[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D.](https://indike.org/pramana/ins.science.ray-1902) › v2.c32.17 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.17 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.17 - **Language:** English ### [v2.c32.17](https://indike.org/pramana/ins.science.ray-1902.v2.c32.17) KNOWLEDGE OF GEMS Relative weight—Hardness—Lustre, Transparency, Colour and other Optical Properties—Fusibility—General and Concluding Remarks 30-41 - [Previous: v2.c32.16](https://indike.org/pramana/ins.science.ray-1902.v2.c32.16) - [Next: v2.c32.18](https://indike.org/pramana/ins.science.ray-1902.v2.c32.18) - [Up: v2.c32](https://indike.org/pramana/ins.science.ray-1902.v2.c32) --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c32.17](https://indike.org/pramana/ins.science.ray-1902.v2.c32.17) · Pramāṇa