Gemmology
English | Български
Where am I? > Home > Repository > Chromium-dravite


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
Chromium-dravite — specimen 0559, photo © NMNHS
Chromium-dravite — specimen 0559, photo © NMNHS

Chromium-dravite — specimen 0559

Origin

East Africa
Tanzania
Chromium-dravite — specimen 0559, locality map
Data

Weight: 0.16 ct; size: 4.12 | 4.13 | 2.05 mm; shape: cushion triangle; colour: medium dark green; very slightly greyish; clarity: eye clean; cut: excellent; treatment: none.
Notes

Very clean specimen; design ‘99Simp’ by Jim Finlayson [pavilion angle changed to 41.00; skipping 43.00 crown], excellent cut by Tan Pen.

Other specimens
Chromium-dravite — specimen 0525

More information from ‘Classification’

Chromium-dravite

Some sources suggest the ‘chrome-tourmaline’ actually represents the mineral chromium-dravite.


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

© 2025 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.