Here I am offering a cool open hole mine insulator that has a nice pinky fingernail sized white rock in the glass. I thought this was a no emboss piece but upon very close inspection there is embossing but it is SO faint that you almost cannot see it. White rock is right there in front at the WG lip curve. Fortunately this rock is white and sparkly, the glass is quite dark, pretty much a dark teal aqua in colour so it's hard to show this backlighted when taking photos. There are lots of annealing/cooling fractures in this piece around the pinhole openings, standard chipping around the hole end and a no glass missing bruise at the top opening that caused a no feel um crack in the rear side top to bottom. Insulator displays mint from front where the rock is and will make a very unusual addition to your mine insulator collection. Do you have one with a big rock in it? If not.....first mail to me.... $30 + actual shipping.