Colorless non-lead float glass with natural green tint; cut, slumped float glass, cut, ground, polished, assembled. Four thin-walled, deep, bell-shaped (rims only slightly flared, closed ends are curved) vessel forms varying only slightly in dimension are stacked one inside the other so that openings are at top, rims have been ground and polished at slight angles so that when the forms are assembled vertically the edges extending one above the other are not parallel, rims seem to be tilted in opposite directions on alternating vessels; round base ends of (b),(c), and (d) are suspended one inside the other and (a); (a) narrow base ground slightly flat, scratched on base: "B Frijns/1994"; (b) scratched on end point: "2"; (c) scratched on end point: "3"; (d) scratched on end point: "4".