A question about resistances

Yesterday I've beated the Staglord, and I've experienced myself the effects of cold for the first time in this game I think that a simple +3 cold resistance cape was enough for the mountains but it's not. So, dumb question: with the notable exceptions of Frostcursed armour and similar armors or beverages, or abyssal gear, one can improve existing cold (and other) resistances at the blacksmith like the 0.2 spirit/healt/whatever regeneration in the jewelry? Thx in advance