THIS IS A DARK BLUE GREEN SAPPHIRE. IT IS ALMOST BLACK IN LOW LIGHTING. IT HAS A EXCELLENT POLISH. IT WOULD MAKE A GREAT RING. 

TYPE: SAPPHIRE

CUT: CABOCHON

SIZE: 8 mm X 6.6 mm

WEIGHT: 5.08 cts

CLARITY: TRANSPARENT

COLOR: BLUE/GREEN

TREATMENT: HEATED

ORIGIN: MONTANA

HARDNESS: 9