The Technical World Magazine, Volume 7Technical World Company, 1907 |
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Page 388
... tourmalines in a suite of colors that can be claimed by no other gem . Occasionally a sap- phire , or a ruby with flame ... tourmaline , hyacinth , beryl and topaz are found here in brilliant perfec- tion , these gems are also found in ...
... tourmalines in a suite of colors that can be claimed by no other gem . Occasionally a sap- phire , or a ruby with flame ... tourmaline , hyacinth , beryl and topaz are found here in brilliant perfec- tion , these gems are also found in ...
Page 389
... tourmalines on claims owned by Mr. Frank A. Sal- mons , a pocket of kunsite was located . Its unusual colors , its ... tourmaline crystals also . The hardness of kunsite is nearly as great as that of the diamond . It is of double re ...
... tourmalines on claims owned by Mr. Frank A. Sal- mons , a pocket of kunsite was located . Its unusual colors , its ... tourmaline crystals also . The hardness of kunsite is nearly as great as that of the diamond . It is of double re ...
Page 390
... tourmaline . The tourmalines of San Diego County are re- markable for their color groupings , as they are also remark- able for their hardness and brilliancy . These latter properties are not shared in by tour- malines from other lo ...
... tourmaline . The tourmalines of San Diego County are re- markable for their color groupings , as they are also remark- able for their hardness and brilliancy . These latter properties are not shared in by tour- malines from other lo ...
Page 392
... tourmaline is found in iso- lated crystals with flawless prisms and terminations . Tourmaline is quite a complex mineral , no less than one dozen ele- ments entering into its composition . It is this great variety of chem- icals ...
... tourmaline is found in iso- lated crystals with flawless prisms and terminations . Tourmaline is quite a complex mineral , no less than one dozen ele- ments entering into its composition . It is this great variety of chem- icals ...
Page 393
TOURMALINE CRYSTAL IN QUARTZ FORMATION . CUTTING AND POLISHING GARNETS . MINING FOR GEMS AT DOS. of polarizing light , and because of this property is used in analyzing other min- erals . Hyacinth , another brilliant gem , was discovered ...
TOURMALINE CRYSTAL IN QUARTZ FORMATION . CUTTING AND POLISHING GARNETS . MINING FOR GEMS AT DOS. of polarizing light , and because of this property is used in analyzing other min- erals . Hyacinth , another brilliant gem , was discovered ...
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