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Decisions ...which stone?

P: 9/12/2008 9:03:22 AM
chloball Rough Rock Total Posts: 3 Last Post: 9/15/2008 Member Since: 9/12/2008	Have been trying to pick the best. Have found 2 stones with very little going on inside. Both are really clean...only wisps and some feathers.GIA facetware rates them both the same. Very different when I plugged in the numbers here (H is a buy and I should only buy the G if price is right.) Is the G too deep? Should I deffinitely nix the G? HELP...this is nerve racking! Want to do the right thing! Round Brilliant Measurements: 7.52 - 7.57 x 4.74 mm Carat Weight: 1.70 Color Grade: G Clarity Grade: SI1 Cut Grade: Very Good Proportions: Depth: 62.8 % Table: 59 % Crown Angle: 36.5° Crown Height: 15.5 % Pavilion Angle: 40.8° Pavilion Depth: 43 % Star length: 50 % Lower Half: 80 % Girdle: Slightly Thick, Faceted Culet: None Finish: Polish: Excellent Symmetry: Excellent Fluorescence: Faint Round Brilliantfficeffice" /> Measurements: 7.69 - 7.75 x 4.64 mm Carat Weight: 1.71 Color Grade: H Clarity Grade: SI1 Cut Grade: Very Good Proportions: Depth: 60.1 % Table: 57 % Crown Angle: 31.5° Crown Height: 13 % Pavilion Angle: 40.8° Pavilion Depth: 43 % Star length: 50 % Lower Half: 75 % Girdle: Slightly Thick to Thick, Faceted Culet: None Finish: Polish: Excellent Symmetry: Very Good Fluorescence: None Comments: Twinning wisps are not shown. Surface graining is not shown. Born to Shop!
Posted: 9/12/2008 9:03:22 AM

There are 4 replies to this message. There are 4 replies on this page.

P: 9/12/2008 10:05:00 AM
Ellen Ideal Rock Total Posts: 22,894 Last Post: 11/6/2009 Member Since: 1/13/2006	Hi chloball, If it were me, I'd pass on both. You can do better. Yes, the first is a bit deep, among other things. The table is a tad larger than we like to see. The crown angle is much steeper than it should be to work with that particular pavilion angle also. (and really steeper than I would ever consider) The second one looked good, until we got to the crown angle. That's definitely more shallow than you want to go. Here are some tips to help in your search. Depth 60-62.2 Table 54-58 And because GIA rounds there numbers, here's a cheat sheet for crown and pavilion angles. These need to work in harmony, they determine so much of how well the diamond performs. With that said, here's a "Cliff's Notes" for staying near Tolkowsky/ideal angles with GIA reports (their numbers are rounded): A crown angle of 34.0, 34.5 or 35.0 is usually safe with a 40.8 pavilion angle. If pavilion angle = 40.6 lean toward a 34.5-35.0 crown. If pavilion angle = 41 lean toward a 34.0-34.5 crown. GIA "EX" in cut is great at its heart, but it ranges a bit wider than some people prefer, particularly in deep combinations (pavilion > 41 with crown > 35). HTH! ~~~~~~~~~~~~~~~~ "It is also important for the State to inculcate in its subjects an aversion to any 'conspiracy theory of history' for a search for 'conspiracies' means a search for motives and an attribution of responsibility for historical misdeeds." -Murray N. Rothbard, in The Anatomy of the State John Swinton [1829-1901] Chief Editorial Writer of the New York Times (Considered "the Dean of his Profession" by his peers), when asked to toast an 'Independent Press' in a gathering at the National Press Club, circa 1880 "There is no such thing in America as an independent press unless it is in the country towns. You know it, and I know it. There is not one of you who dare express an honest opinion. If you express it you know beforehand that it would never appear in print. I am paid... for keeping my honest opinions out of the paper I am connected with. Others of you are paid similar salaries for doing similar things.... The business of the New York journalist is to distort the truth, to lie outright, to pervert, to vilify, to fawn at the feet of Mammon, and sell his country and race for his daily bread, or for what is about the same thing, his salary. You know this, and I know it and what foolery to be toasting an 'independent press.' We are tools, and the vassals of rich men behind the scenes. We are jumping-jacks. They pull the strings and we dance. Our time, our talents, our lives, our possibilities, all are the property of other men. We are intellectual prostitutes."
Posted: 9/12/2008 10:05:00 AM

P: 9/12/2008 10:17:38 AM
Lorelei Ideal Rock Total Posts: 34,272 Last Post: 11/25/2009 Member Since: 4/30/2005	Date: 9/12/2008 10:05:00 AM Author: Ellen Hi chloball, If it were me, I'd pass on both. You can do better. Yes, the first is a bit deep, among other things. The table is a tad larger than we like to see. The crown angle is much steeper than it should be to work with that particular pavilion angle also. (and really steeper than I would ever consider) The second one looked good, until we got to the crown angle. That's definitely more shallow than you want to go. Here are some tips to help in your search. Depth 60-62.2 Table 54-58 And because GIA rounds there numbers, here's a cheat sheet for crown and pavilion angles. These need to work in harmony, they determine so much of how well the diamond performs. With that said, here's a 'Cliff's Notes' for staying near Tolkowsky/ideal angles with GIA reports (their numbers are rounded): A crown angle of 34.0, 34.5 or 35.0 is usually safe with a 40.8 pavilion angle. If pavilion angle = 40.6 lean toward a 34.5-35.0 crown. If pavilion angle = 41 lean toward a 34.0-34.5 crown. GIA 'EX' in cut is great at its heart, but it ranges a bit wider than some people prefer, particularly in deep combinations (pavilion > 41 with crown > 35). HTH! Ditto. Nothing is more sacred as the bond between horse and rider...no other creature can ever become so emotionally close to a human as a horse. When a horse dies, the memory lives on because an enormous part of his owner's heart, soul, very existence dies also...but that can never be laid to rest, it is not meant to be... - Stephanie M Thorn
Posted: 9/12/2008 10:17:38 AM

P: 9/12/2008 11:12:55 AM
Stone-cold11 Ideal Rock Total Posts: 6,930 Last Post: 11/25/2009 Member Since: 9/9/2008	going by the numbers, on HCA the second stone actually scores quite well, 1.1 in the BIC range. A brilliant cut, different from the traditional TIC cut. Only light return is in the very good range the rest all scored excellent. Did you notice the difference in performance when u are comparing them visually?
Posted: 9/12/2008 11:12:55 AM

P: 9/12/2008 2:09:14 PM
chloball Rough Rock Total Posts: 3 Last Post: 9/15/2008 Member Since: 9/12/2008	Thank you all....food for thought. Am still shopping...will need to decide by Monday! Born to Shop!
Posted: 9/12/2008 2:09:14 PM

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