This is a beautiful speciment of Chrysocolla rock. Makes a great addition to your school rock collection!
$2.99 $1.95
Item#: 11203 Age: 7+
(3 customer reviews)
Is this really wood? Well, it certainly used to be! An essential mineral to add to any mineral collection!
$2.99 $1.95
Item#: 13341 Age: 7+
Neat rock for the geology fanatic in your family!
$2.99 $1.95
Item#: 11206 Age: 7+
Beautiful gypsum rosettes or desert roses. Great for geology study.
$2.99 $1.95
Item#: 10975 Age: 7+
This beautiful mineral is actually quartz with iron impurities!
$2.99 $1.95
Item#: 10973 Age: 7+
(1 customer reviews)
A MUST-HAVE for the rock collector in your family!
$2.99 $1.95
Item#: 12300 Age: 8+
Unique rock to add to your rock collection!
$2.99 $1.95
Item#: 11197 Age: 7+
Neat Quartz points, made from one of the most abundant and most useful minerals on Earth.
$2.99 $1.95
Item#: 10970 Age: 7+
This emerald quartz specimen is a great addition to any rock collection!
$2.99 $1.95
Item#: 14257 Age: 7+
(1 customer reviews)
An essential mineral to add to any mineral collection!
$2.99 $1.95
Item#: 13343 Age: 7+
How to demonstrate natural birefringence or image-doubling? Use this chunk of optical calcite.
$5.99 $3.95
Item#: 10968 Age: 7+
(2 customer reviews)
A unique mineral that will show off the breadth of your knowledge for your next science project.
$3.99 $2.95
Item#: 13346 Age: 7+
(3 customer reviews)
Great tumbled quartz piece to add to any rock collection!
$2.99 $1.49
Item#: 13661 Age: 7+
Quartzite is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone.
$19.99 $12.95
Item#: 17308 Age: 14+
Beautiful rock to add to your rock collection!
$2.99 $1.95
Item#: 11199 Age: 7+
Sandstone is a clastic sedimentary rock composed mainly of sand-sized silicate grains.
$19.99 $16.95
Item#: 17288 Age: 14+
You will get a set of ten Quartz chalcedony chunks approximately 1 inch in size.
$19.99 $14.95
Item#: 17304 Age: 14+
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate.
$19.99 $14.95
Item#: 17307 Age: 14+
The Dolomites are sedimentary carbonate rocks composed mainly of the mineral dolomite. A high manganese content gives the crystals a rosy pink color.
$19.99 $15.95
Item#: 17306 Age: 14+
You will get a set of ten Snowflake Obsidian rocks approximately 1 inch in size.
$19.99 $14.95
Item#: 17289 Age: 14+
Welcome to xUmp.com, your one-stop shop for all your scientific and STEM needs! Our extensive selection of science supplies has been carefully curated by real scientists and educators, ensuring that you'll find only the best and most educational products on our site. Whether you're a teacher looking for classroom supplies, a student gearing up for a science fair, or a science enthusiast looking for the perfect gift, we've got you covered. From chemistry glassware and lab equipment to robots and science kits, we have everything you need to explore the exciting world of science. Browse our store today and discover the wonder of science!