Ryoma Rainbow

Ryoma Rainbow Damascus is a variation of Haiku Intl.'s sub brand, Ryoma, alongside its parent brand Haiku, the famous Japanese knives made in Seki, Japan. The Ryoma Rainbow Damascus collection opens a new chapter in the world of Asian cutlery. Alongside Haiku, the benchmark for knives made in Seki, Ryoma Rainbow asserts an identity in which artisanal excellence is fuelled by a resolutely contemporary aesthetic. A subtle fusion of the centuries-old tradition of Asian cutlery and its core technology with a dynamic, contemporary design. 

With Ryoma Rainbow, we move beyond the conventional concept of cutlery as we have known it to become a living art form. Each blade, forged and then hand-sharpened, captures the light and transforms it into a palette of coppery, golden and silvery reflections. Its iridescence shifts with every movement, revealing an almost hypnotic depth. More than just a knife, it is a blade that interacts with the light.

This visual signature is the result of a craft that remains a closely guarded secret. Very few manufacturers in the world are mastering the art of coloured Damascus steel. Ryoma has thus established itself as one of the pioneers in the still niche world of what is also called copper Damascus. Even more remarkable, this collection is the first to offer genuine ‘Rainbow’ Damascus steel, composed of three alloys – steel, copper and brass – at a price point never before seen. 

With Ryoma Rainbow, Damascus steel becomes a work of light. Hand-sharpened, each blade reveals a fascinating iridescence whose reflections shift with the light and the angle of the viewer’s gaze. With every movement, the hues change, revealing a striking visual depth that transforms the knife into a true work of art.

The shimmering reflections of the hammered Damascus steel arise from the combination of three carefully selected metals : high-carbon (1%) Japanese AUS10 steel, which guarantees a remarkable cutting edge ; copper, which lends its warm, coppery hues ; and brass, whose golden flecks illuminate the blade. Combined in a 67-layer construction, they create a Damascus steel of rare elegance, enhanced by a Japanese V-edge grind of exceptional precision.

Designed for both discerning chefs and cooking enthusiasts in pursuit of excellence, Ryoma Rainbow knives combine cutting performance with timeless beauty. Their traditional octagonal rosewood handle, shaped to offer a natural grip, is enhanced by two metal rings, the rear of which is delicately engraved with the ‘R’, the Ryoma brand’s signature.

Each knife is a unique piece. The patterns of the coloured Damascus steel, shaped by fire and metal, are never repeated. Similarly, the natural grain of the rosewood reveals unique shades, ranging from deep red to warm brown. Thus, every Ryoma Rainbow knife possesses its own distinct identity : a fusion of the craftsman’s skill, the nobility of the materials and the poetry of light.