vname, you have very good information about distribution of the gemstones in Nepal and khai ke khai ke, you are absolutely correct about our resources development. riten as amitraja and ritthe said pushparaj is known as yellow sapphire. And for Maverick, there are many more things in the world to know if you can get time from girls.
abnish, of course we can enrich these gemstones in Nepal. The required machinaries are also within reach of our local businessmen. Some of them have already started there work on it. But we need more skilled labors. Indian labors are world reknown for the gemstones enrichment. Some of our local businessmen have also established an organization. It has the link to the map showing the distribution of the gemstones in Nepal. This is not the good map, however it is useful for basic information.
http://nrmassoc.org/Major%20Gem%20Localities%20in%20Nepal.pdf