Imperial or "Precious Topaz"
Topaz comes in a varity of colors, both natural and heat treated. Natural colors range from white to yellow-brown tones with some hint of pink. Every so often a natural blue is found. In areas of the earth where there was extreme heat during the cooling process as the Topaz was formed millions of years ago, there will be shades of blue and even some pink and orange.
The pink to orange are the most valuable.
They have been named Imperial Topaz and are priced at over 10 times the cost of common Topaz.
Topaz
Hardness 8
R.I. 1.619 - 1.627
S.G. 3.53(+/- .04)
     Fire Agate
Aquamarine
      Emerald
      Heliodor
Morganite
Ruby
      Star Ruby
      Sapphire
      Star Sapphire
     Almandite
      Almondine
      Hessonite
      Rhodolite
      Tangerine
      Tsavorite
    Black Opal
     Carved Opal
     Fire Opal
     Precious Opal
     Amethyst
     Citrine
     Green
     Rose
     White






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Two Specemins
Imperial Topaz
Orthorhombic System
# C41B
Imperial Topaz
15x12 axis
10mm. tall
14.4 ct. weight

# C41A
Imperial Topaz
6.5 x 6.5 axis
13mm. tall
7.9 ct. weight

One Specemin
Imperial Topaz
Orthorhombic System
Cathedral Type
# C42
Imperial Topaz
10 x 8 axis
18mm. tall
13.80 ct. weight

"Phantoms and Rainbows"
"flattened rectangle"