Pink coral, which is a natural gem produced by microorganisms in the sea, has been loved as a material that can be used for jewelry since ancient times. The beautiful pink color is unique and stands out among other gems. It contains quite a lot of calcium carbonate, so it is very hard and durable. Since ancient times, it has been used as an ornament for food vessels, musical instruments, accessories for people such as bracelets and necklaces... In addition to this, the world's first coral ring was found in the 4th century BC in Italy.
