Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)
UnevenWalter Schumann, Gemstones of the world (2001) More from other references, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Uneven
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references