“Classic example of twinned spinel crystals (spinel-law twin) from Vietnam. This is a large example, with very distinct twinning. Minor surface irregularities are due to calcite inclusion, now dissolved away. Good red-brown color. Overall size of mineral specimen: 4.5x3x3 cm. Size of individual crystals: 4.5 cm.”
John Betts - 30th November 2000