organic gemstone
Dyed Coral
Calcium carbonate (CaCO3) - Calcite or Aragonite with dye
AI-generated identification · may be incorrectHardness 3-4, vitreous to dull luster. White naturally but dyed pink/red in this specimen. Displays characteristic star-like or radiating polyp patterns from the coral skeleton.
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Physical properties
Hardness 3-4, vitreous to dull luster. White naturally but dyed pink/red in this specimen. Displays characteristic star-like or radiating polyp patterns from the coral skeleton.
Formation & geological history
Formed by marine polyps creating calcium carbonate skeletons. Harvested from oceans and then artificially dyed to enhance color.
Uses & applications
Commonly used in inexpensive jewelry, beads, and carvings.
Geological facts
Many red/pink looking stones in the market with this radiating star pattern are actually dyed fossilized coral or modern coral.
Field identification & locations
Identifier is the distinct polyp structure (the circular/star patterns) combined with a pink/red color that often looks unnatural or pools in crevices, indicating dye.
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