Composition: Aluminum oxide
Nomenclature: Named after the Greek word sappheirhos which means "a blue stone" because of its color.
Industrial Uses: Gemstones, precision bearings, abrasives.
Additional Notes: The blue, gem variety of corundum. A member of the Hematite group of minerals.
Australia : Scott 562 : 10 cents : 16 Oct 1974
Sapphire (corundum)
Kenya : Scott 110 : 10 shillings : 13 Dec 1977
Sapphire (corundum)
Sri Lanka : Scott 507 : 60 cents : 16 Jun 1976
Sapphire (corundum)
Sri Lanka : Scott 509 : 2 rupees : 16 Jun 1976
Sapphire (corundum)
Thailand : Scott 625 : 2 baht : 7 Jun 1972
Sapphire (corundum); quartz
Thailand : Scott 627 : 6 baht : 7 Jun 1972
Sapphire (corundum)
Tanzania : Scott 311 : 2 shilling : 22 May 1986
Sapphire (corundum)