Assertion: chrysoprase's color | /r/HasProperty | caused
Facets:
Source sentences:
text: The color is caused by minute amounts of lead present during formation although this is a point of contention amongst scientists.
text: The white color is caused by minute fluid inclusions of gas, liquid, or both, trapped during crystal formation, making it of little value for optical and quality gemstone applications.
text: Some references state that the color is caused by minute inclusions of chrysocolla within the silica.