Desiderio writing instruments are made of two-tone pearl resin with 925% solid silver finishes. The octagon – Montegrappa's signature – decorates the end of the cap, while the characteristic sphere of the clip and a thin band at the base of the cap are coloured in contrast with the body. When the cap is removed, the second color is also revealed at the junction of the fountain pen. All Montegrappa writing instruments are guaranteed against any manufacturing defect for 24 months from the date of purchase. Any part of this pen with a minor manufacturing defect discovered by our authorised customer service department will be repaired or replaced under warranty. To benefit from the international guarantee, simply present the international guarantee certificate, correctly filled in by one of our authorised dealers, complete with stamp and date, to one of the Montegrappa service centres.