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Lot 20
RUBY AND DIAMOND RING
Closed11 May 2022
Price Realised
CHF 1,134,000
More Information
Specialist note
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.