This is a lot of ten AA quality Loose Oval London Blue Topaz measuring 7x5 mm each. Total Gemstone Weight: 8.75-11.00 Carats. ,GEMSTONE:London Blue Topaz,SHAPE:Oval,AVERAGE COLOR:Dark Blue,AVERAGE QUALITY:AA,MINIMUM CARAT TOTAL WEIGHT:8.75-11.00,GEMSTONE DIMENSIONS:7x5 mm,NUMBER OF STONES:10,COLOR:Blue,MINDIMENSION:5.00 mm,MAXDIMENSION:7.00 mm,STONE CREATION METHOD:Natural,TREATMENT METHOD:Irradiation