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New Article by Brian Pollard Compares ASET and Ideal-Scope

Discussion in 'RockyTalky' started by coati, Apr 2, 2015.

  1. coati
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    by coati » Apr 2, 2015
    B2C Jewels director of consumer education Brian Pollard has contributed a new Pricescope Journal article outlining the differences between the ASET and Ideal-Scope diamond evaluation tools.

    Read the full article featuring both ASET and Ideal-Scope imagery to better understand what these tools offer and how they are used to assess a diamond's light performance. What ASET reveals that Ideal-Scope does not

    Brian, thank you for your contribution to the Pricescope Journal.
     
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  2. Rockinruby
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    by Rockinruby » Apr 2, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Thank you for posting the link. :)
     
  3. Texas Leaguer
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    by Texas Leaguer » Apr 10, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Nice job Brian. Very helpful overview of these valuable tools.

    I would add that they also both provide some information about faceting precision. (It might be helpful to show an aset/is image of a stone that does not have good optical precision). In terms of what they don't do, even with perfect l images, a diamond can have light performance deficits by virtue of certain clarity features, some of which might not be obvious.

    Look forward to your next article!
     
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  4. Diamond_Hawk
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    by Diamond_Hawk » Apr 13, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Thank you Bryan. I am looking forward to discussions about those topics mentioned above - perhaps even another article.
     
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  5. JoshuaNiamehr
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    by JoshuaNiamehr » Apr 16, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco


    Very interesting take on black background vs white background ASETs! I will be testing this out for sure!
     
  6. EmbeeDiamonds
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    by EmbeeDiamonds » Apr 16, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Great article Brian!
     
  7. OoohShiny
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    by OoohShiny » Jun 12, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Great article, will be useful for new forum members learning the ropes, thank you! :)
     
  8. Wink
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    by Wink » Oct 12, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Nicely done Brian!

    I especially liked that you pointed out that the white background is the harshest and most revealing about the diamond being examined. I do not think that most people even know there is an option, let alone the importance of it.

    Wink
     
  9. Diamond_Hawk
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    by Diamond_Hawk » Oct 14, 2015
    Re: New Article by Brian Pollard Compares ASET and Ideal-Sco

    Thank you Wink. This is one of the areas that does not get a lot of mention from consumers or vendors on PS, but is worthy of mentioning anytime an ASET is examined.
     
  10. KatieT
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    by KatieT » May 21, 2019
    IMG_9933.PNG IMG_9938.PNG
    Hi guys,
    I am hoping someone can provide some further insights into customers using ASET and idealscopes. I recently purchased a diamond from a merchant; I thought I had covered my bases, getting a "true" hearts and arrows diamond cut within ideal proportions with a HCA score of 0.9. Unfortunately I wasn't aware (and hadn't been informed by merchant) that I should ask for an idealscope and ASET image of the diamond, so it's now too late to get a professional image. I was, however, able to see the diamond under the scopes in person (using the non professional hand helds). When I first looked, there was a whitish ring around the middle of the diamond, which I interpreted as severe light leakage, however, when I tilted my head this area became red. How do I interpret this? Is the tilted angle which makes the area red depicting the true light return of the diamond or is the initial image from straight on more accurate? The merchant took a photo using her iPhone, which ill upload here. She explained that because there was lots of varying sources of light in the room that it was interfering with the image, and that professional ASET/idealscope images are taken in black rooms with controlled lighting and that this explains the difference in image when I tilted my head. She also explained that professional photos always have more colour saturation than hand held, do you find this to be true and to what extent? Do I need to look again at this diamond and control the exterior lighting conditions better? What tips would you give me before I see the diamond again?

    Thanks so much

    (I've also attached my specs)
     
    Last edited: May 21, 2019
    


    


  11. OoohShiny
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    by OoohShiny » May 21, 2019
    That image looks very leaky but it might be an extremely (over-)strong backlight and the scope not being positioned correctly.

