Iridescent White Carnival Seashell/Clam Plate - Set Of FourInfo: These iridescent white carnival seashell plates evoke the shimmering allure of the sea, where light dances on their smooth, clam like curves. An exquisite testament to the craftsmanship of yesteryear, these plates are more than mere tableware; they are a piece of timeless elegance. Style: Carnival Glass Materials and Techniques: Hand blown glass, iridescent finish Place of Origin: United States Period: Mid 20th Century Date of Manufacture: 1950s