Natural Tanzanite 4,04 ct. in commercial mixed cheсker cut, trillion shape.  (4.04ct.)

Very nice colored Natural Tanzanite 4,04 ct. in commercial cut trillion shape.
Bright intence slightly violetish-blue color and exellent luster. Stone  was faceted in India, but have right proportion and don't have window or extinction.  Polishing quality not bad. Only one problem - uncorrect facet meet points. Stone look nice. Eye clean stone. VS clarity (No visible inclusions).

Please, HD quality video below.
Mineral - Tanzanite (Zoisite)
Color - Violetish-blue
Weight - 4,04 ct.
Shape - Trillion
Dimensions - 10,73 x 10,69 x 10,65 x 5,76 mm
Treatment - Heated
Origin - Tanzania
Clarity - VS (eye clean)
Hardness - 6,5 on Moh's scale