Assertion: stone's color | /r/HasProperty | dark blue
Facets:
value: as in maxixe
type: TEMPORAL
value: between the bright lamellae
type: LOCATION
Source sentences:
text: Color: dark blue to greenish-blue to purple-blue
text: Between the bright lamellae, the color is dark brown to black.
text: Fe3+ ions produce golden-yellow color, and when both Fe2+ and Fe3+ are present, the color is a darker blue as in maxixe.