Assertion: onyx's layer | /r/CapableOf | become visible
Facets:
value: for easy identification
type: PURPOSE
value: under immersion
type: TEMPORAL
Source sentences:
text: Composite stones that are half amethyst and half citrine are also out there that have simply been glued together, but magnification should reveal something is amiss at the junction point between the two colors, and under immersion the two layers become visible for easy identification.