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»  » cushion terms beginner needs help
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cushion terms beginner needs help |
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| P: 3/13/2005 8:34:35 PM | |
kelly13615 Rough Rock Total Posts: 6 Last Post: 3/15/2005 Member Since: 3/12/2005 |
We are in search of a cushion and I hate to be a beginner but I am...I need help with some terms i.e. depth, table, cutlet and on what to look for in our search and also what you all would suggest to look for in these areas below. What would be ideal? Thanks so much! Measurements: Depth: Table: Cutlet:
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| Posted: 3/13/2005 8:34:35 PM | |
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There are 1 replies to this message. There are 1 replies on this page. |
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| P: 3/14/2005 8:17:56 AM | |
valeria101 Ideal Rock Total Posts: 14,048 Last Post: 4/30/2006 Member Since: 8/29/2003 |
Well... there must be a dozen or so cuts all called "cushion". Since the facet patterns are different, any "ideal" set of proportions would not fit any as well as the standard for rounds fits. Perhaps this is confusing.  What I am trying to say is that no combination of specs on the GIA cert ( = table, depth, girdle, length and width) will help guessing how brilliant a cushion cut might be.Those specs are useful as an approximation of the shape (square or rectangular) and size for weight (matching the surface of a round brilliant at most a quarter carat havier, if not of the same weight should not be very tall order, IMO). Size has allot to do with girdle thickness (ideally no thicker than "medium", so anything thin to medium, I guess) and total depth (say, up to 65% can't be that bad). Other than this, I would avoind overly large tables (say, over 65%) for two reasons: for once, a large table has good chances to occur together with very low crown height which makes the girdle area fragile (ok. perhaps this is not likely at 65% table - but firther definitely so) and reduces the potential for great light return (although, this last bit doesn't need to be - depending on the rest of the cut details not reported on the lab cert). Better than "good" symmetry on the GIA cert is a plus, but not a tremedous one. Just great if it happens on a well proportioned stone - it would be an extra label of quality (hopefully) with no visual impact. Reasonable depth, table, size and girdle do not guarantee brilliance. Nothing really does but comparing each stone to others or against some sort of standard. It is quite unlikely to obtain enough fine cut cushions for a relevant side by side comaprison - with so many stones not cut for brilliance out there, it may take a few dozens before hitting one of the best. Judging brilliance against a standard is easier - tools like the "Brilliance SCope" and the "Ideal Scope" work for cushion cuts, and are not ust applicable to branded stones. Good Old Gold has a tutorial on cushion cuts - the page is not complete aparently, but still helpful: LINK (scroll down for the presentation)The instructions for fancies on ideal-scope.com apply to cushion cuts as well. Around here, "Moremoremore" chased the "perfect cushion" for a long time and the record of her serach might be useful. Hope some of this helps  Ana "The greatest experts are only as good as the sum total of what they have seen." [Souren Melikian] |
| Posted: 3/14/2005 8:17:56 AM | |
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