The revised list of 24 alexandrites above particularly in terms of PPC values shows that the market ranking for alexandrites based on origin - Russia ...

The revised list of above alexandrites arranged in descending order of price-per-carat values :- 1) 21.41-carat, cushion- cut alexandrite of Russian ...

Incorporating all the alexandrites highlighted so far in the list of whole stone prices and price-per-carat values achieved, we can have a better and ...

As we have already pointed out premium values are attached to alexandrites of Russian origin, if one can prove the origin of the stone without any do...

Thanks Mike for the beautiful images of alexandrites from the national collection. Your contribution has served to enrich our discussion. Hoping for ...

The first alexandrites discovered in the Ural Mountains in Russia in 1830 are of the finest quality displaying vivid hues and dramatic color change. T...

Thanks Peter for your updates. I think we can now incorporate these four alexandrites in our list given above and produce a revised list both for whol...

The above analysis shows that both in terms of whole stone prices and price-per-carat values, there is a market ranking for alexandrites based on orig...

Three important sources of alexandrites in the world have emerged from the above discussion - Russia, Ceylon/Sri Lanka and Brazil. The six stones high...

Any alexandrite over 10 carats in weight is beyond rare. The alexandrite highlighted by gemlite is more than double this limit, which further enhances...

Thanks rashid for your very intelligent question on the possibility of gem-testing laboratories branding any light-red to dark-pink corundum as "Pink ...

Thanks gemlite for your valuable contribution. The extensive account of rubies found in Sri Lanka in the 14th-century, by Ibn Batuta, establishes the...

An examination of the above excerpt by even the most casual reader shows clearly that interwoven into the tales and fables, are real geographical fact...

Thanks AnitaP for your contribution on the ancient history of Ceylon as an important source of natural pearls and gemstones such as rubies, sapphires ...

Thanks Sunil for enlightening us on the use of the word "Ruby" in ancient and modern times. Ruby and Sapphire were considered as different minerals in...