Czechish pressed glass petals and adjustable white bronze ring.
White bronze: it is an alloy of varying amounts of copper, tin, and zinc. It is commonly used in jewelry, is an ideal substitute for nickel and silver because of its appearance and chemical properties. It is nonmagnetic, very smooth, nickel-free and virtually nonporous. It is also highly resistant to corrosion and breakdown. It also offers one advantage that silver does not, namely, that it will not tarnish.