spicolicpa
Shiny_Rock
- Joined
- Sep 25, 2003
- Messages
- 243
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The first one has the 8* type girdle tweaking to reduce leakage.----------------
I had in my possession the EightStar FireScope(tm) for approx. a year and have photographed many diamonds under it. Of the stones I photographed the blacks were pretty consistent from arrow shaft to arrow head. I know they had made some modifications in their new symmetry scope (closer to the modifications I had made in my own LightScope) but I have not worked with their newer version so I don't know the specifics and how our highest rated stones test out on their newer scope.
Regards,
Rhino
There are a number of factors though that may be causing the redish areas in that pic.
1. Light output not being directed at the high angles.
2. The distance from the lens of the camera to the diamond being photographed.
3. The size of the aperature between the camera lens and the diamond being photographed. (The hole in the red wherewith to look at the diamond).
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Bingo, Mara----------------
On 11/19/2003 3:42:32 PM Mara wrote:
8*?
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No, it's just a reflection from the lenses.----------------
On 11/19/2003 3:45:42 PM spicolicpa wrote:
Does the change in color in the arrowhead at the 'one-o'clock' position indicate anything?----------------
It means pavilion main facets are thinner while low girdle facets are longer. According to DiamCalc it may result in a bit higher contrast.----------------
Arrows seem thin - what does that mean exactly?
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