    The lower edge of the scope should be in line with the girdle of the diamond, as I understand it, and both should be parallel to each other in order to avoid the diamond being tilted.
     
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  12. KatieT
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    by KatieT » May 21, 2019
    Thanks so much for taking the time to respond. I 100% agree that this image looks bad and that there's severe leakage; but I just can't understand how a diamond with the above proportions and symmetry could be so leaky. I'm hoping I can improve my technique and see if I can get an improved image.
     
  13. KatieT
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    by KatieT » May 21, 2019
    IMG_9592.jpg
    When you say "in line with the girdle" does that mean the edge of the scope isn't touching the backlight? When I've looked the scope is hard up against the back light.

    Do you know if there's a way to use a photo image of the diamond to analyse light performance? Is there software that does this?
     
  14. tyty333
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    by tyty333 » May 21, 2019
    I'm thinking its the overpowering backlight that is throwing it off. Lets see if we can get @Karl_K to look at it. He the aset/ideal scope set up man!
     
  15. KatieT
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    by KatieT » May 21, 2019
    You are beyond brilliant, I'm so grateful for your help. I have scoured the internet to find detailed tutorials on how to actually hold the scopes themselves and while a lot of people have gone to effort to create content that helps consumers interpret images, there's a dearth of detailed info on how to actually hold a scope and capture an accurate image. Unfortunately the diamond merchants who found my diamond don't even know how to use the scopes let alone help me make sense of what's happening; needless to say, im pretty anxious to get some answers around what's going on, so thank you so much for your help.
     
    


    


  16. KatieT
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    by KatieT » May 21, 2019
    IMG_9935.JPG IMG_9934.JPG IMG_9936.JPG
    A couple of additional images which may help you detectives out there
     
  17. Karl_K
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    by Karl_K » May 21, 2019
    What is the light source being used?
     
  18. OoohShiny
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    by OoohShiny » May 21, 2019
    It looks like the sun, going from the brightness :D lol
     
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  19. sledge
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    by sledge » May 21, 2019
    Some very crude sketches to illustrate what @OoohShiny was trying to emphasis.

    Correctly Aligned:
    Capture.PNG

    Improperly Aligned:
    Capture2.PNG
     
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  20. KatieT
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    by KatieT » May 21, 2019
    Hahaha I genuinely have no idea, this was taken by the merchant and emailed to me. It does seem sun like lol
     
  21. KatieT
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    by KatieT » May 21, 2019
    So this diagram (thank you by the way) shows the diamond being examined from the table down, but the photos of my diamond were taken with the diamond laying on its table with the pavilion side up. Your diagram makes me think I have to be using a different method whereby I hold the diamond with tweezers and align the girdle to the end of the scope with the table, is this a more accurate method?
     
  22. KatieT
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    by KatieT » May 21, 2019
    I am unsure of the light source being used but I can find out. What types of light sources would you recommend?
     
  23. Karl_K
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    by Karl_K » May 21, 2019
    It is about 5x to bright for accurate images.
     
  24. KatieT
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    by KatieT » May 21, 2019
    T
    Thank you Karl, that makes sense now
     
  25. OoohShiny
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    by OoohShiny » May 22, 2019
    Thanks, Sledge!

    I was thinking that some diagrams would be useful - you read my mind :D
     
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  26. OoohShiny
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    by OoohShiny » May 22, 2019
    Are you saying that the diamond was on a glass table, face/crown down, with a light above it, and then the scope being used being held underneath the table?
     
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  27. sledge
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    by sledge » May 22, 2019
    Below is a picture showing what the "upside down" method looks like. Also, if you follow the link, you get some additional nice info on how to properly photograph using an idealscope scope. While @Garry H (Cut Nut) wrote the page for the idealscope, the same principles and techniques generally apply to the ASET hand held scopes.

    Upside Down Method:
    https://ideal-scope.com/taking-ideal-scope-photo/

    [​IMG]

     
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