The ideal scope is a portable device, developed by
Garry Holloway. It basically gives you a
visual assesment for the amount of light leakage found in diamonds.
Many folks have found this tool very useful in their search for diamonds.
I love mine! Not only did I use it to help me select a diamond, I will always be able to identify my stone by looking at it through my ideal-scope. The pattern of reflection is a pretty darn good signature. Be aware though that most jewlers will give you big time condescending looks when you break it out and try to convince you that only THEY can tell you if the cut is any good. My advice is don't listen to them!
Idealscope fantastic gadget which allows you to see how efficiently a diamond is cut, enabling you to give a quick assesment on the make of a diamond, displaying the amount of light leakage. Really is a resourceful instrument for diamond buying, I have found mine most useful, Oh and it fits nicely into a pocket.
Alison.