Made in Czech Republic, these reverse carved picture stones are miniature works of art. Known historically as crystal paintings, each of these glass crystal stones is hand pressed with a smooth domed top through which you can see a detailed intaglio image, molded into the back of the stone. The intaglio carving is then painted or coated, and the surrounding surface is cut or polished to remove excess color and highlight the image. These are on a clear transparent base, with a vitrail gold color. A happy accident...they were supposed to be vitrail medium. ! when these are gone, they are gone...