Order of the Sacred Treasure
Post-2003
The classes were abolished in 2003, so all decorations from 2004 had a name attached. Here are the current names.

Grand Cordon of the Order of the Sacred Treasure  (previously the 1st Class decoration)
The Order of the Sacred Treasure, Gold and Silver Star (previously the 2nd Class decoration)
The Order of the Sacred Treasure, Gold Rays with Neck Ribbon (previously the 3rd Class decoration)
The Order of the Sacred Treasure, Gold Rays (previously the 4th Class decoration)
The Order of the Sacred Treasure, Gold and Silver Rays (previously the 5th Class decoration)
The Order of the Sacred Treasure, Silver Rays (previously the 6th Class decoration)

The 7th and 8th classes were abolished. You can see pictures of the current designs
HERE.
Silver Rays
Silver Rays
Sacred Treasure Silver Rays (corresponds to the old 6th Class) with lapel
rosette, gold suspension bar, and case.
Hallmarked 'YD.'
Sacred Treasure Gold and Silver Rays (corresponds to the old 5th Class).
Sacred Treasure Gold Rays (corresponds to the old 4th Class).
Sacred Treasure Gold and Silver Rays (corresponds to the old 5th Class).
Hallmarked 'A5.'
Order of the Sacred Treasure Gold and Silver Rays original award document dated Heisei 17
[2005] November 3rd. Given to a  man named Sato Setsuo.
Miniature Silver Rays (6th Class)
Comparison with full-sized medal
(5th Class) Gold and Silver Rays