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Diaspore — specimen 0219, photo © NMNHS
Diaspore — specimen 0219, photo © NMNHS

Diasporespecimen 0219


Western Asia
Diaspore — specimen 0219, locality map

Weight: 0.76 ct; size: 7.67 | 4.27 | 2.57 mm; shape: octagon; colour: light yellowish green; very slightly greyish; clarity: eye clean; cut: fair; treatment: none.

Very clean specimen; radiant style cut.

Other specimens
Diaspore — specimen 0209Diaspore — specimen 0464

More information from ‘Classification’

A final product of diagenesis in bauxite deposits formed by the tropical weathering of alumino-silicate rocks; from hydrothermal alteration of aluminous minerals; a hydrothermal mineral in some alkalic pegmatites (Anthony et al., 2001—2005). The largest faceted specimen is a 157.66 carat from Turkey (Arem, 1987: 82).