Rare Dumortierite Pair of Obelisks
Brazil
Dumortierite was first described in 1881 in the Rhône-Alps of France and was named for the French paleontologist Eugene Dumortier (1803-1873)--it is known as the "blue denim stone." . Typically occuring in high temperature aluminium rich metamorphic rocks, those resulting from contact metamorphism and also in boron rich pegmatites--it is boron that is the cause of the unique blue color.
Sometimes mistaken for sodalite or for lapis lazuli, two of its famous occurrences are in Arizona and California. However, the present and best source for quality material is in Brazil. A highly decorative pair of obelisks from an unusual, sought-after material. Height 28in
Dumortierite was first described in 1881 in the Rhône-Alps of France and was named for the French paleontologist Eugene Dumortier (1803-1873)--it is known as the "blue denim stone." . Typically occuring in high temperature aluminium rich metamorphic rocks, those resulting from contact metamorphism and also in boron rich pegmatites--it is boron that is the cause of the unique blue color.
Sometimes mistaken for sodalite or for lapis lazuli, two of its famous occurrences are in Arizona and California. However, the present and best source for quality material is in Brazil. A highly decorative pair of obelisks from an unusual, sought-after material. Height 28in
Sold for
US$ 1,500
inc. premium
Category: Natural History
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Claudia Florian
Bonhams
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Natural History