Burberry Nickel (304) is a neutral gray with a frost finish that is permanent and retails for $29.00. In comparison, NARS L'Amour, Toujours L'Amour #8 is a warm gray with a metallic finish that is discontinued and retails for $25.00.
NARS L'Amour, Toujours L'Amour #8 is 85% similar — it is more shimmery.