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Diaspore — specimen 0209, photo © NMNHS
Diaspore — specimen 0209, photo © NMNHS

Diasporespecimen 0209


Western Asia
Diaspore — specimen 0209, locality map

Weight: 0.60 ct; size: 6.32 | 4.35 | 2.54 mm; shape: oval; colour: light yellowish green; very slightly greyish; clarity: eye clean; cut: fair; treatment: none.

Very clean specimen; mixed style cut.

Other specimens
Diaspore — specimen 0464Diaspore — specimen 0219

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).