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Details
AN IMPORTANT UNMOUNTED ALEXANDRITE
The oval-shaped alexandrite weighing 24.82 carats
With report no. 0205439 dated 7 June 2002 from the Gübelin Gem Lab stating that the alexandrite is of Sri Lankan origin
Accompanied by an appendix stating 'The 24.82 ct natural alexandrite described in the accompanying GGL Report possesses a very high degree of transparency, combined with a strong colour-change effect. The colour changes from green when viewed in daylight to purple upon exposure to incandescent light.
The combination of high clarity with an exceptionally clean and strong colour-change effect in a Sri Lankan alexandrite exceeding 20 ct is truly rare'
Report no. CS36015 dated 19 December 2002 from the American Gemological Laboratories stating that the alexandrite is of Sri Lankan origin, no gemological evidence of enhancements/treatments present
Accompanied by a letter stating 'American Gemological Laboratories has completed a thorough analysis of the 24.831 carat Alexandrite Chrysoberyl documented in AGL report no. CS36015. This examination includes a comparative study of the various quality parameters that define a gemstone. A summary quality assessment statement designated a Total Quality Integration Rating classifies this stone as Exceptional to Excellent. This rating category is reserved for a limited number of rare gemstones that exhibit all the individual elements that define the highest level of a category.
Augmenting the importance of this material is the fact that this gem does not exhibit any gemological evidence of enhancements or treatments. This lack of alteration, in addititon to the combination of unusual quality elements further accentuates the rarity and desirability of this exceptional Alexandrite'
The oval-shaped alexandrite weighing 24.82 carats
With report no. 0205439 dated 7 June 2002 from the Gübelin Gem Lab stating that the alexandrite is of Sri Lankan origin
Accompanied by an appendix stating 'The 24.82 ct natural alexandrite described in the accompanying GGL Report possesses a very high degree of transparency, combined with a strong colour-change effect. The colour changes from green when viewed in daylight to purple upon exposure to incandescent light.
The combination of high clarity with an exceptionally clean and strong colour-change effect in a Sri Lankan alexandrite exceeding 20 ct is truly rare'
Report no. CS36015 dated 19 December 2002 from the American Gemological Laboratories stating that the alexandrite is of Sri Lankan origin, no gemological evidence of enhancements/treatments present
Accompanied by a letter stating 'American Gemological Laboratories has completed a thorough analysis of the 24.831 carat Alexandrite Chrysoberyl documented in AGL report no. CS36015. This examination includes a comparative study of the various quality parameters that define a gemstone. A summary quality assessment statement designated a Total Quality Integration Rating classifies this stone as Exceptional to Excellent. This rating category is reserved for a limited number of rare gemstones that exhibit all the individual elements that define the highest level of a category.
Augmenting the importance of this material is the fact that this gem does not exhibit any gemological evidence of enhancements or treatments. This lack of alteration, in addititon to the combination of unusual quality elements further accentuates the rarity and desirability of this exceptional Alexandrite'
Further details
On its discovery in the Ural Mountains circa 1830, Alexandrite was known as the Christmas Stone due to its special optical effect of colour change, glowing a rich bluish-green in sunlight and turning a deep raspberry red colour in incandescent or candle light. The discovery of the gem is said to have coincided with the twelfth birthday of the young Tzarevitch, Alexander, and the fact that the colours of the Tsarist Court were also red and green were seen as very favourable signs. It was only natural therefore for the gem to be renamed Alexandrite and it soon became a favourite among the Russian nobility.
By the early 1900s the original source in the Ural Mountains was exhausted. It was only in the late 1980s that new sources of these stones were discovered in Brazil and later in Sri Lanka and Zimbabwe. Due to its size, pronounced colour change and exceptional clarity, lot 579 is truly a rare example of these phenomenal gems.
By the early 1900s the original source in the Ural Mountains was exhausted. It was only in the late 1980s that new sources of these stones were discovered in Brazil and later in Sri Lanka and Zimbabwe. Due to its size, pronounced colour change and exceptional clarity, lot 579 is truly a rare example of these phenomenal gems.