Diamond Jewelry Forums

Picture Gallery

Video Gallery

|

Search |

Posted Today |

Most Active |

Help

ť Home ť

ť Diamond Prices and Grading ť

ť RockyTalky ť

ť Interesting examples

Interesting examples

P: 5/8/2002 4:50:47 PM
Pricescope Administrator Total Posts: 8,265 Last Post: 1/5/2008 Member Since: 1/1/2000	Here are two stones were posted today on Pricescope auction by Whiteflash. 1.08 crt, D, SI2, HCA=0.3 (Excellent) within BIC range and 1.10 carat, HCA=0.5 (Excellent) within BIC range Since there were many requests for Ideal-Scope and DiamCalc simulations I decided to take a closer look at the information provided. Whiteflash did a good job by getting 3D Sarin scan for these diamonds and importing it into DiamCalc. Unlike ordinary Sarin report with average crown and pavilion angles, 3D Sarin scans comprise measurements of each diamond facet and hence give better presentation of a diamond. Now we can download GemAdviser files for these diamonds ( 108dsi2_fs.gem and 110fsi2_fs.gem) to generate diamond pictures with different lighting including Ideal-Scope. We are also able to create a movie with tilting diamond. Plus, we are able to run the cut evaluation for these diamonds to estimate light return, light leakage and contrast (important feature for human perception of brilliance and scintillation). What is interesting about these diamonds is that they are not cut to ideal proportions according to AGS grading system. They are falling in AGS grades 5 and 6 because of the shallow crowns: 30.5°. Now if we'd look at the ideal-scope pictures, we'll see virtually no light leakage. DiamCal evaluation of the light return (LR) is 0.97 (Very Good) which is on the same level as any ideal cut diamond (LR = 1.0 correspond to theoretical Tolkowsky proportions). Light Leakage calculation for these diamonds is significantly better than any traditional ideal cut diamonds: 1.11 and 1.26. Contrast: 0.94 and 0.87 which is fairly good. Garry Holloway considers these type of diamonds as Brilliant Ideal Cut Both score Excellent on HCA: 0.3 and 0.5 Very interesting feature about these diamonds is their spread. They look larger for their carat weight. E.g. 1.08 carat stone has 6.78 mm diameter. For comparison, Tolkowsky cut diamond of the same weight will have 6.62mm diameter, steep/deep AGS0 - 6.57mm. Finally, the price of these diamonds is $1,000 less than similar AGS0 diamonds. Conclusion. This sort of diamonds can be a good option for those who doesn't want to pay extra $1000 (20%) for AGS-ideal cut but still want to get a nice stone. Pricescope
Posted: 5/8/2002 4:50:47 PM

There are 7 replies to this message. There are 7 replies on this page.

P: 5/8/2002 7:58:22 PM
ChetLaura Rough Rock Total Posts: 62 Last Post: 6/19/2002 Member Since: 3/2/2002	Thanks for the interesting information. The more I learn, the more I want to know!!!
Posted: 5/8/2002 7:58:22 PM

P: 5/8/2002 9:14:23 PM
Cola Rough Rock Total Posts: 24 Last Post: 1/19/2003 Member Since: 4/9/2002	Wow! Talk about finding excellent diamonds in the rough! It goes to show several things: 1) You can find excellend diamonds that are not GIA or AGS certified (and not pay the premium) 2) You can find excellend diamonds that are not ideal cut diamonds and get a great deal! I love the way these diamonds have been presented in the auction too. So much more information and the entire diamond information can be downloaded and viewed with GemAdviser! This might revolutionalize how diamonds are sold over the internet! Really amazing!
Posted: 5/8/2002 9:14:23 PM

P: 5/8/2002 9:53:20 PM
Pricescope Administrator Total Posts: 8,265 Last Post: 1/5/2008 Member Since: 1/1/2000	Did you guys try GemAdviser? The rocking diamond movie is really impressive. Pricescope
Posted: 5/8/2002 9:53:20 PM

P: 5/8/2002 10:39:33 PM
ChetLaura Rough Rock Total Posts: 62 Last Post: 6/19/2002 Member Since: 3/2/2002	Thanks again for sharing your knowledge - I did try the new gemadvisor and it is very nice. I downloaded the proportions of my diamond, but I am a little curious - in the summary it gave the carat size as .79 - my diamond is 1.705 - would this effect the outcome? I am just curious - I am very happy with my diamond - and the reults on gemadvisor were excellent - but I am just curious. Thanks again!!
Posted: 5/8/2002 10:39:33 PM

P: 5/9/2002 4:06:44 AM
Iiro Cut Rock Total Posts: 186 Last Post: 3/16/2009 Member Since: 9/8/2000	Hi, Is this the first time we are seeing GemAdviser in use for selling diamonds? I am also preparing a cd to my customers. In the cd there is gemAdviser and the stones I got. S Iiro Suokko G.G. Kultasepänliike Suokko www.suokko.com
Posted: 5/9/2002 4:06:44 AM

P: 5/9/2002 6:01:24 AM
Pricescope Administrator Total Posts: 8,265 Last Post: 1/5/2008 Member Since: 1/1/2000	Hi Sibelius :) Since you have GemAdviser files ready, why don't you post some of your stones here too? We have quite a few Europeans browsing this site. Pricescope
Posted: 5/9/2002 6:01:24 AM

P: 5/9/2002 8:17:44 AM
Iiro Cut Rock Total Posts: 186 Last Post: 3/16/2009 Member Since: 9/8/2000	Hi Leonid, Good idea. Will look into it.:) S Iiro Suokko G.G. Kultasepänliike Suokko www.suokko.com
Posted: 5/9/2002 8:17:44 AM

Previous Page

Next Page

Ť si quality diamond Ť

ť Diamond Calc ť

Next Topics
color vs. size? choosing color/ clarity grades Leonid's posting on WhiteFlash Auction cut vs color/clarity Big table of otherwise nice emerald cut Where can I find a selection of cushion-cut diamonds? Diamond Taxes to the UK bowtie effect AGA ... how consumer go about sending stone in for GIA cert looking for jewelry manufacturers/designers gregg ruth Deal of the year-Princess?Advise! clarity vs size Holloway cut advisor for GIA cert stones question about heart & arrow To Cut Nut : About ideal cut defined by hca EGL cert get appraisal DirtCheap diamonds.com diamcalc for BIC quality stone Buying a princess cut need input please(new) D Flawless 5 carat 5 carat D Flawless - need valuation Open culet Brilliance Is this a good one? good deal Need Help... Price Advise EGL stone good price or not? good price or not

Jump to:

Contact Us \| Back Home \| Privacy Statement \| Forum Agreement \| Forum Policies
Ideal BB Version: 0.1.5.4.beta1	Message forum software powered by the Ideal BB

Pricescope - Knowledge - Diamond Prices - Tools - Resources - About

Š 2000-2009 Pricescope. Terms of Use Privacy Policy Disclaimer
forum archives