Just finished a small, about 1/2 carat, oval from a sliver that my friend said was purported to tsaisite. (1/04/2014) It is the yellow that the trade has come to call tsaisite , but as I have posted before it is not the proposed new manganese species. Which has not been found yet.
The oval has a 1.5 ratio and the hardest part of the effort, for me, with this kind of piece, is positioning it. The rough did have a high concentration manganese (I can sort of tell from the polishing and color) and any meets that you wanted to adjust are simple and quick. It is flawless which is nice, but it has a touch of green which makes it much less interesting to me. I am a pure yellow man.
Picture to follow.