Specializes in advising and consulting gemological, we operate on the market since 1955, making the identification, classification and evaluation of precious stones and jewelery.
On the market since 1955, we're specialized on gemological consulting and advising. We make the identification, classification and appraisal of precious stones and jewelery.
We maintain the tradition of four generations of jewelers and gemologists in the family. Our professionals are graduates and postgraduates by the GIA (Gemological Institute of America - USA) and UFOP (Universidade Federal de Ouro Preto - MG), and are also members of the AGA (Accredited Gemologists Association), the NAJA (National Association of Jewelry Appraisers) and  APJERJ (Association of Legal Experts of the State of Rio de Janeiro).

Walter Leite's Laboratory provides modern and sophisticated technical and scientific equipment used in the field of Gemology.

A market this exclusive and mysterious becomes more effective when his admirers have some knowledge of the material which they are buying or dealing with. Therefore, we seek to enhance our customers' admiration for gemstones and jewelry, offering courses and lectures with high quality standards. We are in favor that the knowledge is available to everyone.