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typically arranged in swirling or banded designs
Grade =Good to Very Good Grade
Size = 136 - 164 mm
A Large A Grade Beautifully Polished Septerye Sauvage "Dragons Egg" Geode with a Black Calcite Crystalline Centre
Al₇BO₃(SiO₄)₃O₃
Polished Dumortierite Standing Display Pieces x 6 From Madagascar Small Tray typically arranged in swirling orA NOTE FROM NICK A tray of 6 expertly polished highly selected rare Dumortierite standing display pieces with warm dark blue and white colour. This material is super rare; I have only seen this twice in over 30 years. PRODUCT DESCRIPTION Dumortierite from Madagascar Dumortierite from Madagascar, a fibrous aluminium borosilicate mineral known for its blue hues, ranging from sky blue to deep sapphire, with occasional violet or green tinges. Sourced
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