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These specimens are labeled as polychrome corundum as sapphire and ruby. They show a dual range of tones, between red and purple, depending on the incident light and even within the same crystal. They have a very good quality and brilliance that makes them stand out from other of the same species. On some faces we can observe geometric striated lines. Ruby crystal is disposed on a matrix of brilliant mica (muscovite-biotite). Fluorescence UVA.
Madagascar
Amboarohy, Zazafotsy, Fianarantsoa Province
4,4x3,8x2,6 cm
41.1g
