I use the Audio Sensibility Statement Silver Phono Cable. It uses Ohno Continuous Cast (OCC) silver with a purity of 99.99998% (7N).
http://audiosensibility.com/blog/products-2/phono-cables-occ-copper-and-occ-silver/#/!/~/product/category=3749226&id=18243484
http://audiosensibility.com/blog/products-2/phono-cables-occ-copper-and-occ-silver/#/!/~/product/category=3749226&id=18243484