Game Day Glow!!

November

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Citrine and Topaz


Citrine


Citrine is the yellow variety of macrocrystalline quartz that takes its name from citron, the French word for lemon. Citrine is a beautiful, transparent gemstone and one of November's birthstones.

 


Just the facts


Citrine occurs naturally in proximity to amethyst and is a related quartz mineral. Its color is due to small amounts (approximately 40 parts per million) of iron in the crystal structure of quartz.

 

 


 Citrines Include:

Checkerboard-cut 


Citrine

November's Birthstone

Major Sources

Brazil, Madagascar, Mozambique, Tanzania, Uruguay, Zambia

Colors Found

 Shades of Yellow

Family

Quartz: SiO2

Hardness

7

Refractive Index

1.54 - 1.55; Uniaxial (+)

Specific Gravity

2.65

Crystal System

Trigonal

Topaz


The origin of the name topaz generates confusion because some references point to the Sanskrit word tapaz, meaning "fire," while others believe it is named after Zeberget, an island in the Red Sea that the Greeks called Tapazius, the ancient source of peridot.

 


Just the Facts


Mined from both host rock and alluvial deposits, its unique crystal structure makes topaz a hard and dense gemstone. Because of this, pure colorless topaz has often been mistaken for diamond. Weighing 1.680 karats, the huge Braganza gemstone, mounted into the Portuguese crown jewels, was originally thought to be a diamond-in fact, it's a beautiful clear topaz. 

 


Topaz Include:

Blue, Glacier, Imperial, Mystic


Topaz

November's Birthstone

Major Sources

Brazil, Burma, Mexico, Mozambique, Nigeria, Russia, & Sri Lanka

Colors Found

 Various

Family

Topaz: Al2SiO4(F,OH)2

Hardness

8

Refractive Index

1.60 - 1.64; Biaxial (+)

Specific Gravity

3.49 - 3.57

Crystal System

Orthohombic

 

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