Dumortierite quartz is an unusual quartz that is intergrown with the mineral dumortierite. The inclusions of dumortierite give it a deep blue color that is unique in the world of quartz. The color has similarities to lapis lazuli and sodalite, but with the superior hardness of quartz.
Dumortierite is an aluminum borate silicate mineral that is found is Madagascar, Namibia, Sri Lanka, Mozambique and India.
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