Assertion: moss agate | /r/HasProperty | translucent chalcedony
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Source sentences:
text: Agate is usually (but not rigorously) defined as chalcedony with concentric bands of contrasting color, but moss agate is translucent chalcedony with wispy, moss-like inclusions of chlorite (green), manganese oxide (black), and/or iron oxide (brown or reddish).