[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.c33.5 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c33.5 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c33.5 - **Language:** English ### [v2.c33.5](https://indike.org/pramana/ins.science.ray-1902.v2.c33.5) It is sometimes asserted that the phosphorescence of diamond was first observed in 1663 A. D. by the celebrated Robert Boyle. Bhoja, (11th century A.D) however, mentions this property.\* Faults in precious stones due to isolated grains of minute gravels etc., embedded in the mass \[now technically called "enclosures"\], are also referred to.† - [Previous: v2.c33.4](https://indike.org/pramana/ins.science.ray-1902.v2.c33.4) - [Next: v2.c33.6](https://indike.org/pramana/ins.science.ray-1902.v2.c33.6) - [Up: v2.c33](https://indike.org/pramana/ins.science.ray-1902.v2.c33) --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c33.5](https://indike.org/pramana/ins.science.ray-1902.v2.c33.5) · Pramāṇa