The Burmese amber mines are know for their varied and higher quality amber pieces. If you put aside the ethical aspects of it. it is excellent and high quality Cretaceous amber. Chinese amber with inclusions is rare Burmese amber is much more abundant. i own some Burmese amber and they are often higher quality pieces for their age. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.