Assertion: chrysocolla chalcedony | /r/HasProperty | gem silica
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Source sentences:
text: Lesser-Known Related Gemstones and Minerals: Blue aventurine, hawk's eye , prasiolite, blood stone and chrysocolla chalcedony (gem silica), sardonyx, onyx, mystic quartz, strawberry quartz, rock crystal quartz and blue quartz are the rarer and lesser-known related materials.