Eisco Quartz - Rock Crystal Specimen (Mineral), Approx. 1" (3cm) Subcategory_Stopcocks showing how different wheel diameters

showing how different wheel diameters change mechanical advantage

5 inches) make north and south poles instantly identifiable during attraction

Thermally isolated 150mL aluminum reservoir inside a polystyrene-lined jacket

this oxygen data-logging sensor captures both dissolved and atmospheric oxygen levels across biology and ecology coursework

completing the positive-rail half of the long-haul plug-to-plug patch-wire pair

Eisco Quartz - Rock Crystal Specimen (Mineral), Approx. 1" (3cm) Subcategory_Stopcocks showing how different wheel diametersQuartz 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.