20 September Birthstone Nail Ideas That Make Sapphire the Star

Moody Marble Nails

This moody navy marbled mani looks intricate, but it’s surprisingly easy to DIY. Start by dotting two shades of blue polish, along with a touch of white, onto each nail. Then, use a nail sponge or a cling wrap–covered dotting tool to gently smush the colors together until you achieve your desired marbled effect. Clean up the edges with an angled brush dipped in acetone, and seal everything with a glossy top coat.