EISCO 12PK Raw Porphyritic Granite, Igneous Rock Specimen - Approx. 1"- Geologist Selected & Hand Processed - Great for Science Classrooms
from $15.99 ($1.33 / Count)
EISCO Raw Porphyritic Granite, Igneous Rock Specimen - Hand Sample - Approx. 3"- Geologist Selected & Hand Processed - Great for Science Classrooms
from $8.99
EISCO Porphyritic Granite Specimen (Igneous Rock), Approx. 1" (3cm)
from $9.99
The Petrology of the Prospect Porphyritic Gneiss of Connecticut
from $5.90
EISCO Rock Cycle Kit, 12 Pieces - Includes Metamorphic, Igneous & Sedimentary Rocks - 1" Specimens - Fun Geology Activity for Exploring The Rock Cycle & Rock Types - Tech Cut Rocks
from $17.99
EISCO Porphyritic Granite Specimen (Igneous Rock), Approx. 1" (3cm) - Pack of 12
from $41.49
Porphyritic Rhyolite Igneous Rock - 2 Unpolished Rock Specimens
AtkitS Crystal Opal porphyritic Egg-Shaped Stone Natural Crystal Mineral Decoration Series
from $53.04
Porphyritic
from $1.29
Beautiful Opal porphyritic Egg-Shaped Stone Natural Crystal Mineral Decoration Series
from $55.96
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