The design of "Corbula Tonda" and "Corbula Ovale", a meeting point for the research of form essentiality and the aware repetition of motifs drawn from daily use objects, is based on the element filigree winded according to a motif in the spiral form. Spiral is a recurrent motif of Antonello Delogu's production, nowadays structures and decorations are characterized by the shape obtained by winding the gold wire around itself, although, in the past, the spiral was the decorative element within an object with complex, formal and symbolic references. The spiral element is complete; there is no point in using a support and it is no necessary another decorative element. The adaptation to the several typologies of the objects simply needs either a total absence of framework (earrings, ear drops, a string of pearls lock) or (as far as bracelets and rings) the immersion of the element in a perfectly reflecting surface and with wavy borders to give a light frame whose function is to exalt the element. Starting from the little ball in the middle, this element gives shape to a progressively widening spiral, as it is suggested by the gold wire broken in the outer side, to recall the idea of composition: There is a start (the little ball, polished) and the suggestion of an end, a conclusion which is not sharply given. It is a sort of suspension: the shape is close, finished; a hint, the complete break, reminds a further development which is only a promise, creating a strain when you pass from a comprehensive view to a more accurately view. These are the rules of the innovative research of "designer-makers": to start from a traditional preexisting shape, to put in evidence the dynamic features, recalling their development in space and their growth in the more elementary shapes, but always staying within the essential closed shape (round or oval), shape which claims its own autonomy even when it is inserted in an object whose aim is obviously to decorate. All that happens according to an approach to make things which is not a mere application of principles and norms; it is instead a research of balance and strains which comes from the direct manipulation and test of materials, from the exaltation of blending creativeness and realization, it is a continuous development of results, a continuous reconsidering the consolidated shapes, settled in the tradition that, being aware of it, it is possible to create.