I''m new to the game and still trying to figure out what cut to buy. Can someone offer me some insight into Asscher cuts? ie, what is a good depth, table, price relative to princess and radiant, availability, any other helpful hints.
Unless you are looking for the branded "Royal Asscher" cut, the rest would be rightfully called "square emerald cut diamonds" and for a standard on emerald cuts you can use AGA's for starters (found at gemappraisers.com)
On top of that (and as far as I know) the one obvious feature of both traditional asschers and the branded is a smaller table ( tentatively, say downwards of 60% and reaching below 50% on old stones). Aside this, asschers are supposed to have a more "octagonal" outline with the corners clipped deeper than rectangular emerald cuts. Of course, these are all a matter of taste like anything is.
There are quite a few "versions" of the emerald cut on THIS page with some squares (=non-branded asscher types) amid.
It is not straightforward to compare the brilliance of step and modified brilliant cuts (such as asscher versus princess). At the best of each cut model, these are all quite brilliant in technical terms, but rather different visually.
It must help to compare the shape, look and brilliance of different cuts against the same background and on one scale of brilliance; The Ideal Scope and GemAdviser do this, if you want to go that way, of course.
Please click above for the page about the non branded Asscher cuts
Here's a non branded with medium sized corners
AnA has some very good points- the octagonal shape with large corners are desirable.
Traditional Asschers do have the smaller table sizes AnA mentioned - yet there are stones with tables between 60-72% that still achieve the wonderful step cut Asscher look