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Dravite 0.97 ct.



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Dravite 0.97 ct.

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is a complex Sodium Magnesium Iron Boro-Aluminium Silicate with formulna NaMg3(Al,Fe)6Si6O18(BO3)3(OH)4 and hardness of 7-7.5. It belong to the tourmaline group, while the two other species Schorl is iron rich, and Elbaite ,lithium rich ,with many colors. Is not very appealing and not so common; the colors are brown in all his tones. From Brazil. Size:7.6x5.2x3.2 mm. Weight:0.97 ct. CODE#3168