Head noun: citrine

Same concepts
http://dbpedia.org/resource/Quartz

Narrower concepts

labelprovenanceconfidence
stoneisap:2306626510.189575
quartzisap:4491458010.101600
sapphireisap:3464547110.100663
amethystisap:3439929950.075454
howeverisap:4338166990.050719
gemisap:2358884250.040278