M. Graham Gloss Acrylic Medium & Varnish - 32 oz M. Graham & Co. from $29.81 $49.69 Qty. Out of Stock SKU: GRM-82-450 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. M. Graham Gloss Acrylic Medium & Varnish is used as an extending medium or varnish. I can be used with all acrylic paints. Tweet