Questions from a beginner - Pavilion angle / depth

[John P]

I read this on PS a while back - Should I interpret that they're deliberately sabotaging the stock so that H&A gets more differentiated to justify for higher premium?

No, they are not targeting h&a any longer. They are targeting higher weight retention but the numbers still look good on the report.

Ah OK thanks for that clarification. It's sad they'd deliberately twist the pavilions which directly compromise light performance while they're perfectly capable of producing high precision H&A stones. For economics or not, dark nevertheless...

That may be, but it's a wide practice. Precision cut diamonds retail for more to the public, but that reflects higher operating costs in vetting & selection, planning, top tools & labor skill and a % of weight polished away in refinement. All things equal, there's not nearly as much profit in fashioning precision cut, performance optimized diamonds as there is in pushing your diamond output to the heaviest minimal threshold of wider, less demanding cut grades.

 

[blueMA]

That may be, but it's a wide practice. Precision cut diamonds retail for more to the public, but that reflects higher operating costs in vetting & selection, planning, top tools & labor skill and a % of weight polished away in refinement. All things equal, there's not nearly as much profit in fashioning precision cut, performance optimized diamonds as there is in pushing your diamond output to the heaviest minimal threshold of wider, less demanding cut grades.

From what I understand, the 8 main crown and pavilion facets are often blocked automatically by machines nowadays, so for even that to be compromised by earlier planning, it goes beyond the extra cost involved for precision final refinement and polishing by hands.

 

[Karl_K]

From what I understand, the 8 main crown and pavilion facets are often blocked automatically by machines nowadays, so for even that to be compromised by earlier planning, it goes beyond the extra cost involved for precision final refinement and polishing by hands.

Hi,
I'm not following you here.
Every step in the process has to be geared towards the outcome they want to archive, be it h&a or cheated stones.

 

[blueMA]

Hi,
I'm not following you here.
Every step in the process has to be geared towards the outcome they want to archive, be it h&a or cheated stones.

I understand - I was elaborating why I think it's especially a sad affair that they choose to cut tilted pavilions to salvage weight when the crucial performance angles that contribute to diamond performance could be blocked precisely by automated machines, regardless of involving the higher operations costs JP pointed out that reduce profit margin.

 

[Garry H (Cut Nut)]

There is an Indian manufacturer misusing the very first Ideal-Scope capture system and this image looks very much like theirs.
I just checked on RapNet - yes the stone is in Mumbai and they claim the stone is from Canadian rough.
I have alerted them before that their set up for photography is flawed, but they have tin ears.