C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
C09K11/00—Luminescent materials, e.g. electroluminescent or chemiluminescent
C09K11/04—Luminescent materials, e.g. electroluminescent or chemiluminescent containing natural or artificial radioactive elements or unspecified radioactive elements
Procede d'illumination des pierres taillees a fond reflechissant dans un milieu sombre en presence de rayonnements ultraviolets, et produit issu d'un tel procede