4 replies to this topic

[Nicole_2006]

All:

file:///Users/pipiyihao/Desktop/Picture%201.png

I am new. Glad I found this place. Could anyone help look at the diamond below? If it is good for a $9000? It is confirmed eye clean (natual light , 8" distance looking from the top).

However, from its cert, it has 3 very long inclusion lines (twinning wisps?)! I heard lots of terrible talks regarding the big inclusions, chips, broken... however, my budget is really limit. Please help.

Soooo Urgent! Appreciate! (We do need a ring before Mar. 6)

[url="http://www2.gia.edu/reportcheck/index.cfm?fuseaction=home.showReportVerification&reportno=2121868708&weight=1.51"]GIA Certificate Link![/url] (So worried about the inclusions here)


ROUND BRILLIANT
Measurements:7.32 - 7.37 x 4.57 mm
Carat Weight:1.51 caratColor Grade:GClarity Grade:SI2Cut Grade:Excellent
PROPORTIONS:
Depth:62.2%Table:57%Crown Angle:35.0°Crown Height:15.5%Pavilion Angle:41.0°Pavilion Depth:43.5%Star length:50%Lower Half:80%Girdle:Medium to Slightly Thick, FacetedCulet:None
FINISH:
Polish:ExcellentSymmetry:ExcellentFluorescence:NoneComments:Additional twinning wisps are not shown.Surface graining is not shown.

Attached Thumbnails

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[LaurieH]

It looks like you're in the ballpark pricewise, so the price is fair. If you have an eye-clean SI2 and you otherwise really like the appearance of the stone, I'd say go for it. Personally, I'm one that would trade down in size or Color so that I could trade up in Clarity, but if you're dead set on having something that hits or passes the 1.5 carat mark, I'd say you're ok. Everything else about the stone looks ok--Twinning wisps often are not visible without magnification (not that it's NEVER visible, but they're kinda etherial, as the term "wisp" would indicate--they're caused by the change in growth direction when the diamond is forming. You've got some feathers on the pavilion, but once the diamond is set, those won't matter, and if there is no color to the crystal, it aught to be pretty invisible to the naked eye.

The fact that the diamond still stayed in the SI clarity range instead of being knocked down to I range, is a good indication that you don't have to worry about the integrity of the stone being compromised. BUT, the proof is always in the pudding--have you seen the diamond itself?

[davidelevi]

Twinning wisps can be totally invisible, but the only way to find out is to see the stone.

FWIW - I hold diametrically opposed views to Laurie on clarity vs. size or colour, but that's just personal taste. Crystal - now, that's another thing. But you can get good (or poor) crystal relatively independently of the presence of inclusions.

Do not worry about the apparent visibility of inclusions on the plot - they are there to illustrate where the inclusions are relative to each other, and not to provide an idea of how the stone will look to the eye. For example - here is a rather busy plot


Here is the stone prior to being set - some of the inclusions are visible, but the large feather that is the grade setter and the most apparent inclusion on the plot is not dramatically apparent, although it's there if you know...



Here is the stone set in a ring - even less is visible



and once it's on a hand, it's totally non-noticeable. And this is roughly 1:1 scale on a 15" screen, photo taken in full sunlight

[denverappraiser]

Davide,

'Crystal' is used by GIA on their report in a rather different way than I think you are using it. In their usage and with this stone it's a mineral inclusion in the stone and it's most definitely an inclusion. Richard Hughes uses it as a way of describing transparency and although I agree that it SHOULD be part of the diamond grading lexicon, it's not part of the GIA system.

Cool rock by the way.

Nicole,

What' you're observing is a common problem with trying to buy diamonds based on the plotting diagram. Don't think of it as an illustration but more like a map. These are symbols to indicate various things but a big red line to show a twinning whisp doesn't make it more visible, it's just the way things are mapped. As mentioned above, whisps are, well, whispy, and most are strikingly difficult to find even with magnification.

[davidelevi]

Absolutely right, Neil. Apologies for not making the distinction clearer, or using a different word. FWIW - the orange stone above, as well as having good Crystal (transparency) also has 3 crystals (inclusions).