Plain Ring 18K White Gold Other Products. Eternity Ring Round Diamond 0.37 ct. Baguette Diamond 1.02 ct. 18K White Gold More Detail Tennis Bracelet Diamond 8 ct. 18K White Gold More Detail Eternity Ring Diamond 0.44 ct. 18K White Gold More Detail London Blue Topaz and Diamond Halo Ring Blue Topaz 3.8 ct. Diamond 0.43 ct. 18K White Gold More Detail