@harmonyjewelslondon: Coloured stone engagement rings are THE trend of 2026 And this oval blue sapphire in a halo with a microset diamond band is exactly why. Stunning alone. Unreal together. If your forever ring has a little colour in it, you're in the right place. DM us to book you 5-15 min virtual consultation! . . . Blue sapphire engagement rings coloured stone bridal set oval blue sapphire halo ring alternative engagement rings with wedding band