a glass-clay paste cameo incrusted in glass
A whitish clay image carefully matched to the expansion of the glass which is placed in a paperweight or vessel wall. The air in the clay gives a silvery sheen to enclosure, looking like matte finish silver. According to the book "Sulphides", enclosure is done blowing out the end of a flat bubble, inserting the heated sulphide, reheating and sealing the end, then reheating and sucking the air out through the pipe.
a white ceramic object that has been cast and fired in a kiln, then encased in glass to produce a marble, paperweight, button, or other object
(CRYSTALLO-CERAMIE or CAMEO INCRUSTATION) a three-dimensional ceramic medallion or portrait plaque used as a decorative enclosure for paperweight or other glass object.
A three-dimensional ceramic medallion or portrait enclosed in a glass paperweight.