UPGRADE TO 18K GOLD: The 18k Gold upgrade is recommended for the richness of the gold colour and applicable to Yellow and Rose. YELLOW GOLD, 18k is the closest we can get to the tone of genuine gold and still securely set a stone. Stór’s yellow gold is custom mixed to enhance the golden tone. ROSE GOLD, 18k is a stunning colour. It removes some of the vibrant pink of the copper, and is a richer golden rose. WHITE GOLD, 18k shows a little bit more yellow in the raw white gold. All White Gold is Rhodium dipped for a crisp white finish. Upgrading to 18k may result in more Rhodium dips over the life of your ring. PLATINUM: A pure white metal, excellent for securing stones in place. It is important to know that platinum requires regular polishing as upkeep.