelers whom we know of today were Nykolay, Lavrentiy, Symon, A. Kasiyanovych, and H. Ostafiyevych. They worked hand in hand with Poles, Germans, Jews, Hungarians, Armenians, Italians and Scotsmen. The independent goldsmiths' guild in Lviv was founded more than four centuries ago. Jewellers of this period were involved both in the production of items for monasteries and churches, and the production of items for secular use such as dishes and jewellery. Silver belts were a specialty of the craftsmen of Lviv. They had characteristic silver or gilded engraved alternating oval and rectangular plates.