新加坡金沙app「诚|信」

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      Ideal Scope Diamond Cut Quality Tool

      The Ideal-Scope is based on a principle discovered by Mr Okuda in the 1970s. A lens with a hot pink reflector lets you see how much of the red/pink light comes back from the diamond.

       

      Garry Holloway uses one of his Ideal-Scopes
      Garry Holloway uses one of his Ideal-Scopes

       

      An Ideal-Scope is a simple diamond brilliance/leakage gauge; the most brilliant diamonds look bright pink/red with a black star and minimal white or pale areas. White areas in a diamond show light transmitted from behind the diamond called leakage – the enemy! The blackness of the lens mimics an observer’s head blocking out the light. Ideal cut round diamonds have small ‘V’ shaped white leakage features at the girdle.

      Ideal-Scope Illustration
      Ideal-Scope Illustration

       

      An ideal-Scope also shows a diamonds symmetry and many vendors will use an ideal-scope photo for the ‘arrows’ and a Hearts and Arrows (H&A’s) scope image for the ‘hearts’ or rear of the diamond view. This is a great idea because the ideal-scope image provides more info on the diamonds cut than a arrows image. The main difference is the H&A’s scope shows the arrows as white where-as the ideal-scope shows a black eight-pointed star in symmetrical well-cut diamonds. Both scopes are a by-product of Mr Okuda’s discovery.

      Ideal-Scope reference chart
      Ideal-Scope reference chart

       

      Click Here to get your Ideal-Scope
       

      Garry Holloway BSc, FGAA, DipDT, NCJV.

       

      Learn about ASET-scope here.