Yes, the commercial coral jewelry trade is a significant contributor to the degradation of fragile reef ecosystems, though it is not the sole cause. While modern regulations and sustainable harvesting exist, a large portion of coral used in jewelry historically—and illegally today—comes from destructive practices that damage or kill living reefs.
Background: Coral as a Gemstone
Coral has been used in adornment for thousands of years, with evidence of coral beads in ancient Celtic burials and Roman jewelry. It is one of the few biogenic gemstones, meaning it is produced by a living organism—specifically, the calcium carbonate skeletons of tiny marine animals called polyps. The most prized variety for jewelry is precious coral (Corallium rubrum), found primarily in the Mediterranean Sea and parts of the Pacific. Its deep red or pink branches have been carved into cameos, beads, and talismans for centuries.
Unlike gemstones mined from the earth, coral is a renewable resource, but only if harvested sustainably. The problem is that coral grows extremely slowly—some precious corals grow less than a millimeter per year—and the demand for jewelry has historically outpaced the reefs’ ability to regenerate. This has led to overexploitation and a shift toward more destructive harvesting methods.
How Harvesting Damages Reefs
The primary issue is not the removal of a single branch, but the methods used to collect it. Here are the main destructive practices:
- Bottom trawling: In the past, and in some unregulated areas today, coral was harvested by dragging heavy nets or chains across the seafloor. This tears up entire colonies of coral, destroys the habitat for fish and other marine life, and leaves behind a barren, crushed landscape.
- Blasting: In some regions, dynamite or other explosives have been used to break off coral branches. This kills everything in the immediate area and shatters the reef structure, which can take decades to recover.
- Unsustainable hand harvesting: Even when divers collect coral by hand, they often break off large branches to meet market demand. This can stress the colony and make it more susceptible to disease. If they harvest the entire colony, it is effectively dead.
Furthermore, the harvesting of deep-sea corals (such as gold coral and bamboo coral) often requires submersibles or dredges that can cause even more damage to the surrounding ecosystem, as these corals are often hundreds or thousands of years old and are extremely slow-growing.
Regulations and Sustainable Sourcing
Recognizing the threat, several international and national regulations now govern coral trade. The most important is the Convention on International Trade in Endangered Species (CITES), which lists several coral species under Appendix II, requiring export permits to ensure trade is not detrimental to the species’ survival. In the Mediterranean, countries like Italy and France have established quotas and size limits for harvesting red coral.
However, enforcement is challenging. Illegal harvesting and smuggling still occur, and the demand for cheap coral jewelry in some markets continues to fuel unsustainable practices. Consumers who want to wear coral responsibly should look for certified sustainable sources, such as those that use aquacultured coral (grown in controlled tanks) or that harvest only dead, beached coral. However, be aware that even “dead” coral may have been part of a living reef structure, and its removal can affect the ecosystem.
Common Problems and Misconceptions
A common misconception is that all coral is the same. In reality, there is a huge difference between precious coral (used in jewelry) and reef-building coral (which forms tropical reefs). Precious coral lives in deeper, cooler waters and does not form the vast tropical reefs we associate with coral ecosystems. However, the two are often confused, and the destruction of precious coral habitats still has a significant ecological impact.
Another problem is the use of “dyed” coral. Many pieces of jewelry labeled as “coral” are actually dyed bone, plastic, or even other types of stone. This not only misleads consumers but also perpetuates a market that may not be transparent about its sourcing. A simple test is to check for a porous surface and natural color variation—real coral often has tiny pits or lines.
Alternatives to Natural Coral
For those who love the look of coral but do not want to contribute to reef damage, there are several ethical alternatives:
- Aquacultured coral: Some companies now grow coral in controlled environments, which can be harvested without impacting wild reefs. This is a growing but still limited market.
- Resin or glass imitations: Many modern jewelry pieces use resin or glass that mimics the color and texture of coral. These are often indistinguishable at a glance and are completely eco-friendly.
- Bamboo coral or other non-protected species: Some coral species are not endangered and can be harvested with less environmental impact, though it is still important to verify the source.
- Vintage or antique coral: Buying second-hand coral jewelry does not create new demand for harvesting. It is a sustainable choice that also has a unique history.
Costs and Market Value
Genuine precious coral is expensive. High-quality red coral (Corallium rubrum) can cost anywhere from $50 to over $1,000 per carat, depending on color, size, and craftsmanship. The price reflects its rarity, slow growth, and the difficulty of harvesting. However, the high price also creates an incentive for illegal harvesting. Cheaper coral jewelry, often made from white or pink coral, is more affordable but may come from less regulated sources. The market is opaque, and without certification, it is difficult for a consumer to know the true origin of the coral.
Safety and Ethical Considerations
From a safety perspective, coral jewelry is generally safe to wear. However, some people may develop skin irritation from the porous surface or from dyes used in cheaper imitations. It is also important to note that coral is a relatively soft gemstone (3.5-4 on the Mohs scale), so it can scratch or break easily.
Ethically, the main concern is environmental. The destruction of coral reefs—whether precious or reef-building—has a cascading effect on marine biodiversity. Reefs are nurseries for many fish species and protect coastlines from erosion. Even if you buy a piece of coral that was legally harvested, you are still supporting an industry that has a history of environmental harm. The most ethical choice is to avoid new natural coral altogether.
Frequently Asked Questions
Is all coral jewelry illegal?
No, not all coral jewelry is illegal. Many countries allow the trade of certain coral species under strict regulations, such as those listed in CITES Appendix II. However, it is illegal to trade in coral species that are listed as endangered, and there are restrictions on the size and quantity that can be harvested. The legality often depends on the species, the country of origin, and whether proper permits are in place.
How can I tell if my coral is real?
Real coral is porous and will have a slightly grainy texture. You can test it by touching it to your tongue—it should stick slightly due to its porous nature. Also, real coral will not burn easily and will not be perfectly uniform in color. If you are unsure, take it to a professional gemologist who can test it. Be wary of very cheap “coral” that is often dyed plastic or bone.
What is the difference between red coral and white coral?
Red coral (Corallium rubrum) is the most prized and is found in the Mediterranean and parts of the Pacific. It is often used in high-end jewelry. White coral is usually from other species and is more common. The color difference is due to the amount of iron oxide in the skeleton. Both are living organisms, and both are affected by overharvesting.
Does buying coral jewelry really affect the reefs?
Yes, it does. Even if you buy a piece that was harvested sustainably, the demand for coral jewelry drives the market. When demand is high, illegal and destructive harvesting increases. By choosing not to buy natural coral, you reduce the economic incentive for these practices and help protect the reefs.
What is the best alternative to coral jewelry?
The best alternative is to choose jewelry made from recycled materials, resin, glass, or even bamboo coral (which is not as heavily exploited). Vintage or antique coral is also a good option because it does not create new demand. If you want the look of coral without the environmental impact, these alternatives are your best bet.
Related
- Mineral Ore Export Economies: How They Work
- Burkina Faso Borders: 6 Neighboring Countries
- Auschwitz Horrors: Facts, History & Legacy
How pages are sourced and corrected: Sources and editorial policy.