Prima Marketing - Finnabair Art Ingredients Mega Art Stones 7.78 Ounces WhiteChange up your gesso, gels, pastes and acrylic paints with the Art Ingredients Mega Art Stones by Finnabair for Prima! The package contains one 7. 78 ounce container of white light weight art stones. Apply them directly to your project with glue and then paint or mix them with your favorite mediums and apply with a palette knife. These stones are archival safe and non toxic.