Terra Moons Hydra is a warm duochrome with a sparkle finish that is permanent and retails for $8.50. In comparison, Natasha Denona Abalone (246DC) is a warm lavender with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Abalone (246DC) is 90% similar — it is less shimmery, lighter.