basically a freebie pattern if you go to my newsletters, (PDQ enews Issue 101) or help me with the DSL and internet and programming for this site. LOL.  Find the beautiful jewel colors as glass droplets, small as you can find, or perhaps large one inch ones and assmeble them into a triangle.  I have found that they are rarely completely round, so you can make the tree taller by orienting the long diameter vertically.