At last! Grout that was designed for stained glass mosaics! This reclosable jar of raven black grout comes in powder form. Just mix with a little bit of water and it's ready to go. Instructions are on the back of the jar.
Photo note: Grout appears much lighter in photo due to camera flash.
The picture doesn't do these tiles justice!! The iridescent finish is so pretty!! If you want, you can flip them over & use them as solid black tiles with no color. The surface is smooth on both sides.