Excellent question - the short answer is you should be doing everything possible and then once finding a "soft spot" in the market take advantage of it until it dries up. A more targeted response is I would consider building out a massive email/newsletter list and starting some drip email marketing/re-targeting campaigns so you can get people who have visited the site to return and actually complete an order. Given your target market (jewelry buyers) I would say having an opportunity to continue the discourse is absolutely critical; especially with people's patterns on luxury goods being what it is )(the majority of aren't going to make their final purchasing decision the first time you visit their site, but rather over several instances hitting the page and then also doing off-site research as well.) This also lets you extend your website conversion funnel further by allowing a key interaction/conversion point not only be visiting the site, then the catalog page, then adding to cart and then checking out, but also allows you to get people give you valuable data earlier in the chain just by putting up an email sign-up form (perhaps a light-box roadblock pop-up on the main page?)