Wanted to make something cool for my aunt. This was my first time using marble. IT IS HARD TO ENGRAVE/SCORE WITH!!!!!   My 40w laser at 100% had to be so slow to make any difference! But, if its too slow bits of the marble  bounce off like sparks and the laser machine thinks there is a fire. It looks so cool though when its getting engraved. Highly recommend yall try it at least once!