Melanite — specimen 0641, photo © NMNHS
Weight: 0.80 ct; size: 6.70 | 4.13 | 2.83 mm; shape: octagon; colour: black; clarity: opaque; cut: excellent; treatment: none.
Clean specimen; design ‘Octangulum’, excellent cut by Tan Pen.
More information from ‘Classification’
From the Greek word μελανός (melanos), ‘black’. A black Ti-bearing variety of andradite garnet.