Please upload images of the rough grey diamond and give more details such as the carat weight of the stone, the mine-of-origin, country-of-origin, a d...

The image of the white rough stone uploaded by Guru is definitely not a diamond. Diamonds are not found in Sri Lanka, even though the country is bless...

Well I don't think it means that. Both SSEF and AGL are internationally recognized gem testing laboratories in the world, with the latest state-of-the...

Thanks Mikegem for your sharp observation. We have discussed this problem extensively on October 22, 2012, in reply to a question raised by one of our...

Welcome back to our forums, Mikegem and gemlite, and thanks for your contributions. Kashmir sapphires are still making headlines at public auctions an...

The same list of Kashmir sapphires above arranged in descending order of price-per-carat (ppc) values :- 1) 17.16-carat, square emerald-cut, Kashmir ...

"Hill's Kashmir Sapphire" has been one of our most popular threads, dealing mainly with all aspects of the rare Kashmir blue sapphires, the benchmark ...

Factor 3 above - Lots set predominantly with diamonds - appears to be the main reason why the lot was assigned a higher estimate and as expected also...

Thanks AnitaP for your intelligent observation, and thanks Joan for your appropriate comment. I totally agree with you Joan on your comment. The blue ...

Of the three RBC diamonds you have mentioned Joan, The Graff Constellation diamond is yet to be sold, the Safiya diamond was sold by Graff in Septembe...

@themonetaryman Thank you very much. Please invite your friends to our forums/website via the following link: ONE CLICK INVITE FROM YAHOO, GMAIL ETC...

Thank you "themonetaryman" for revealing the actual aim of your original question seeking information on D-color RBC diamonds of clarity grade IF/FL a...

Large D_color, Flawless or Internally Flawless round brilliant-cut diamonds are indeed very rare as diamond cutters normally tend to pick a shape/cut ...

Hi ridhaanya, nothing can be said about this sapphire unless the actual weight of the stone is known. You can go to our thread on Significant-Burma-Mo...

The two conditions of lighting to observe a color change in alexandrites are 1) natural daylight/fluorescent light and 2) Incandescent light. The colo...