Quartz crystal with pale lavender to deep purple colors is called amethyst. The colors are caused by traces of iron in the quartz and will be lost if heated. Amethyst is used mainly for decoration. The deep purple specimens are valued as gemstones. Great for science projects or classroom collection.
Note: Please be aware that this is a natural mineral and as such each piece is one of a kind! The one you receive may not be exactly the same as the ones pictured but it will be similar. Price is per each piece. They come in irregular shapes, sizes and weights.
You don’t think recycling is cool? Get a look at this, we’re sure you’ll change your mind!
Shake the Pet Tornado clockwise and watch the mini tornado funnel form before your eyes!
This classic device is used to demonstrate the conservation of mechanical energy.
Build a magnetic levitating train with this science fair project kit!
A combination of three of our great discovery toys, all in one package!
This high precision gyroscope will amaze you with rotational speed and ease of precision.
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.