What is Crystalis?
Crystalis is a line of art pottery produced from 1906 through 1907 by the Roseville Pottery Company in Zanesville, Ohio.

Who designed Crystalis?
The Crystalis line glazes were created by John Herold, applied typically to forms designed by Frederick Rhead.

Crystalis was designed as a successor to the Mongol and Mara lines, both of which were not commercially successful. John Herold had studied large crystal growth in glazes, and executed numerous tests on Egypto, Mongol, Mara, and Royal shapes. These pieces can be found in collections bearing wafers for all of those lines, obviously glazed in Crystalis glazes.

When was Crystalis made?
The Crystalis line was produced in 1906 and 1907.

The two surviving catalog pages show only 14 forms available. The form styles chosen for the Crystalis line are closely related in style, with many buttressed forms and organic art nouveau molds. The majority of these forms are found only in the Crystalis line and in the Crystalis glaze.

The color variations as well as the crystalline growth size and abundance make for a huge range of pieces for the collector. It is much more true in this line than most that no two pieces are alike.

Below is a compendium of the known shapes and designs, with pieces from several other lines treated with Crystalis glaze shown afterwards.