5mm Princes Cut Swiss Blue Topaz Engagement Ring With Diamond 14k White Gold Stacking Band MSRP: €313.16 Swiss blue topaz engagement ring is the december birthstone ring in the world. There are three colors of blue topaz: sky blue,swiss blue and london blue. It is normally set in solid rose gold,yellow gold,white gold. This is a 0.5 carat princess cut blue... Choose Options Add to Wish List Compare