Arandisite: Gemstone Information
The presumably local name arandisite was given for a while to an attractive apple-green material, described only in a paper by Partridge in Trans. Geol. Soc. South Africa 32 (for 1929) which gave the composition as a tin silicate. The material had hardness 5, SG 4 and RI 1.70. The green material was sometimes cut with surrounding brown limonite (name used for undifferentiated oxides or hydroxides of iron). The source was the Arandis tin mine, Namibia.