I was able to locate the Christie's Lot Finder pertaining to the sale stumbled upon by Peter. The pair of magnificent Golconda diamonds referred to by...

Thanks Peter, for your post. Your contribution is timely and relevant to our discussion.

Welcome aboard russellmark. We are happy to have you in our forums and are eagerly looking forward to your contributions.

Thanks Joan for making this important observation. However, the stringent Gubelin criteria for clarity, color, transparency, cut and shape, will autom...

The criteria laid down by the Gubelin Gem Lab based in Lucerne, Switzerland, to characterize a diamond as Golconda is more stringent than other author...

According to gemologist Richard W. Wise for a Type IIa, D-color diamond to be characterized as a Golconda diamond, it should possess at least three v...

Thanks for your comments Mr. Richard Wise, on our webpage titled the Golconda-D diamond, and the question raised by you about its grading and fluoresc...

Thanks for your contribution Norma. You are absolutely correct. The Queen never gifted the Vladimir Tiara to Princess Diana after her marriage to Prin...

In our account on the "American Golden Topaz" under the main heading "History of the American Golden Topaz" and sub-heading "The Processing of the Ame...

Welcome to our forums. Your contribution as a jewelry designer would be vital for the success of this forum. You can upload pictures and descriptions ...

The El-Dorado Topaz, owned by the Programa Royal Collections based in Madrid, Spain, weighed a massive 37 kg when first unearthed in 1984, in Minas Ge...

Thanks for sharing your experience of handling a rare Nautilus pearl with our members. Your description of the pearl, such as its white color, translu...

Certainly Mike, this is undoubtedly the prime factor that motivates the pearl enthusiasts of the Persian Gulf to invest heavily in acquiring such rar...