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Ch. 17: Synthetic and Imitation Gems Page of 96 Index Text size:minus plus Restore normal size   Mail page  Print this page
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INDEX.
PAC4E.
Abbas Mirza diamond ..................    75
Adamantine spar .......................    29
Agate .......................................    60
,, artificial staining of............    61
,, banded ..........................    60
,, brecciated .......................    60
,, clouded ...........................    60
„ composition of.................    60
„ fantastic forms of.............     61
,, fortification ......... ...........    CO
,, historical...........................    61
„ jasper .............................    60
„ mode of cutting..................    61
,, moss.................................    60
,, New South Wales localities..    62
,, onyx ..............................    60
,, opal.................................    50
,, ribbon..............................    60
,, uses of.............................    60
,, where cut and polished ......    61
,, where found .....................    61
,, wood .............................    61
,, zone................................    60
Alexandrite ..............................    44
„         dichroism of...............    44
,,         where found..............    44
Almandine or precious garnet.........    35
,, ruby—violet spinel......    31
Amazon stone .............................    68
,,            colour of..................    68
,,            where found............    68
Amethyst .................................    59
,, alteration of colour by
heating....................    60
,, geological formation......    60
„ historical.....................    59
„ meaning of term .........    59
,, mode of cutting...........    59
„ New South Wales locali­ties ........................    60
,, scarabei .....................    59
,, where found ...............    60
,, value of ....................    59
Andradite .................................    36
Aplome ....................................    36
Aquamarine................................    28
,,         engraved .................    28
„         historical ..................    28
Oriental .................. 19, 25
,,         value of.....................    28
,,         where found...............    28
Artificial gems ..........................    79
ruby ...........................23,79
Ashes-drawer............................    54
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PAGE.
Asteria.......................................    25
,, how cut...........................    26
,, value of...........................    26
Australian rubies, garnets ...........22, 37
Austrian yellow diamond...............    17
Avanturine.................................    67
,,         artificial.....................    67
,,         feldspar.....................    68
,,         where found...............    67
Axinite.....................................    72
„ meaning of term..............    72
Balas ruby—rose-red spinel .........    31
Barklyite...................................    22
Beryl .......................................    27
,, cleavage of........................    27
,, colours of ........................    27
„ commercial value of............    28
„ composition of ..................    27
,, crystalline system of ........    27
,, lustre of...........................    27
,, size of crystals .................. 27, 28
,, specific gravity of...............    27
„ varieties of................. 27,28,29
,, where found .....................    28
Bingera diamonds ........................    13
,, geological forma­tion ..............    13
/,              where found ......     13
Black garnet ..............................    36
Bloodstone ................................    64
Blue beryl ................................ 27, 28
Blue beryl in Crown of England......    28
Blue sapphire.............................    23
Blue tourmaline...........................    53
Bohemian garnet ........................    35
Bone turquois.............................    53
Borneo diamonds .......................    12
Bort or Boort.............................    11
Brazilian diamonds .....................    12
,, emerald .................... ..    53
,, ruby .............................    53
,, sapphire .......................    53
„ topaz ..........................    38
Bristol diamonds .......................    56
Bultfontein Mine, South Africa......    12
Burnt topaz ..............................    38
Cairngorm—brown quartz crystal...    58
Californian diamonds ..................    56
Cameos ....................................    48
Ch. 17: Synthetic and Imitation Gems Page of 96 Index
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