Geocentral
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Optical Calcite - Bulk Mineral
How to demonstrate natural birefringence or image-doubling? Use this chunk of optical calcite.
Item#: 10968 Age: 7+
(1 customer reviews)
Amethyst - Bulk Mineral
This beautiful mineral is actually quartz with iron impurities!
Item#: 10973 Age: 7+
(1 customer reviews)
Quartz Point - Bulk Mineral
Neat Quartz points, made from one of the most abundant and most useful minerals on Earth.
Item#: 10970 Age: 7+
Dig Into Rocks Booklet
Small booklet that gets you started in the wonderful world of rocks, minerals and crystals.
Item#: 10980 Age: 7+
(2 customer reviews)
Sandstone - Bulk Mineral
One of the most essential rocks for study of geology.
Item#: 10978 Age: 7+
(1 customer reviews)
Chrysocolla - Bulk Mineral
This is a beautiful speciment of Chrysocolla rock. Makes a great addition to your school rock collection!
Item#: 11203 Age: 7+
(3 customer reviews)
Break-Your-Own Geodes Kit
Find the hidden crystals when you open your own geodes from this fun set.
Item#: 10967 Age: 10+
(3 customer reviews)
Fiery Mood Ring
This is one of the coolest mood rings available on the market. It features a fiery swirl design and it changes color depending on your mood.
Item#: 13347 Age: 6+
(6 customer reviews)
Gypsum Rosettes - Bulk Mineral
Beautiful gypsum rosettes or desert roses. Great for geology study.
Item#: 10975 Age: 7+
Rock and Mineral Excavation Mini Kit
Use digging tools and a dusting brush to uncover 2 hidden rocks and/or minerals in this fun and simple kit!
Item#: 15662 Age: 6+
Citrine Points - Bulk Mineral
Neat rock for the geology fanatic in your family!
Item#: 11206 Age: 7+
Fossils Excavation Mini Kit
Use digging tools and a dusting brush to uncover 2 hidden fossils in this fun and simple kit!
Item#: 16568 Age: 6+
(2 customer reviews)
Chalcopyrite - Rough Bulk Mineral
A unique mineral that will show off the breadth of your knowledge for your next science project.
Item#: 13346 Age: 7+
(3 customer reviews)
Emerald Quartz - Bulk Mineral
This emerald quartz specimen is a great addition to any rock collection!
Item#: 14257 Age: 7+
(1 customer reviews)
Petrified Wood - Bulk Mineral
Is this really wood? Well, it certainly used to be! An essential mineral to add to any mineral collection!
Item#: 13341 Age: 7+
Dig Into Fossils Booklet
Small booklet that gets you started in the world of fantastic fossils!
Item#: 13348 Age: 5+
Quartz Cluster - Small
This small quartz cluster is a great addition to any rock collection!
Item#: 14635 Age: 8+
Agate Bookends - Natural
A beautiful desk or bookshelf accessory for the reading fanatic in your family!
Item#: 13173 Age: 12+
Agate Bookends - Blue
A beautiful blue geological desk or bookshelf accessory for the reading fanatic in your family!
Item#: 13174 Age: 12+
Dino Skeleton Excavation Dig Mini Kit
Use digging tools and a dusting brush to uncover a hidden dinosaur fossil in this fun and simple kit!
Item#: 16706 Age: 10+
(1 customer reviews)
GeoCentral Fossils Science Kit
Learn about fascinating fossils and the curious creatures that created them with this 9 specimen introductory kit!
Item#: 16389 Age: 8+
GeoCentral Crystals Science Kit
Learn about the fascinating multi-faceted world of crystals with this 12 specimen introductory kit!
Item#: 16390 Age: 8+
Agate Bookends - Green
A beautiful green geological desk or bookshelf accessory for the reading fanatic in your family!
Item#: 14602 Age: 12+
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.