THIS IS A VERY LARGE MIDNIGHT BLUE SAPPHIRE. IT WOULD MAKE A GREAT PIECE OF JEWELRY. IT IS FROM THE ELDORADO BAR MINE, MONTANA U.S.A. WE DO NOT GET MANY SAPPHIRES IN THIS DARK COLOR. IT IS ALL NATURAL EARTH MINED.
TYPE: SAPPHIRE
CUT: OVAL
COLOR: DARK BLUE
WEIGHT: 4.41 cts.
SIZE: 11.8mm. X 8.8mm.
CLAIRITY: I1
LUSTER: GOOD
TREATMENT: HEAT
ORIGIN: MONTANA
HARDNESS: 9
4.41ct. MIDNIGHT BLUE MONTANA SAPPHIRE