How to recognise genuine Mediterranean red coral
Mediterranean red coral is one of the most imitated materials in jewellery. Here are the criteria that settle the question — even if you are not in the trade.
Starting pointIt is not a stone
Red coral (Corallium rubrum) is the calcareous skeleton of a marine animal. It grows a few millimetres a year, in branching colonies, on Mediterranean seabeds. That slow growth explains its rarity, its price, and most of the criteria below: a living organism never produces a perfectly regular material.
What you may come acrossThree families of imitation
Dyed bamboo coral
A different marine species, whitish in its natural state, artificially dyed red. This is the most widespread imitation. Tell-tale sign: a perfectly uniform colour, sometimes brighter than nature, which can rub off slightly.
Reconstituted coral
Coral powder bound with coloured resin. The material was genuine to begin with, but the object no longer is. Tell-tale sign: no veining, no inclusions, a surface that is too smooth.
Pure imitations
Resin, glass paste, plastic. The main giveaway is weight. They are noticeably lighter, and often warm to the touch where coral stays cool.
The criteriaWhat to look at, in order
| Criterion | Genuine coral | Imitation |
|---|---|---|
| Colour | Varied, with shifts within a single piece | Uniform, sometimes too bright |
| Surface | Fine veining, slight inclusions, never perfect | Smooth and regular |
| Weight | Dense, heavier than expected | Light |
| Touch | Cool, slow to warm up | Warm straight away |
| Price | High, specific to each piece | Low and uniform |
For a non-specialist, the most reliable test is the combination of varied colour and unexpected weight. A perfectly uniform, lightweight piece is not Mediterranean red coral.
Price does not lie. A genuine red coral necklace does not cost a few euros. If the price seems too good, it usually corresponds to something else — which is not illegal, as long as the material is named correctly.
The best indicatorWhat the seller should be able to tell you
No visual test replaces a precise answer. A serious professional can tell you which species it is, where the material comes from and how it was worked. If they hesitate, or answer “it’s coral” and nothing more, the question is worth asking again.
Two phrases should put you on alert. “Red gold”: the word gold is reserved for precious metals, and red gold already means a gold alloy. “Precious stone”: coral is not a stone, and that term is regulated.
A mark of seriousnessThe regulations themselves
Red coral fishing is among the most tightly controlled in the Mediterranean: harvested by hand, with a hammer, by divers; branches of at least 7 mm at the base; no harvesting above 50 metres; annual quotas; state licences in very small numbers.
A seller who knows these rules and explains them works with the licensed supply chain. A private individual, on the other hand, may not collect coral — not even a fragment found on the beach.
Frequently askedWhat people ask us most
Is Mediterranean red coral banned from sale?
No. It is the fishing that is strictly controlled, not the sale or the purchase. Anyone may freely buy a red coral piece that comes from the licensed professional supply chain.
Can I take it home abroad?
Mediterranean red coral is not listed under the CITES convention, unlike some Pacific corals often sold under the same name. For travel outside the European Union, customs formalities remain a matter for the authorities of your destination country.
My coral has faded. Is that normal?
Yes. It is an organic material: it can dull over time, particularly through contact with perfume, perspiration and salt water. A little castor or sweet almond oil, applied gently and without rubbing, restores its lustre.
Why do two pieces of the same size have different prices?
The quality of coral lies in its purity, the depth of its red and the fineness of its polish. The fewer inclusions and small gaps a piece shows, the more sought after it is.
The best test is still your own hand. Weight, coolness, the grain of the surface — all take seconds to judge once you have held a genuine piece. Come and see us: we put both in your hand, and the question answers itself.