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...

List of Burma blue sapphires considered so far, arranged in descending order of whole stone prices 1) 114.73-carat, oval-cut, Burma blue sapphire tha...

Analysis of the list of ten Chrysoberyl cat's-eyes arranged in descending order of estimated values and price-per-carat values, show that the color o...

We have considered 10 Chrysoberyl cat's-eyes in our discussion, and most of them had appeared at public auctions conducted by leading auction houses. ...

I am still working on the detail valuation of your gemstone. I you are happy with the FREE service we do in our forums: please invite all your friend...

Details of some Chrysoberyl cat's-eyes that appeared at the Tiancheng International Jewelry and Jadeite Spring and Autumn Auctions 2014, and Sotheby's...

Hi ridhaanya, I have studied the photograph of the chrysoberyl catseye you have uploaded and am impressed by the color, clarity and chatoyancy (catsey...

The price list for gem testing by some renowned gem testing laboratories are given below ;-1) American Gemological Laboratories (AGL) AGL- Mounted Al...

As a follow-up to my observations above, I personally feel that the gemstone set in your ring is actually an alexandrite of either Brazilian or Sri La...

Thanks Lizc for the trust placed on our forums. The thread on Alexandrites started on May 21st 2014 by Gemlite generated an extensive discussion, citi...

Yes indeed Peter ! Some of the famous non-nacreous blister pearls produced by the Giant Clam Tridacna gigas are the 6.1-kg "Pearl of Allah," 2.27-kg "...

Welcome to our forums Asiboy ! Thanks for highlighting the discovery of a fossilized Giant Clam Shell high up in the mountains of San Fernando in the ...