The stone is beautiful and spectacular. The spectrum was specially "taken", i.e. the chemical composition was determined. And the composition contains zinc and this already indicates that this stone can be classified as a ganoshpinel. They are also blue and blue, like cobalt. Now blue and blue overcoats are often classified as cobalt without definition, i.e. without special research. There are expert opinions on this spinel. Look at the separate photo. There is a video - just ask. Home. taking a photo is also no problem!
Origin - Tanzania
Color - Blue
Clarity - clean, no cracks. There is an interesting mineral inclusion visible under a magnifying glass.
Cut - Excellent. The stone shines completely
Size - 7.58 x 6.32 x 3.93 mm