Idocrase market statistics

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Idocrase

  • Color: green, yellow, brown, orange, purple, blue
  • Hardness: 6.5
  • Refractive index: 1.67 - 1.76
  • Density: 3.32 - 3.50
  • Chemical composition: Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
  • Crystal structure: tetragonal
  • Origins: Canada, USA, Italy, Russia, Switzerland, Tanzania, Kenya, Sri Lanka

Alternative name is vesuvianite. Rarely used in jewelry, this mineral is mostly interesting for collectors. Clean crystals over 5 ct. are rare, with purple or blue varieties being unusual and therefore the most expensive.

 

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 Idocrase

Occurrence is represented in % for different weight categories.

Price distribution for Idocrase

Occurrence is represented in % for different value intervals.

Clarity distribution for Idocrase

Occurrence is represented in % for different clarity grades.

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Idocrase market prices