18kt rose and white gold Nudo Petit blue topaz ring from Pomellato featuring 18kt rose gold, 18kt white gold, polished finish, halo band, engraved logo and topaz. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery.. We've partnered with Good On You — an independent agency that rates how brands perform in relation to their impact on the planet, people and animals, with a multi-criteria rating simplified to a five points scale. In order to be awarded our conscious label, larger brands need to score a minimum of four out of five ('Good'), while smaller brands must score at least three out of five ('It's A Start'). This item comes from a brand rated three out of five ('It's A Start') by Good on You. Please note, this is a brand-level rating and does not guarantee that this product is made with conscious materials.. Learn more about what makes a product Conscious on our Conscious Criteria page.