.30 cts 5x3 mm Precious Topaz 1346D

Product Details

  • .30 cts 5x3 mm Precious Topaz 1346D
  • 1346D
  • Topaz
  • $150.00 inc. tax

  • Units in Stock: 1

.30 cts 5x3 mm Precious Topaz 1346D Summary

.30 cts 5x3 mm Precious Topaz 1346D

click here to see all faceted topaz
Certified
100% real not man made but genuine from the earth gemstone.
100% Genuine and natural no treatment.
100% money back if not happy.


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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