by cpcohen » Feb 16, 2002 I ordered an IdealScope a few weeks ago, and had my first chance to use it today. A local jeweller assured us that he could get the high-quality cuts we're looking for. After the stones arrived, he gave me their Sarin numbers, and I ran them through the HCA. It came back with unflattering comments about all three stones. . So, we went down and looked. The stones seemed dull and lifeless, but that could have been the nice flat flourescent lighting in his work area. Under the Idealscope, it was obvious that there was _a lot_ of leakage through the pavillion on all of them, and _no_ black areas at all. Two had reasonable symmetry (but not full H&A patterns), and one was just a mess. Best of all, my wife and I saw the same things, which we often don't. Any doubts I had about the factual basis of these rather abstruse discussions of "ideal proportions", leakage, and the usefulness of the Idealscope as a screening tool, are completely gone. It works. I have seen with my own eyes . . .