All of our chips are incredibly durable, we first print directly to the chips and then lay down a clear matte finish.  They have a rock hard finish which protects the chips from scratches, friction, and the elements (especially for those of you using these as golf ball markers outdoors).  
All of our ceramic poker chips are casino grade and durable as well.  Our ceramic chips are in play in casinos all over the world and in one case they’ve been using the same chips for 6 years.