Vintage Amethyst Pyrex Pie Plate #229 Baking 91/2 Fluted Edges Deep Dish. The Vintage Amethyst Pyrex Pie Plate #229 is a collectible bakeware item that adds a touch of nostalgia to any kitchen. Made of durable glass with fluted edges, this deep dish pie plate from Pyrex is perfect for baking pies and tarts with a unique and classic design. The vibrant amethyst color adds a pop of color to your kitchen decor, making it both functional and stylish for any baking enthusiast.