10.5" x 1.5"
Would what we know as the image of Earth from space as the blue marble have been, 625 million years ago, been a white marble? I love hearing people speculate about that and this piece wears three materials and one sentence:
"....a white marble a Snowball Earth spinning above a molten core while continents drift and asteroid dust scatters and settles."
On porcelain clay: center of seaglass surrounded by Mid-Atlantic Ridge rock slurry surrounded by Namibian rock that proves global glaciation during the time some geologists call, "Snowball Earth". That's surrounded by sediment laden with K-T Band dust. Lavender rim assembled from refined materials that frames a thin wash of Earth crust slurry on the back.