2.5 cts 11x8x6 MM African Amethyst loose faceted 1799C

Product Details

  • 2.5 cts 11x8x6 MM African Amethyst loose faceted 1799C
  • 1799C
  • amethyst
  • $50.00 inc. tax

  • Units in Stock: 1

2.5 cts 11x8x6 MM African Amethyst loose faceted 1799C Summary

2.5 cts 11x8x6 MM African Amethyst loose faceted 1799C

 

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Certified

100% real not man made but genuine from the earth gemstone.

100% Genuine and natural no treatment.

100% money back if not happy.  

 

Mohs hardness 7

Refractive index 1.544-1.553

Critical angle 40°

Specific gravity 2.63-2.65

Cleavage None

Fracture Conchoidal, brittle.

Dispersion Medium (.013)

Heat sensitivity Low

Pleochroism Amethyst very weak (purple to grayish purple); Natural citrine weak (yellow to light-yellow); Prasiolite very weak (light-green to paler green); Rock crystal colorless, no dichroism; Rose quartz weak (pink to paler pink); Natural dark smoky definite (brown to reddish-brown).

Birefringence (double refraction) Weak (.009)

Crystal structure Hexagonal

Cutting Quartz cuts easily.  Pre-polishing with 1200 Nubond or 3000 standard lap will make polishing much quicker and more enjoyable.

Polishing Cerium oxide on most common polishing laps.

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