Kornerupine market statistics

Kornerupine

Color: green, yellow-green, brown, blue-green Hardness: 7 Refractive index: 1.66 - 1.69 Density: 3.25 - 3.35 Chemical composition: (Mg,Fe)4(Al,Fe)6(SiO4,BO4)5(O,OH)2 Crystal structure: orthorhombic Origins: Greenland, Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia. Collector's stone. Crystals demonstrate noticeable pleochroism effect, from yellowish-green to reddish-brown, with clean specimens over 5 ct. being rare.

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 Kornerupine

Occurrence is represented in % for different weight categories.

Price distribution for Kornerupine

Occurrence is represented in % for different value intervals.

Clarity distribution for Kornerupine

Occurrence is represented in % for different clarity grades.

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