Process for making a diamond tool for ceramic processing, said tool comprising: - a support body for fastening the tool to a machine, - an abrasive layer that abrades the ceramic, - an interface layer for connecting the abrasive layer to the support body, said process being characterized by the fact of comprising the following steps: - placing an aluminum ring-shaped support body inside a steel mold having the same shape and dimensions of the support body; - placing a mixture of interface powders inside the mold and above the support body so as to obtain the interface layer of the tool; - placing a mixture of abrasive powders inside the mold and above the mixture of interface powders so as to obtain the abrasive layer of the tool; - putting on top under pressure the mixture of abrasive powders and, consequently, the mixture of interface powders by means of a punch; - simultaneously with pressure action, heating the mold contents at a temperature between 580°C and 650°C for a time between 15 min. and 60 min.; in which the mixture of interface powders includes the following components percentages by weight: - i) at least 12% of aluminum powder, - ii) from 0 to 2.5% of a lubricant, - iii) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof; and in which the mixture of abrasion powders includes the following components percentages by weight: I) between 85% and 95% of a copper-based mixture, this mixture including the following components percentages by weight. a) at least 50% of copper; b) less than 30% of iron; c) between 5% and 25% of tin; d) less than 20% of graphite; II) between 5% and 15% of a secondary mixture, this secondary mixture including the following components percentages by weight: - A) more than 70% of aluminum powder, - B) from 0 to 2.5% of a lubricant, - C) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof. - a support body for fastening the tool to a machine, - an abrasive layer that abrades the ceramic, - an interface layer for connecting the abrasive layer to the support body, said process being characterized by the fact of comprising the following steps: - placing an aluminum ring-shaped support body inside a steel mold having the same shape and dimensions of the support body; - placing a mixture of interface powders inside the mold and above the support body so as to obtain the interface layer of the tool; - placing a mixture of abrasive powders inside the mold and above the mixture of interface powders so as to obtain the abrasive layer of the tool; - putting on top under pressure the mixture of abrasive powders and, consequently, the mixture of interface powders by means of a punch; - simultaneously with pressure action, heating the mold contents at a temperature between 580°C and 650°C for a time between 15 min. and 60 min.; - placing an aluminum ring-shaped support body inside a steel mold having the same shape and dimensions of the support body; - placing a mixture of interface powders inside the mold and above the support body so as to obtain the interface layer of the tool; - placing a mixture of abrasive powders inside the mold and above the mixture of interface powders so as to obtain the abrasive layer of the tool; - putting on top under pressure the mixture of abrasive powders and, consequently, the mixture of interface powders by means of a punch; - simultaneously with pressure action, heating the mold contents at a temperature between 580°C and 650°C for a time between 15 min. and 60 min.; in which the mixture of interface powders includes the following components percentages by weight: - i) at least 12% of aluminum powder, - ii) from 0 to 2.5% of a lubricant, - iii) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof; and - i) at least 12% of aluminum powder, - ii) from 0 to 2.5% of a lubricant, - iii) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof; and in which the mixture of abrasion powders includes the following components percentages by weight: I) between 85% and 95% of a copper-based mixture, this mixture including the following components percentages by weight. a) at least 50% of copper; b) less than 30% of iron; c) between 5% and 25% of tin; d) less than 20% of graphite; II) between 5% and 15% of a secondary mixture, this secondary mixture including the following components percentages by weight: - A) more than 70% of aluminum powder, - B) from 0 to 2.5% of a lubricant, - C) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof. I) between 85% and 95% of a copper-based mixture, this mixture including the following components percentages by weight. a) at least 50% of copper; b) less than 30% of iron; c) between 5% and 25% of tin; d) less than 20% of graphite; a) at least 50% of copper; b) less than 30% of iron; c) between 5% and 25% of tin; d) less than 20% of graphite; II) between 5% and 15% of a secondary mixture, this secondary mixture including the following components percentages by weight: - A) more than 70% of aluminum powder, - B) from 0 to 2.5% of a lubricant, - C) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof. - A) more than 70% of aluminum powder, - B) from 0 to 2.5% of a lubricant, - C) at least one powder component selected from the following substances: copper, magnesium, silicon and zinc or mixtures thereof.