This mobile application is called Handbook On Precious Stones

This application allow you to read about Precious Stones which mainly are as follows:-

What is Precious Stones?
Physical Characters of Precious Stones
Precious Stones Optical properties
Colors
Hardness
Weight and many more......

If you have a strong interest in precious stones, this Handbook On Precious Stones will come in handy for your full knowledge and reference. This book was originally written by M.D. Rothschild and converted into ebook and online book for the benefit of the many readers outside there.

Install this online Handbook On Precious Stones and it's FREE