Assertion: paste | /r/HasAspect | air bubbles
Facets:
Source sentences:
text: Cut paste stones may be distinguished from real ones in several ways: (1) paste has air bubbles, natural stones do not; (2) paste is a poor conductor of heat, and so paste stones feel warm to the touch; and (3) paste, like all glass, has an easy conchoidal fracture, yielding brilliant curved surfaces particularly on the girdle (the widest part) of mounted stones near the mounting prongs.