geological
Showing 41–60 of 100 results
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Geological Specimens
Pumice from Santorini — Polished Face
Mohs hardness: 5.5–6$21.61 -
Geological Specimens
Oolitic Limestone — Polished Face
Mohs hardness: 3$47.02 -
Geological Specimens
Fulgurite — Desert Glass Tube — Polished Face
Mohs hardness: 5.5–6$71.61 -
Geological Specimens
Pele’s Tears — Hawaiian — Polished Face
Mohs hardness: 5–5.5$39.27 -
Geological Specimens
Radiolarite — Large Specimen
Mohs hardness: 6.5–7$21.93 -
Geological Specimens
Radiolarite — Specimen Grade
Mohs hardness: 6.5–7$43.96 -
Geological Specimens
Fulgurite — Desert Glass Tube
Mohs hardness: 5.5–6$84.86 -
Geological Specimens
Conglomerate — Tillite — Display Grade
Mohs hardness: varies$33.18 -
Geological Specimens
Obsidian — Mahogany Flow
Mohs hardness: 5–5.5$66.19 -
Geological Specimens
Pumice from Santorini — Large Specimen
Mohs hardness: 5.5–6$39.11 -
Geological Specimens
Radiolarite — Polished Face
Mohs hardness: 6.5–7$40.53 -
Geological Specimens
Garnet Schist — Specimen Grade
Mohs hardness: 5.5–7.5$74.71 -
Geological Specimens
Garnet Schist — Display Grade
Mohs hardness: 5.5–7.5$128.87 -
Geological Specimens
Obsidian — Mahogany Flow — Display Grade
Mohs hardness: 5–5.5$28.68 -
Geological Specimens
Serpentinite — Specimen Grade
Mohs hardness: 3–4$64.71 -
Geological Specimens
Celestite Geode — Whole — Field Specimen
Mohs hardness: 3–3.5$501.51 -
Geological Specimens
Banded Iron Formation — Display Grade
Mohs hardness: 5.5–7$143.41 -
Geological Specimens
Serpentinite — Polished Face
Mohs hardness: 3–4$37.31 -
Geological Specimens
Pele’s Tears — Hawaiian
Mohs hardness: 5–5.5$52.21 -
Geological Specimens
Amethyst Cathedral Geode — Half
Mohs hardness: 7$331.89