/usr/share/raster3d/materials/pearl.r3d is in raster3d 3.0-3-2+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # pearl
8
7. 0.6 0.5 0.7 1.0 0.0 0 0 0 1
SOLID 0.800 0.800 0.700
|