Chanel Bel-Argus (667) is a cool blue with a metallic finish that is limited edition and retails for $28.00. In comparison, Christian Louboutin Beaute Scarabee II is a cool duochrome with a pearl finish that is limited edition and retails for $50.00.
Christian Louboutin Beaute Scarabee II is 80% similar — it is less shimmery, darker, more muted.