With Sushi/Cheese boards what you put on has to be food safe so we use a danish oil to give a nice shine to ours. These pictures below will have their natural colour intact.
Notice the whitle spots on this cheese board. These are the natural blemishes that are there to stay
A rather tall looking wine glass image on this cheese/sushi board gives it another type of airs and graces!!
This cheese/sushi board shows off its blemishes unashamedly. Note the fish on it. Beautiful reddish hue from this slate.