I've been using my oozuku asagi for a few weeks now without sealing it first. From what I'm reading in the forums this may be a bad idea, correct? I do have clear nail polish at home that I can use...but no shellac on hand.

Has anyone actually proved this is being something you should definitely do or not? We don't keep our stones outside like they did in the past or like carpenters sometimes do now.

Maybe sealing jnats should be in the wiki...