Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Ratanamālaka
Ratanamālaka:A platform in Gandhamādana,at the foot of the Mañjūsa tree,where Pacceka Buddhas assemble on special occasions such as the uposatha (SNA.i.52).
It seems also to have been called Sabbaratnamāla.E.g.,SNA.i.66.