Abstract: A chemiluminscent coaster includes a coaster combined with a luminous filler or light source, structured as a shell containing reagents for inducing chemiluminescence. At least one surface of the coaster is light transmissive, being wholly or partially transparent or translucent. A single-use chemiluminescent coaster may use light sources in which the reaction takes place extemporaneously at the time of use, or may include light sources wherein pre-mixed reagents are kept at -40.degree. C. in order to prevent any chemiluminescent reaction. Reusable chemiluminscent coasters preferably use extemporaneously chemiluminescent sources. The coaster is structured to permit expansion due to gaseous discharge during the chemiluminescent reaction. A surface thereof may include an opening to permit dilation of the shell, or may be made at least partially of a supple, expandable, material.

Abstract: The invention relates to the use of chemiluminescent light for the illumination of liquids contained in transparent or translucent containers. The methods used are the use of reactants already mixed but preserved under very cold conditions, below -40.degree. C., to freeze the chemiluminescence reaction and the use of chemiluminescent compounds reactivating extemporaneously at the desired moment. The two systems of use of this process are to carry it out either in the liquid to be illuminated or outside the latter.