Andradite Var. Demantoid Garnet
Antetezambato, Ambanja District, Diana Region, Antsiranana Province, Madagascar
Small Cabinet, 7.7 x 6.5 x 2.6 cm

Very fine, glassy and gemmy, olive-green crystals, to 1.8 cm across, lie flat on a massive, whitish garnet matrix. Some crystals are doubly terminated and at least two exhibit clear evidence of hopper growth, rarely seen in the garnet family of minerals. The crystals are extremely large for topazolite. They have superb luster, and most are translucent enough to look through to the matrix underneath. Interestingly, this is a intermediate brown to green in color, and it is unclear whether to classify this particular hue as andradite variety demantoid, or variety topazolite.