Natasha Denona Calypso Blue (05M) is a warm duochrome with a sparkle finish that is permanent in palette and retails for $29.00. In comparison, Terra Moons Terra Borealis is a warm duochrome with a metallic finish that is permanent and retails for $8.50.
Terra Moons Terra Borealis is 85% similar — it is lighter, warmer.
