Mount-blown in Murano, Italy. The glassblower applies a wrap over a gather of glass and then pulls the undulating pattern. A contrasting rim is created with a separate bead of glass. Amber and grass have a thin rim of red; ivory has a thin rim of green; and jade has a thin rim of amber. ADA. Comes with satin nickel or bronze thumb screws.
No two shades are exactly alike. There will always be variations, which are typical of a handmade product and contribute to its beauty.