7" wide x 3.5" high
Center of blue beach glass framed by Helnar sand framed by crater ash. Rim glazed with Seljalandfoss. Foot glazed with sediment from Boston Harbor near Logan Airport.
Other glaze is a rutile slip.
This porcelain becomes transparent and also can warp, which it did on this piece, which was in a hot spot near the kiln's flue.