Thin twinned crystal, partial sixling. Width 18.5mm. Stack of 170 images.
Heavy specimen. Sharp pale blue crystals. Video best viewed full screen.
Ruby. Kerry Banks Collection
Black hexagonal hibonite with green spinel (out of focus top-middle) from Ambindandrakemba, Tranomaro Commune, Amboasary District, Anosy Region (Fort Dauphin Region), Tuléar Province (Toliara), Madagascar.