The Maël series rings feature a unique technique that cannot be replicated in Japan. The inner part of the cup in the center of the ring is colored using color rhodium plating. When a diamond is set in the ring, internal reflections enhance the diamond's color, making it appear even more vibrant.

No alterations are made to the diamond itself, so the concept is entirely different from jewelry that uses artificially treated diamonds, such as treated or HPHT diamonds.

This innovative approach to ring craftsmanship allows for the creation of high-end fancy color diamond jewelry at a relatively lower price, without sacrificing the value of the stone by directly altering it. This concept has become highly popular overseas.

For example, when a stone with a color like Fancy Light Yellow is set, the color can appear as intense as Fancy Intense Yellow.