This beautiful Nigerian phenakite is nearly flawless. There is one negative crystal on the very edge of the gem that is not visible unless you look very closely for it. There are a few other tiny internal negative crystals that can only be seen with a loupe. It is an eye-clean gem. It weighs 5.80 carats and measures 12.70 x 8.60 x 7.95 mm. It would make an excellent center stone for a ring.