Comments for GIA 4Cs Blog

Comment on Understanding Diamond Fluorescence by GIA 4Cs of Diamond Quality

GIA 4Cs of Diamond Quality — Thu, 03 May 2018 19:14:00 +0000

There is a perception in the trade that fluorescence has a negative effect on the overall appearance of a diamond. As a result, fluorescence can affect diamond price. However, GIA studies have shown that, for the overwhelming majority of diamonds, the strength of fluorescence has no widely noticeable effect on appearance. GIA’s study shows the diamond industry would be better served by considering each individual diamond on its own visual merits. An appraiser will be able to help you with your question regarding value. You can find an appraiser by contacting the various appraisal associations listed on our website: https://www.gia.edu/library-appraisal-associations

Comment on Diamond Inclusions Defined by Alex Gonsalves

Alex Gonsalves — Thu, 05 Apr 2018 03:13:00 +0000

Can be detected ''Grain Center'' and ''Graining'' in the Rough Stones, when is observed by 10x lupe .

Comment on Diamond Inclusions Defined by GIA 4Cs of Diamond Quality

GIA 4Cs of Diamond Quality — Fri, 16 Mar 2018 18:32:00 +0000

Not all blemishes are the result of damage. If your diamond has a grading report with a plot diagram, you can check to see if a blemish, or other clarity characteristic, was present when the diamond was graded. We do not comment on what’s visible in a photograph because the diamond needs to be physically examined. We suggest asking a gemologist or your jeweler to look at the diamond.

Comment on GIA Diamond Grading Scales: The Universal Measure of Quality by GIA 4Cs of Diamond Quality

GIA 4Cs of Diamond Quality — Fri, 16 Mar 2018 18:31:00 +0000

Hi Trieu le – we’ve forwarded your comment to our Lab service team so they can respond to you directly.

Comment on Diamond Inclusions Defined by GIA 4Cs of Diamond Quality

GIA 4Cs of Diamond Quality — Fri, 16 Mar 2018 18:26:00 +0000

Hi Krista: Not all blemishes are the result of damage. If your diamond has a grading report with a plot diagram, you can check to see if a blemish, or other clarity characteristic, was present when the diamond was graded. We do not comment on what’s visible in a photograph because the diamond needs to be physically examined. We suggest asking a gemologist or your jeweler to look at the diamond.

Comment on GIA Diamond Grading Scales: The Universal Measure of Quality by trieu le

trieu le — Thu, 15 Mar 2018 20:02:00 +0000

hi , i have a diamond ring 1ct certificate GIA , but i lot the certificate i have GIA report number 1119683039, i want get new certificate for this diamond, what should I do?
can you answer me to my email
trieule87@yahoo.com.au
thank you so much

Comment on Diamond Inclusions Defined by Krista T

Krista T — Mon, 12 Mar 2018 18:40:00 +0000

https://uploads.disquscdn.com/images/c2740ad62df55b1169353457004f827a8798edd505572dc6f989739cced742f0.png https://uploads.disquscdn.com/images/d6ef17ef2d693fd98075a8c681bbca066e4beb9e2a19dd531ce8f0a395ea48e5.png

Comment on Diamond Inclusions Defined by Krista T

Krista T — Mon, 12 Mar 2018 18:31:00 +0000

Hi there. Would you be able to tell me which kind of blemish this is? Bottom right ish, very noticeable. I got the ring sized and they polished it as well and so the sparkles was all I noticed until a week later when I realize there’s a big blemish. The picture in the low light was taken just 3 hours after getting back from the jeweler. Could I really have done this much damage? That was my first time wearing the ring and I was so conscious of wearing it that I was extra careful with my hands. I don’t think there was any hard impact which would have prompt me to examine the ring earlier. Please help

Comment on Zultanite – A Relatively New, Extremely Rare Gemstone Popular in Jewelry Design by GIA 4Cs of Diamond Quality

GIA 4Cs of Diamond Quality — Mon, 12 Feb 2018 20:33:00 +0000

Hi Tasya: o remain neutral, GIA does not provide referrals, recommendations or endorsements. If you do an internet search on zultanite or diaspore you should be able find companies selling this product.

Comment on How Diamonds Shape Up by GIA 4Cs of Diamond Quality

GIA 4Cs of Diamond Quality — Mon, 12 Feb 2018 20:32:00 +0000

Hi Adi: We’d like to answer your question. Can you please tell us what SEM and CSSC are referring to? Thank you.