Andesine market statistics

Andesine

  • Color: Red, Orangey Red, Orange, Yellow, color shift to Green
  • Hardness: 6 - 6.5
  • Refractive index: 1.55 - 1.56
  • Density: 2.66 - 2.70
  • Chemical composition: (Na,Ca)(Si,Al)4O8
  • Crystal structure: triclinic 
  • Origins: Congo, Tibet.

Andesine belongs to the group - plagioclase feldspar. The red color is due to the presence of copper and is rare in gem quality stones. The best specimens are from Congo, with cherry-red and orangey-red crystals the most valuable.

  

The figures are based on Gemval's aggregated valuation statistics for the retail market. Irrelevant, controversial or repeat data are excluded from our analysis wherever possible. The figures are updated monthly.

Weight distribution for Andesine

Occurrence is represented in % for different weight categories.

Price distribution for Andesine

Occurrence is represented in % for different value intervals.

Clarity distribution for Andesine

Occurrence is represented in % for different clarity grades.


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