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Lot Essay
THE RUBY
Coloured diamonds put aside, Ruby is the most valuable gemstone of all. True indeed, with a record price per carat of USD 1.2m holding since 2015 where the famous Crimson Flame was sold at Christie’s Geneva. The ruby is the long-standing King of the Gems. The value of perfect rubies has been high for centuries, as Jean Baptiste Tavernier already confessed in the 16th century: “when a ruby exceeds five carats, and is perfect, it is sold for whatever is asked for.”
Beyond its value and its size, a ruby is above all, extremely rare for its formation requires elements that are not common in the Earth’s crust. To form, a ruby will need the hazardous encountering of oxygen and aluminum with an absence of silicon; the second most
abundant element in the Earth’s crust is silicon. In addition to that, to gain a luminous and intense red colour, oxygen and aluminum will need the presence of chromium which is a rare element. Even more, a high percentage of chromium is required to induce the
stone with an intense enough red colour to be called a ruby, and not a pink sapphire!
This extraordinary ruby of 7.14 carats, exhibits all the above mentioned elements needed to beconsidered a true treasure of Nature.
Coloured diamonds put aside, Ruby is the most valuable gemstone of all. True indeed, with a record price per carat of USD 1.2m holding since 2015 where the famous Crimson Flame was sold at Christie’s Geneva. The ruby is the long-standing King of the Gems. The value of perfect rubies has been high for centuries, as Jean Baptiste Tavernier already confessed in the 16th century: “when a ruby exceeds five carats, and is perfect, it is sold for whatever is asked for.”
Beyond its value and its size, a ruby is above all, extremely rare for its formation requires elements that are not common in the Earth’s crust. To form, a ruby will need the hazardous encountering of oxygen and aluminum with an absence of silicon; the second most
abundant element in the Earth’s crust is silicon. In addition to that, to gain a luminous and intense red colour, oxygen and aluminum will need the presence of chromium which is a rare element. Even more, a high percentage of chromium is required to induce the
stone with an intense enough red colour to be called a ruby, and not a pink sapphire!
This extraordinary ruby of 7.14 carats, exhibits all the above mentioned elements needed to beconsidered a true treasure of Nature.