Blue Coral

Chemical Composition and Formation Process

Blue coral is a marine coral composed primarily of calcium carbonate (CaCO₃) with a distinctive blue color derived from iron and other trace elements within the coral’s skeleton. The formation of blue coral occurs in warm, shallow ocean waters where colonies grow over thousands of years, secreting calcium carbonate to form their hard skeletons, and is a part of the Hexacorallia subclass.

Names and Alternative Names

The name directly describes its appearance and marine origin. Alternative names include “Allopora,” based on its scientific classification. Also known as “Heliopora coerulea.” It is sometimes called “Blue Ridge Coral.”

Mythology and Legends

In Hawaiian mythology, coral is the “Sea’s Garden,” symbolizing life and protection. the coral associates with the goddess Pele, the goddess of fire and volcanoes. It brings protection and strength to those who possess it.
In ancient Chinese culture, it has healing properties and was used in traditional medicine. In Greek mythology, coral associated with the blood of Medusa, turning to stone upon contact with seawater.

Electric Cosmology

Marine biologists and engineers have been experimenting with artificial reefs called “biorocks.” Biorocks are steel frameworks submerged in the ocean, where divers attach living coral fragments using wire. An electrical cable connects to the biorock, triggering a chemical reaction that coats the steel with a form of limestone irresistible to corals. Over time, the metal structure becomes covered by a multicolored forest of coral. These biorocks provide a lifeline for reefs threatened by climate change and other stressors. The electric stimulation seems to enhance coral growth and resilience.

Mining, Production and Use

Historically, coastal communities collected it for use in jewelry and decorative items. Modern harvesting of blue coral is regulated to protect marine ecosystems, with most material coming from sustainable sources or as a byproduct of other activities. The coral is cleaned, cut, and polished to create beads and other jewelry items. Blue coral remains culturally significant in regions where it is harvested, often used in traditional crafts and ceremonies.

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Blue Coral


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