Popsugar Fashion Weddings Coloured Engagement Rings These Coloured Engagement Rings Will Make You Forget All About Diamonds 21 October 2018 by Sian Meades View On One Page Photo 1 of 30 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Kate Middleton's Sapphire Ring One of the most popular gemstone engagement rings is definitely Kate's, which previously belonged to Princess Diana. Previous Next Start Slideshow WeddingsFashion TrendsEngagement RingsJewelryBridal