Tea Pot and Six Cups on Lustered Porcelain Artist: Karen Grubaugh of Art on Porcelain Since its creation in 9th century Baghdad, the art of luster was a closely guarded secret. Not until the 18th century was the formula discovered by Meissen artists. Treasured above all art mediums by the Crown Heads of Europe as few as six pieces out of every 100 created would be considered acceptable. Few artisans mastered the difficult medium then and today there are few luster artists world wide. It is the artist's hope that this will become your family's heirloom. [Dishwasher safe]