Aquamarine

Blue topaz: trichroism (weak to none): colorless - (pinkish) - bluish; Chelsea: may appear yellowish-greenish, grayish, bluish, pinkish. Synthetic spinel and synthetic quartz: Chelsea: pinkish to red - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 6 Synthetic aquamarine can be produced but is uneconomical. - Walter Schumann, Gemstones of the world, 2001, p 90 7.5 to 8Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 2.66 to 2.80Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references 1.570 to 1.592Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Uniaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references 0.005 to 0.009Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references Dichroism: colorless to greenish bluish - blue to sky blue. Greenish-blue stones - distinct: yellowish-greenish - blue-greenHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) 0.014Michael O?Donoghue, Gems, Sixth Edition (2006) Blue, greenish-blueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Greenish blueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Light blue, Fe2+ in the channels of the structure. Darker blue, Fe2+-O-Fe3+ intervalence charge transfer.W. William Hanneman, Pragmatic Spectroscopy For Gemologists (2011) InertHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) HexagonalHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) Long-prismatic habit, occasional vertical striations and growth and etch figures on the prism faces.E.Ya. Kievlenko, Geology of gems (2003) Aquamarine information at mindat.org Afghanistan  Blauwet and Muhammad (2004) Glas (2002) Blauwet et al. (1997) Glas (2002) Glas (2002) Brazil  Couto (2000) Menezes (2005) Cassedanne and Alves (1994) Kievlenko E.Ya., Geology of gems, 2003, p. 113 Cassedanne and Alves (1994) Cassedanne and Alves (1994) Menezes (2005) Cassedanne and Alves (1994) E.Ya. Kievlenko, Geology of gems, 2003, p. 113 Kievlenko E.Ya., Geology of gems, 2003, p. 113 [var: Blue Beryl (Maxixe)] Kievlenko E.Ya., Geology of gems, 2003, p. 113 Cassedanne and Alves (1994) Cassedanne and Alves (1994) Viana et al. (2002) Cassedanne and Alves (1994) Laurs (2004) Menezes (2005) Kievlenko E.Ya., Geology of gems, 2003, p. 113 R. Wegner and O. Moura (2000) Bhaskara-Rao (2002) Canada  Groat (2005), Wilson (2007) Groat (2005), Turner et al. (2007) China  Liu (2005) Tang et al. (2004), Liu (2005), Li (2009) Marshall et al. (2009) Finland  Lyckberg (2004, 2005), Wise (2005) India  Boehm (2000), Michelou (2006) Kazakhstan  Spiridonov (1998) Kenya  Cairncross (2005) MadagascarE.Ya. Kievlenko ( 2003) Geology of gems, p. 112 Laurs and Quinn (2002) Pezzotta (2001), Danet |(2007) E.Ya. Kievlenko, Geology of gems, 2003, p. 112 Mozambique  Schafer and Arlt (2000), Schappmann (2005), Cairncross (2005) Schafer and Arlt (2000), Schappmann (2005), Cairncross (2005) Schafer and Arlt (2000), Schappmann (2005), Cairncross (2005) Myanmar  Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Kyi et al. (2005), Hlaing (2009) Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Ted Themelis (2008) Gems & mines of Mogok Kyi et al. (2005) Kyi et al. (2005) Namibia  Jahn (2000), Jahn and Bahmann (2000), Glas (2002) Jahn (2000), Jahn and Bahmann (2000), Glas (2002), Laurs (2002) Jahn (2000), Jahn and Bahmann (2000) Cairncross et al (1998) Nepal  Nigeria  Kammerling et al. (1995) J. Micheou (2009) Lind et al. (1986) Kammerling et al. (1995) Pakistan  Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Hammer and Muhammad (2004) Hammer (2003, 2004) Hammer (2003, 2004) Hammer and Muhammad (2004) Hammer and Muhammad (2004) Blauwet (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Blauwet and Muhammad (2004) Khan (1986) Russia  P. Lyckberg (2009) P. Lyckberg (2005) Hochleitner (2005) E.Ya. Kievlenko, Geology of gems, 2003, p. 116 Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 116 P. Lyckberg (2005) Sri Lanka  Dissanayake et al. (2000) Econ Geol (1981) 76:733-738 Tajikistan  Skrigitil (1996) Ukraine  Koivula et al. (1993), Lyckberg (2005) USA  Mauthner (2008) Sinkankas (1997) Potucek (2005) Jarnot (2005) Sinkankas (1997) Potucek (2005) Wise (2005) Wise (2005) U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. Vietnam  Michelou (2006) Zambia  Mambwe and Sikatali (1994) Milisenda et al. (2000), Carranza et al. (2005) Zimbabwe  Cairncross (2005) Milisenda et al. (2000), Cairncross (2005) Milisenda et al. (2000), Cairncross (2005)