ChunkyCushionLover
Ideal_Rock
- Joined
- Jun 21, 2009
- Messages
- 2,463
I agree with you David.Date: 6/24/2009 2:57:59 PM
Author: Rockdiamond
HI everyone!
John, I don''t feel this is like the difference between a VS and an SI. Anyone interested, if given the choice, and ability, to see the imperfection, would likely pick the cleaner stone ( all other things being equal)
I''m saying that people who can see the difference won''t always pick the stone with the Hearts and Arrows. A percentage will pick well cut stones with larger (60%) tables that don''t do as well on ASET/IS or HCA.
I''m saying it''s not going to be a small percentage of interested people ( ''interested people'' are not just casual observers, but people who love diamonds)- I really do believe it will be around 1/2.
I''m saying that a fair percentage of interested, able viewers won''t like the same thing John or Garry Holliway, or I might prefer.
There is a ''prevailing view'' here on PS. Perfect optical symmetry is ''good'' and light leakage is ''bad''
I feel that the prevailing view here does not take into account people''s taste.
I''ve shown this with two stones that were examined by David Atlas who performed ASET and IS on them. Here''s the thread
The experts on PS agreed that one stone was less well cut based on it''s IS/ASET images.
My position is that the stone shown to be less well cut by the ASET and IS is prettier. My position is that the ''lesser cut'' stone will be chosen by many interested shoppers- people who CAN see the difference.
Many will pick the stone described on PS as ''not as well cut''- this will happen in store lighting, or dim lighting- in ANY lighting.
They will pick it clean, or dirty.
I''m saying the preference they have for a slightly spreadier diamond without hearts and arrows won''t change due to months or years, as David suggests. My preference has not changed over the past 30+years.
Without question, if someone is looking for a stone with perfect optical symmetry, then the tools work very well.
If they want exactly what many people posting here like, the IS and ASET are invaluable.
But not everyone likes heart and arrows. Not everyone that sees what is called ''light leakage'' here on PS sees it as a bad thing.
Many people cannot tell with their just their eyes the difference between a very good cut and an AGS 000 cut round brilliant in terms of light performance even in different lighting conditions. I would venture to say in those bright LED lights in many stores more than 50% cannot tell the difference.
Most people don''t care what the diamond looks like under an IS or ASET or even under a loop they care about what it looks like faceup or in their ring.
So when making the choice given similar light properties:
1) They may go for the spreadier stone because that is visible to almost everyone.
2) They may go for the cheaper stone because that everyone notices.
The fact that in most B&M stores the viewing area is under bright lights means a customers ability to see small differences between the two is even further diminished.
However this comparison is only relevant up when comparing two stones with almost identical properties except cut grade which is a rare comparison especially in B&M stores due to availbility. In addition the variation in light performance between a range of Very Good stones and a range of Excellent stones can also be non trivial. For example a lower range excellent can be almost the same optics as a high performing Very Good cut stone.
Regards,
CCL