I don' t think that this Penny Black stamp is of lilies, but it is certainly gilded. I used Stamp 'n' Bond with Versamark and then added the gilding flakes in the Autumn Rose blend.
I overstamped the image with an Inkylicious script stamp in regular gold pigment ink; the sentiment is from Personal Impressions and heat embossed in gold.
Cuttlebug Swiss Dots adds a little interest to the backing paper and the elements are mounted on a little gold weave textured paper. Penny Black - Flowers Crafty Catz - Embossing