Finally official! Aesthetic trio of sharp, terminated prisms without matrix. Color is deep blue-green, but requires back-lighting (not used in the picture) to really appreciate. From the Ponte do Piauí claim, Piauí valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais. Ref: Rozhdestvenskaya, I. V.; Frank-Kamenetskaya, O. V.; Zolotarev, A. A.; Bronzova, Yu. M.; Bannova, I. I. (2005): Refinement of the crystal structures of three fluorine-bearing elbaites. Crystallography Reports 50, 907-913... "investigation allows the conclusion that fluor-elbaite with the ideal formula Na(Li1.5A11.5)A16(Si6O18)(BO3)3(OH)3F is a new mineral species". Bosi, F., Andreozzi, G.B., Skogby, H., Lussier, A., Ball, N.A. and Hawthorne, F.C. (2011) Fluor-elbaite, IMA 2011-071. CNMNC Newsletter No. 11, December 2011, page 2891; Mineralogical Magazine, 75, 2887-2893.