All orders come with "Certificate of Authenticity". The certificate guarantees that the Polish stoneware offered in Ceramika Artystyczna online store is original, quality one stoneware and it was hand crafted and hand painted by Ceramika Artystyczna workshop in Bolesławiec region of Poland. Ceramika Artystyczna is leading workshop in Bolesławiec region, established in 1950, also known simply as "CA". Stoneware made by Ceramika Artystyczna is of the highest quality and most exquisite artistry. This workshop is a co-op of artists and produces tableware, bakeware, kitchen items, and household accessories. Traditional and the Signature (Unikat) designs are highly artistic, with vibrant colors, subtle shading, and intricate details.