Ring in sterling silver with a 31 carat fancy cat smoky quartz and openwork details. All Sarah Kosta jewelry is crafted by hand in our studio in Uruguay, South America, by Sarah and her skilled team of artisans. We only use high-end metals and natural stones. This ring comes with a Sarah Kosta authenticity certificate and it's presented in a velvet bag. Please store it in its corresponding velvet bag separated from other pieces to prevent marks and scratches. Take it off when washing your hands, bathing, going to the beach, and using any hand or body creams. Avoid contact with detergents, soaps and water. These are my recommendations in order to keep the jewels in perfect conditions.