ColourPop Snakebite is a warm copper with a metallic finish that is permanent in palette and retails for $6.00. In comparison, Charlotte Tilbury Oyster Pearl (was Marie Antoinette) is a warm gold with a metallic finish that is permanent and retails for $34.00.
Charlotte Tilbury Oyster Pearl (was Marie Antoinette) is 80% similar — it is darker.