Ratna

A Sanskrit term. Usually as prefix (rat na...) ...indicates a gem or gems, jewel(s), precious or jewel-like quality. Also see dkon mchog, Ratnasambhava, the Ratna-family, and the ratna-heruka/sadhana, Nectar Quality (bdud rtsi yon tan) in association through che mchog. (RWB)

According to Sanskrit source [1] - a gift , present , goods , wealth , riches; a jewel , gem , treasure , precious stone (the nine jewels are pearl , ruby , topaz , diamond , emerald , lapis lazuli , coral , sapphire , Gomeda ; hence {ratna} is a name for the number 9 ; anything valuable or best of its kind, ie. an excellent son) ; a magnet , loadstone.