[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Minerals and Metals in Ancient India](https://indike.org/pramana/ins.science.biswas-1996) › v2.c47.142 # Minerals and Metals in Ancient India v2.c47.142 Minerals and Metals in Ancient India v2.c47.142 - **Language:** English ### [v2.c47.142](https://indike.org/pramana/ins.science.biswas-1996.v2.c47.142) \*Ruby\* : See Corundum Al₂O₃; for true or oriental Ruby colour red. Latin rubeus (red). - [Previous: v2.c47.141](https://indike.org/pramana/ins.science.biswas-1996.v2.c47.141) - [Next: v2.c47.143](https://indike.org/pramana/ins.science.biswas-1996.v2.c47.143) - [Up: v2.c47](https://indike.org/pramana/ins.science.biswas-1996.v2.c47) --- Source: [https://indike.org/pramana/ins.science.biswas-1996.v2.c47.142](https://indike.org/pramana/ins.science.biswas-1996.v2.c47.142) · Pramāṇa