Hey strmrdr.........

[wildstarUD]

What would you say good dimension guidelines for an asscher would be?
Depth, Pavillion, Table, Crown, etc?

I''ve seen that sheet from the apprasal company that someone has previously linked to but all the diamonds I seem to look at have a mix between what would be IA and like IIIA lol. So any guidelines you could give me no matter how wide they would be would be great. And anyone else is free to jump in with their 2 cents as well.

 

[strmrdr]

An asscher is one of the hardest diamonds to pick from without someone looking at it in my opinion.
Either a trusted vendor, appraiser or yourself needs to eyeball the diamond and get pictures!!!!
Never ever ever buy an asscher you havent seen first without good pictures!!!!!!

The numbers which have changed slightly over time and might be refined as more is learned:

I look for a table in the 50s low 60s.
Depth between 60% and 75%, discount over 70%
crown height 10%+ some of the best are 15%+
LW ratio as close to 1 as possible.
thick enough girdle too give durability generaly med or above.
Even girdle of no more than one step m-sthick for example to better the odds on calling stones in.
clipped cornered square vs more octagonal is personal preference. My feelings on this have changed and I like the larger corners better, but as long as they are wide enough to give a pleasing look with strong windmills its not a downgrade.
Then it comes down to all eyeballs.
strong and even windmills?
Are the squares well defined and concentric?
Does it have the 10 mile deep look under indirect lighting?
Blinding fire in the right lighting?

Id say that better than 95% of them will fail the last 4 tests

vg or better on polish and symmetry if shopping online.
To me it shows that the cutter took better care in cutting it and there is a better chance of the rest being right.
That isn''t always the case but its something to think about.
That''s the basics.

Beyond the basics you get into balance stuff like too much weght in the pavilion vs the crown.

 

[wildstarUD]

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