| General Information |
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| A variety or type of: | Microcline, which is a variety of Feldspar |
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| Other Names/Trade Names: | |
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| Chemical Formula | Walter Schumann, Gemstones of the world (2001) |
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| Amazonite Treatments |
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Amazonite – colour is lost on heating to over 300°C and can be restored by irradiation if heating was insufficient (500°C) to cause water loss.
Often dyed (uniform color), impregnated with wax or coated with plastic (scratch test, hot point test) - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 8 |
| Physical Properties of Amazonite |
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| Mohs Hardness | 6 to 6.5Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Specific Gravity | 2.55 to 2.57Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Tenacity | BrittleWalter Schumann, Gemstones of the world (2001) |
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| Cleavage Quality | PerfectMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Fracture | Uneven,ConchoidalMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Refractive Index | 1.522 to 1.530Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Optical Character | Biaxial/-Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Birefringence | 0.008 to 0.010Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references |
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| Pleochroism | WeakMichael O’Donoghue, Gems, Sixth Edition (2006) |
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| Dispersion |
| ( ! ) Fatal error: Uncaught mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_uca1400_ai_ci,COERCIBLE) for operation '=' in /big/www/gemdat/gemshow_class.php on line 690 |
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| ( ! ) mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_uca1400_ai_ci,COERCIBLE) for operation '=' in /big/www/gemdat/gemshow_class.php on line 690 |
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| Call Stack |
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| # | Time | Memory | Function | Location |
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| 1 | 0.0007 | 360360 | {main}( ) | .../gshow.php:0 |
| 2 | 0.3697 | 817608 | gemshow_class->do_optical( ) | .../gshow.php:151 |
| 3 | 0.3842 | 834144 | gemshow_class->showblock( $txt = 'DISPERS-MIN' ) | .../gemshow_class.php:1469 |
| 4 | 0.3843 | 851280 | gemshow_class->showdata( $dataname = 'DISPERS-MIN' ) | .../gemshow_class.php:505 |
| 5 | 0.3843 | 851760 | query( $query = 'select * from mineralproperties,mineralpropertytypes where \r\n\t\t\t\t\tmp_mpt_id=mpt_id and mpt_code=\'DISPERS-MAX\' and \r\n\t\t\t\t\tmp_min_id=\'184\' and mp_deleted=0 and\r\n\t\t\t\t\tmp_reference=\'Gems, Sixth Edition\' and\r\n\t\t\t\t\tmp_referenceauthor=\'Michael O’Donoghue\' and\r\n\t\t\t\t\tmp_referenceyear=\'2006\' and\r\n\t\t\t\t\tmp_referencepublisher=\'Elsevier\' and\r\n\t\t\t\t\tmp_referenceperiodical=\'\'' ) | .../gemshow_class.php:690 |
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