8 cts 17x10x7mm Loose faceted Imperial Topaz for sale s955

Product Details

  • 8 cts 17x10x7mm Loose faceted Imperial Topaz for sale s955
  • s955
  • Topaz
  • $1,600.00 inc. tax

  • Units in Stock: 1

8 cts 17x10x7mm Loose faceted Imperial Topaz for sale s955 Summary

Imperial  Topaz loose cut faceted 8 cts  17x10x7mm s955

Certified
100% real not man made but genuine from the earth gemstone.
100% Genuine and natural no treatment.
100% money back if not happy. 
 
 

 We sell rough and cut gemstones, offering a wide range of rough gemstones for specimen-cabbing-facet and beautiful cut stones ready for your mount..Either for a new piece of jewelry or replacing a stone in an existing piece of jewelry.We offer thousands of lots, all with individual photos, what you see in the photo is what you will receive. Tommysrocks, an internet only business since 2002, giving our internet customers 100% of our attention. 

CLARITY SCALE
IF VERY HIGH QUALITY & FREE FROM INCLUSIONS.
VVS HIGH QUALITY WITH VERY SLIGHT INCLUSIONS.
VVS1 HIGH QUALITY WITH SLIGHT  INCLUSION.
VS FINE QUALITY WITH  INCLUSION SLIGHTLY VISIBLE TO THE NAKED EYE.
VS1 FINE QUALITY WITH INCLUSION VISIBLE TO THE NAKED EYE.
SI GOOD QUALITY WITH  INCLUSIONS VISIBLE TO THE NAKED EYE.
SI1 INCLUSIONS BECOMING PROMINENT TO THE EYE.
I INCLUDED.

THIS GEMSTONE IS GRADED: I F

 

Topaz (aluminum fluor-silicate)

Color: Blue, colorless, pink, orange, red, champagne, sherry-brown, brown and yellow.

Names/Colors:

Sky Blue - Light blue

Swiss Blue - Medium blue

London Blue - Dark blue, generally with steely undertone.

Imperial - Orange, pink and red.

Mohs hardness: 8

Refractive index: 1.61-1.638

Critical angle: 38°

Specific gravity: 3.53-3.56

Cleavage: Very perfect in one direction.

Fracture: Conchoidal, uneven.

Dispersion: Medium (.014)

Heat sensitivity: None

Pleochroism: Dichroic – Blue: weak (light-blue to pinkish or colorless); Brown: definite (stronger yellowish cast); Green: definite (Pale-green to paler or colorless); Pink: definite (pink to pale pink or colorless); Red: strong (deep red to pinkish red); Yellow: definite (lighter to deeper yellow).

Birefringence (double refraction): Weak (.008-.01)

Crystal structure: Orthorhombic

Treatments: Blues are irradiated and heated.

Cutting: Orient the stone 7 to 10 degrees away from the cleavage plane.

Polishing: Alumina on most common polishing laps or 50,000 diamond on tin/lead or ceramic lap.

 

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