Gemmology
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Rutile — specimen 0173, photo © NMNHS
Rutile — specimen 0173, photo © NMNHS

Rutilespecimen 0173

Origin

South America
Brazil
Rutile — specimen 0173, locality map
Data

Weight: 0.97 ct; size: 6.54 | 4.79 | 2.85 mm; shape: octagon; colour: dark red; clarity: eye clean; cut: good; treatment: none.
Notes

Very clean specimen; good step cut style. Source: John Bradshaw, Coast to Coast Rare Stones International.

More information from ‘Classification’


A common accessory mineral in igneous rocks, anorthosite, and granite pegmatites; in hydrothermally-altered rocks; in gneiss, schist, contact metamorphosed limestones; in clays, shales (Anthony et al., 2001—2005). Faceted specimens are very rare.