Random triples
| Subject | Object |
|---|---|
| gptkb:Opals | Vitreous |
| gptkb:Milky_Quartz | Vitreous |
| gptkb:covellite | metallic |
| gptkb:Nickel_chalcedony | waxy |
| gptkb:Pietersite | vitreous |
| gptkb:Red_beryl | vitreous |
| gptkb:Bunsenite | adamantine |
| gptkb:serpentine_group | greasy |
| gptkb:whitlockite | vitreous |
| gptkb:mottramite | subadamantine |
| gptkb:Wardite | vitreous |
| gptkb:zoisite | vitreous |
| gptkb:hydrozincite | pearly |
| gptkb:lechatelierite | vitreous |
| gptkb:joaquinite-(Ce) | vitreous |
| gptkb:Calcopirita | metallic |
| gptkb:Blue_topaz | Vitreous |
| gptkb:Almandine | vitreous |
| gptkb:Amphibole | Dull |
| gptkb:Phillipsite | pearly |