Difference between revisions of "Citrine"

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m (Conversion of 900 Degrees Farenheit to 482.2 Degrees Celsius as temperature convention . Source: "FAQ's for The Gemology Project.)
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[[Image:Citrine.JPG|left|framed|Citrine]]<br clear="left" />
  
Citrine is a yellow or golden variety of [[quartz]]. Most citrine available today is heat-treated [[amethyst]]. When amethyst is heated to about 900 degrees Fahrenheit, it alters to to a golden tone. Citrine has been credited with curing urinary tract infections, jaundice and kidney ailments. This is obviously a color association.
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Citrine is a yellow or golden variety of [[quartz]]. Most citrine available today is heat-treated [[amethyst]]. When amethyst is heated to about 482.2 degrees Celsius, it alters to to a golden tone. Citrine has been credited with curing urinary tract infections, jaundice and kidney ailments. This is obviously a color association.

Revision as of 20:21, 14 January 2007

Citrine
Chemical composition Silicon dioxide SiO2
Crystal system Trigonal
Habit Prismatic
Cleavage Poor
Fracture Conchoidal
Hardness 7
Optic nature Uniaxial +
Refractive index 1.544 - 1.553
Birefringence 0.009
Dispersion Low, 0.013
Specific gravity 2.63 - 2.65
Lustre Vitreous
Pleochroism Weak to distinct
Citrine

Citrine is a yellow or golden variety of quartz. Most citrine available today is heat-treated amethyst. When amethyst is heated to about 482.2 degrees Celsius, it alters to to a golden tone. Citrine has been credited with curing urinary tract infections, jaundice and kidney ailments. This is obviously a color association.