Classic Poem

To these join'd John the chrysolite,
foundation-stone the seventh there;
the eighth the beryl, white and clear;
the twin-hued topaz ninth was set;
the chrysoprase came next, the tenth;
the gentle jacinth then, eleventh;
the twelfth, the surest in every plight,
the purple amethyst, blent with blue.
The wall rose sheer above the steps,
of jasper as glass that gleaming shone;
I knew it, as he pictured it
in Apocalypse, the Apostle John