NARS L'Amour, Toujours L'Amour #6 is a warm copper with a frost finish that is discontinued and retails for $25.00. In comparison, MAC A Glimmer of Gold #3 is a warm copper with a metallic finish that is permanent in palette and retails for $21.00.
MAC A Glimmer of Gold #3 is 95% similar — it is more shimmery, lighter.