While you can play around with your base colour, Inzerillo says non-egotiables for this nail art style are: a base coat, top coat, nail art brush, and gold or silver chrome flakes; we would try The Unicorn's Den (£3.50).
After adding your base coat, use the flakes with your nail art brush to make lines that "resemble your favourite tile, pottery, or marbleized look," says Inzerillo. Or, for a more "intentionally carefree" look, aim for a design that resembles uneven cracks. Top it off with a top coat, which can be shiny or matte depending on the look you're going for.