
Soapstone
The first reliquary was excavated from the historic site of Piprahwa in 1895 by William C. Peppe, a British engineer and landowner, and the second was found in 1972 by S M Srivastava, an Indian archaeologist. They were found within stupas at the site. Carved out of soapstone, the two reliquaries are identical in shape, differing only in size. Both have a spherical body and a lid which is surmounted by a sphere on a circular disc, followed by a cone on a smaller disc.
For more details, go to the Encyclopedia of Buddhist Arts: Artifacts, page 221.