Sebastian, sometimes called Seabass, was mostly known for making both face marbles and pattern marbles where he placed lines on the marbles and whirled them together into sweet lines. I have a few of his fun pieces available here. This is one of his pattern marbles, and it is brilliant! Gorgeous olive colored sparkle glass is swirled into beautiful lacey patterns over a dark black background (actually deep cobalt blue if you hold it up to really bright light). This one is just so, sooo elegant and beautiful!!