RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA / SCIENCE PHOTO LIBRARY
Red spinel on calcite. Spinel is a mineral, magnesium aluminium oxide (MgAl2O4). In its pure form it is colourless, but small amounts of chemical impurities create myriad hues. The red variety of gem quality has a specific name: ruby spinel. Calcite is a stable form of calcium carbonate, and is the main constituent of limestone, chalk and marble.
Model release not required. Property release not required.
Contact us if you require the original or other formats.