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 » RockyTalky
»  » Pls educate me on certs. I thought all diamonds were certified.
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Pls educate me on certs. I thought all diamonds were certified. |
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| P: 8/6/2008 5:44:59 PM | |
goodys4me Rough Rock Total Posts: 19 Last Post: 8/10/2009 Member Since: 8/5/2008 |
I've been doing my due diligence searching for that diamond that will knock my socks off. I've been to Tiffany & Co., 47th Street - NYC, a couple of local jewelers, Whiteflash, GOG, etc. I visited Michael's Jewelers today to take a look at the Hearts on Fire stones. At the same time, I was looking at some non-branded stones and came across one that I thought was beautiful. Round, 1.75 ct, VS2/D, but that's all I know & I wanted more info. I asked the salesperson if I could see the cert and she said they don't keep them on hand. I asked her if she could get it for me & she was hesitant. I asked her if it was AGS or GIA certified, and she said many of their diamonds are certified by Michael's. This is where I need some education. I know that Tiffany has their own in-house lab and doesn't use GIA or AGS, but I thought it was because they were Tiffany. I didn't know that a mall-store like Michael's also had their own in-house lab. I thought that most diamonds, at least those being sold in stores, would all come with some kind of cert from an independent lab. After pushing her just a little bit, she said she was able to confirm that this stone did come with a GIA cert, but she'd have to have them fax it to her & I was fine with that. She just called to say it would be faxed tomorrow & I can come into the store to take a look at it & get whatever info I need off of it. But, how does diamond rating work?
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| Posted: 8/6/2008 5:44:59 PM | |
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There are 3 replies to this message. There are 3 replies on this page. |
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| P: 8/6/2008 6:34:11 PM | |
Regular Guy Ideal Rock Total Posts: 5,318 Last Post: 11/24/2009 Member Since: 7/7/2004 |
The tutorial's pretty good on this...
Ira (Ruffles have Ridges) Z. |
| Posted: 8/6/2008 6:34:11 PM | |
| P: 8/7/2008 1:20:06 AM | |
Skippy123 Ideal Rock Total Posts: 19,828 Last Post: 11/23/2009 Member Since: 11/24/2006 |
What shape of stone are you looking at? If it is a round get the pavilion, crown angle, depth and table %; this tool should help you weed out bad performers. http://www.pricescope.com/cutadviser.asp Skippy  "The only things that stand between a person and what they want in life are the will to try it, and the faith to believe it's possible" Rich Devos |
| Posted: 8/7/2008 1:20:06 AM | |
| P: 8/7/2008 3:51:42 AM | |
Garry H (Cut Nut) Ideal Rock Total Posts: 11,582 Last Post: 11/24/2009 Member Since: 8/16/2000 |
There is an Indian manufacturer who refuses to have anything to do with grading labs; their in house lab is head and shoulders above any other so called independant lab. Only one lab, GCAL, states they certify diamonds - the others mainly state they grade them - like -dont sue us if we get it wrong. And they do. We her did a study a few years ago and none of 16 stones got the same grade from 3 labs we sent them to. It is under the Reviews up the top tool bar. Idex did a study with about 10 stones a few months back to most of the labs - in my spare time i will tabulate it and post it here if they give me permission. They did about 7 labs and had dissatrous results of 4 colour grades difference on some stones!!!! So if a store has a real reputation to uphold, there is nothing wrong with inhouse grading. but many stones that do not go to labs - well - there is a reason. Garry Holloway FGAA DipDT |
| Posted: 8/7/2008 3:51:42 AM | |
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