Rings made with blue sandstone are eye-catching and can be worn for both casual and formal occasions. This 2-pieces coffin-cut ring set is designed with a 9*6mm Coffin-shaped blue sandstone engagement ring and a curve V shaped moissanite milgrain wedding band. Know Your Stone-What is a Blue Sandstone? Blue sandstone, also known as ???blue goldstone??¡§¡è or ???starstone,??¡§¡è is a stunning and unique gemstone that has gained popularity in the world of jewelry and fashion. It is not a naturally occurring stone but is a man-made material created by mixing glass with copper flecks to give it its distinctive sparkly appearance. Gems Info: Main stone: 6x9mm Coffin Shaped Natural Blue Sandstone Side stone: 1.5mm round Colorless moissanite Matching Band: Round Cut moissanites