Gemmology
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Topaz — specimen 0500, photo © NMNHS
Topaz — specimen 0500, photo © NMNHS

Topazspecimen 0500

Origin

South America
Brazil
Topaz — specimen 0500, locality map
Data

Weight: 1.93 ct; size: 8.86 | 7.55 | 5.40 mm; shape: oval; colour: light green-blue or blue-green; strong; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; design ‘Ovalimixtum ST’, excellent cut by Tan Pen.

Other specimens
Topaz — specimen 0573Topaz — specimen 0055Topaz — specimen 0556Topaz — specimen 0503Topaz — specimen 0550Topaz — specimen 0567Topaz — specimen 0007Topaz — specimen 0560Topaz — specimen 0286Topaz — specimen 0562Topaz — specimen 0583Topaz — specimen 0579Topaz — specimen 0585Topaz — specimen 0593Topaz — specimen 0574Topaz — specimen 0058Topaz — specimen 0551Topaz — specimen 0293

More information from ‘Classification’


In veins and cavities in granite, granite pegmatite, rhyolite, and in greisen, formed from high-temperature, volatile-rich pneumatolytic hydrothermal fluids. From metamorphism of aluminous, quartz-rich, and fluorine-bearing sediments (Anthony et al., 2001—2005).