5061 Corundum, Luc Yen, Yen Bai Province, Vietnam September 29, 2019 Steve Asia Vietnam Blue Sapphires
North and Central Americas North Carolina United States ncat VHD15, Corundum, Old Pressley Mine, Haywood Co., North Carolina, USA November 17, 2019
Montana North and Central Americas United States 10020 Corundum, Bozeman Corundum Mine, Gallatin Gateway, Montana November 16, 2018
Africa Madagascar 5056 Corundum, Zazafotsy Quarry, Ihosy District, Fianarantsoa Province, Madagascar September 29, 2019
