5x7mm Oval Sky Blue Topaz Engagement Ring With Diamond 14k White Gold Hollow filigree design MSRP: $425.00 Skye 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 0.9 carat oval cut blue... Choose Options Add to Wish List Compare