Gemmology
English | Български
Where am I? > Home > Repository > Mahogany obsidian


Gallery view selector

Colour selector
Simple colour schemeredorangey redreddish orangeorangeorangey yellowyellowgreenish yellowyellowish greenslightly yellowish greengreenvery slightly bluish greenbluish greenvery strongly bluish greengreen-blue or blue-greenvery strongly greenish bluevery slightly greenish bluebluevioletish bluebluish violetvioletbluish purplepurplereddish purplestrongly purplish redslightly purplish redcolourlessgreyblack
Mahogany obsidian — specimen 0735, photo © NMNHS
Mahogany obsidian — specimen 0735, photo © NMNHS

Mahogany obsidian — specimen 0735

Origin

no precise locality [Africa]
Data

Weight: 2.86 ct; size: 9.47 | 7.06 | 4.84 mm; shape: rectangle; colour: dark red; clarity: opaque; cut: excellent; treatment: none.
Notes

Clean specimen; design ‘Rectangulum Cab’, excellent cut by Tan Pen.

Other specimens
Mahogany obsidian — specimen 0760Mahogany obsidian — specimen 0761

More information from ‘Classification’

Mahogany obsidian

A brownish variety of obsidian.


Gemmology — gemstones
Front page | Introduction | Classification | Repository | Library

© 2024 National Museum of Natural History, Sofia (NMNHS)
Use of this website assumes acceptance of our terms of use.

The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.