Datolite — specimen 0168, photo © NMNHS

Datolite — specimen 0168

Origin

North America

USA, Connecticut, Hartford County, Farmington

Data

Weight: 1.12 ct; size: 7.80 | 5.90 | 4.15 mm; shape: oval; colour: colourless; clarity: eye clean; cut: good; treatment: none.

Notes

Very clean specimen; good mixed style cut.

More information from ‘Classification’

Datolite

A secondary mineral in mafic igneous rocks; in geodes in tuffs; in skarns in limestones; in serpentinites and schists; from some ore veins (Anthony et al., 2001—2005). Faceted specimens are extremely rare.