https://themeforest.net/item/goldsmith-jewelry-store-woocommerce-theme/42570063

If you’re looking for a theme that is clean, mobile focused, multivendor marketplace, multipurpose, responsive, high performance and simple, yet offers unlimited possibilities, GoldSmith Jewelry / Diamond Store WooCommerce Theme is exactly what you’re looking for then. If you like, just install the first demo and start selling or easily transfer everything about your brand to this theme.