Inclusion characteristics of sapphire samples from Madagascar: (a) parting induced by lamellar twinning in sample ML-01; (b) triangular parting pattern embedded with green substance in sample ML-01; (c) directionally arranged needle-like inclusions in sample ML-01; (d)reddish brown flaky solid and rectangular transparent inclusion in sample ML-03; (e)square-shaped transparent solid inclusions in sample ML-03; (f)gas-liquid two-phase inclusion in sample ML-01