These 1/4 inch thick black streak plates are ideal for testing the hardness or softness of minerals, as well as determining the color of lighter-colored minerals. By scratching the mineral in question against the plates, students or teachers can determine these properties by observing the quantity and hue of the residue left behind. Excellent for use in the classroom, or at home for aspiring geologists.
Cool new Pi tee featuring ultra soft and light blue 100% cotton shirt.
This caffeine molecule mug makes an excellent gift!
A massive mounted set of 100 rocks and minerals found in the US,
Great reference card for chemistry and physics students.
Build 14 assorted solar robots, some of which can travel over water!
Watch what your music can create with this amazing Snap Circuits set!
At xUmp.com you will find a large selection of scientific products carefully curated by real scientists and educators. We sell everything from educational toys, teacher supplies for science classroom, lab equipment, science toys, science fair supplies, classroom equipment, chemistry glassware, chemistry lab equipment, physics demos, electronics supplies, robots, science kits to geeky science gifts.