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103 Carat Extremely Rare Grandidierite Natural Stones - Uncut Grandidierite Stones. The faceting will be translucent or opaque. Key Features Stone Name: ____ Rough Grandidierite Total Weight: ____ 103 carats Total Pieces: ____ 23 Sizes: ______ 1.60 to 11.70 carats per piece Average Size: ____ 4.4 carats Color: ____ Sea Green to Sea Blue Clarity: ___ translucent to semi transparent Treatment: ____ No Origin: ____ Madagascar Discover the World's Rarest Blue-Green Gemstone Grandidierite is one of the most rare gemstones on Earth. Gem grade stone is hardly to get. Why Grandidierite is So Exceptionally Rare: Extreme Scarcity: Gradnidierite is found in only one location worldwide - the remote regions of Madagascar - making it rarer than diamonds, emeralds, or rubies Geological Marvel: Formed under incredibly specific conditions over millions of years, requiring the perfect combination of boron, aluminum, and magnesium in metamorphic environments Limited Discovery: First discovered in 1902 and named after French explorer Alfred Grandidier, gem-quality specimens remain virtually impossible to find Collector's Holy Grail: Most grandidierite exists only in museums or private collections of serious gem connoisseurs What Makes This Stone Extraordinary: This 103-carat rough grandidierite displays the stone's signature pleochroism - appearing blue-green from one angle and colorless from another. The mesmerizing optical phenomenon occurs due to its unique crystal structure, creating an almost magical color-changing effect that captivates viewers. Perfect for faceting or cabbing, this exceptional rough material offers the rare opportunity to create a truly one-of-a-kind finished gemstone. Whether you're a lapidary artist, collector, or investor, this grandidierite represents both artistic potential and significant rarity value. Own a piece of the impossible - grandidierite so rare that most gemologists will never see it in person.
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🇺🇸 Ship from USA · On Agora since 2026
$230.00