Eisco Quartz - Rock Crystal Specimen (Mineral), Approx. 1" (3cm) Material_PVC rocker arms

rocker arms

and lever-principle demonstrations

Connector 10 mm o

Built for introductory cell division teaching

illustrating the high-ratio speed reduction and self-locking action of worm gearing

Eisco Quartz - Rock Crystal Specimen (Mineral), Approx. 1" (3cm) Material_PVC rocker armsQuartz sample approximately 1" (3cm) in size A classic mineral, quartz is useful during lessons on mineral hardness, luster, and fracture Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements Euhedral crystal expression is perfect for collections Specimen comes in clear labeled and barcoded bag for ideal storage Quartz is one of the most abundant minerals on Earth.