Phinsfan4life
Rough_Rock
- Joined
- Mar 3, 2014
- Messages
- 43
TC1987|1393870441|3626491 said:Phinsfan4life|1393869116|3626474 said:Do you have any recommendations on where I should buy at? I honestly don't know a whole lot about buying diamonds. I can only budget for around $2,500 (setting/diamond).
That what I was worried about with it not being GIA. Any recommendations on wheere to shop?
Thanks everyone
I.D. Jewelry and B2CJewels have done some nice rings. You might contact them and see what they can provide in your price range.
We have the "HCA" Holloway Cut Adviser at the top, under Tools. You plug in the values off the diamond's report and look for score = 2 or less. It's a basic first-pass screening tool to eliminate some of the really leaky and poorly-made diamonds right off the bat. Any diamond with an AGS 000 rating, you don't need to bother. But run it for most of the GIA "excellents", because some are a lot better performers than others.
Pricescope has a very restrictive list of proportions to look for, and this is what probably a majority of PS buyers choose in a modern round diamond (antique cuts, "fancy" cuts are much more variable)
depth - 60 - 62% - maybe up to 62.4% (deeper may face up smaller diameter than typical for carat weight, though)
table - 54- 57% (most seem to like 55%-56%, but 57% is not huge)
*crown angle - 34- 35 degrees
*pavilion angle - 40.6- 41 degrees
girdle - avoid extremes, look for thin to slightly thick, thin to medium etc
polish and symmetry - very good and above
*Crown and pavilion angles must work together; increase one = must decrease the other. With angles at the shallower ends ( CA 34- PA 40.6) and steeper ( CA 35- PA 41) check to make sure these angles complement in that particular diamond - eyeballs, Idealscope, trusted vendor input - check as appropriate!
Then PS has loosely labeled three varieties of "ideal" round diamonds:
FIC firey ideal cut - Taller crown height, steeper crown angle 35 degree or more, smaller table, deeper stone, more biased toward fire, may look "dark" (fire is kinda the opposite of white light, brilliance) or face up smaller diameter due to its depth
TIC Tolkovsky ideal - Aims for a good balance between fire and brilliance, in all lighting conditions
BIC brilliant ideal -- biased a bit more toward brilliance (brightness, white light) than fire, may have lower crown angle, larger table, shallower depth.
The HCA, I think, still tells you things like TIC or BIC or FIC along with the cut rating and other info.
Diamonds that have a very low crown and a huge table really tend to not show as much fire, or it's all out around the narrow rim around the table.
TC,
I know you said if it's an AGS 000 diamond then no need to run it.. However, I did run it in the HCA and it came back with 2.4 "very good"...
Is this is a diamond I should consider? Or should I pass?
http://www.jamesallen.com/loose-diamonds/round-cut/0.80-carat-j-color-si2-clarity-ideal-cut-sku-112261