Cap 4-10cms across, convex, later flattening and with a depression.
The colour of the cap is often a rich violet, purple and brown colour sometimes greenish or ochre or yellowish; hard and the skin doesn't peel back far.
Below a young mushroom, the cap in convex in shape
Gills adnexed to slightly decurrent, narrow, at first a primrose colour that ages pale golden yellow.
Stipe 30-80mm high/10-15mm wide; sometimes white, often lilac to grey rose. There's a distinct primrose colour in the examples below.
Flesh white; taste very hot, smell slightly fruity.