A Glowing Marble Maze

I slipped back inside to warm up, trotting straight to the dark wooden credenza where the evening lamp cast a warm pool of light! Resting right in the center was an empty, thick glass coaster with raised circular ridges. I reached into my coat pocket and pulled out my frosted pale green sea glass and my shiny metal washer. Clink! I set the heavy washer into the outer groove, then gently nudged the smooth sea glass into the very center ring with my plush thumb. The lamplight caught the green glass, throwing glowing emerald ripples right across the polished wood! I leaned against the heavy coaster edge, totally fascinated by my glowing mini-altar.