Smashbox Prismatic Petal is a warm peach with a sparkle finish that is limited edition and retails for $39.00. In comparison, Marc Jacobs Beauty Showstopper (81) is a warm peach with a sparkle finish that is limited edition and retails for $49.00.
Marc Jacobs Beauty Showstopper (81) is 85% similar — it is less shimmery, lighter.