What you need:
Very light grey
Matte Top coat
Eye shadow sponge applicator
Thin pointed brush
Step 1: After cleansing each nail, apply a layer of base coat to them. Then, apply 2 thin coats of the sheer white, and let fully dry.
Step 2: Apply a bit of the light grey to the sponge applicator and begin to apply it to the nail in patting motions. Repeat this with the medium grey lacquer over top to add dimension. This acts as a background color to our marble effect.
Step 3: Taking your black polish on the thin pointed brush, draw rigid lines going in unparalleled directions. While the nail polish is still wet, take a bit of your base coat with a brush and “blend” the harsh lines.
Step 5: Apply a matte top coat to each nail to finish up.