Search SEDIS
Data sets | Publications | Expeditions | Thesaurus |
rubies | |
---|---|
RT | corundum |
gems | |
sapphire | |
SN | Before 1982, also search ruby. Before 1993, included use when of economic value as well as for mineralogical studies. As of 1993, use corundum for the mineral. Indexed with with gems for the commodity. See List C. |