Where am I? >
Gallery view selector
Sphalerite — specimen 0198, photo © NMNHS
3.04 | 3.03 | 2.14 mm;
medium orangey yellow; strong;
Clean specimen; good mixed style cut.
More information from ‘Classification’
Formed under a wide range of low- to high-temperature hydrothermal conditions; in coal, limestone, and other sedimentary deposits (
Anthony et al., 2001—2005
). There are faceted specimens from Spain over 350 carats.
Gemmology — gemstones
National Museum of Natural History, Sofia
Use of this website assumes acceptance of our
. For contacts:
None of the specimens illustrated in this site is on display in the permanent exhibition of the National Museum of Natural History, Sofia.