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Geocentral

Optical Calcite - Bulk Mineral

Great image-doubling optical calcite!

Item#: 10968 Age: 7+
4 Stars (1 customer reviews)

Amethyst - Bulk Mineral

This beautiful mineral is actually quartz with iron impurities!

Item#: 10973 Age: 7+
5 Stars (1 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+
5 Stars (3 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+
5 Stars (1 customer reviews)

Obsidian Arrowhead

Great gift for any occasion or for little Jimmy’s cowboy birthday party!

Item#: 11198 Age: 7+
5 Stars (1 customer reviews)

Fiery Mood Ring

Are they mad, sad, or glad? Maybe you'll find out when you check out the mood ring you got them!

Item#: 13347 Age: 6+
5 Stars (6 customer reviews)

Chrysocolla - Bulk Mineral

Unique rock to add to your rock collection!

Item#: 11203 Age: 7+
5 Stars (3 customer reviews)

Sandstone - Bulk Mineral

One of the most essential rocks for study of geology.

Item#: 10978 Age: 7+
5 Stars (1 customer reviews)

Gypsum Rosettes - Bulk Mineral

Beautiful gypsum rosettes or desert roses. Great for geology study.

Item#: 10975 Age: 7+

Agate Slab - Small Blue

Awesome rock to show your students when teaching geology!

Item#: 11205 Age: 7+
5 Stars (1 customer reviews)

Rose Quartz - Bulk Mineral

Pretty rock for a special loved one!

Item#: 11200 Age: 7+

Orange Calcite - Bulk Mineral

Beautiful rock to add to your rock collection!

Item#: 11199 Age: 7+

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+
5 Stars (3 customer reviews)

Amazonite - Bulk Mineral

Unique rock to add to your rock collection!

Item#: 11197 Age: 7+

Star Mica - Bulk Mineral

Your eyes will be “starry-eyed” when you see this cool mineral!

Item#: 11201 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+

Fluorite - Bulk Mineral

A MUST-HAVE for the rock collector in your family!

Item#: 12300 Age: 8+

Glow-in-the-Dark Rock

This glow-in-the-dark rock makes a great party favor!

Item#: 14633 Age: 8+

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+

Magic Eggs

These mysterious glass eggs exhibits a magical iridescence and are excellent teaching tools for demonstrating dispersion of light!

Item#: 16392 Age: 7+
4 Stars (2 customer reviews)

Selenite - Bulk Mineral

An essential mineral to add to any mineral collection!

Item#: 13343 Age: 7+

Emerald Quartz - Bulk Mineral

This emerald quartz specimen is a great addition to any rock collection!

Item#: 14257 Age: 7+
5 Stars (1 customer reviews)

GeoCentral Igneous Rock Science Kit

Uncover the mysteries of igneous rocks with this fascinating kit!

Item#: 14161 Age: 8+
5 Stars (1 customer reviews)

Garnet - Bulk Mineral

This garnet specimen is a great addition to any rock collection!

Item#: 14260 Age: 7+

GeoCentral Sedimentary Rock Science Kit

Uncover the mysteries of sedimentary rocks with this fascinating kit!

Item#: 14159 Age: 8+
4 Stars (1 customer reviews)

GeoCentral Minerals Science Kit

Learn where minerals are commonly found using this awesome kit!

Item#: 14261 Age: 8+
5 Stars (3 customer reviews)

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+

GeoCentral Rock Science Kit

This is a great beginner's rock science kit!

Item#: 14777 Age: 8+

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+

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+

Lava In a Bottle

Perform a fun science experiment that creates a miniature lava lamp in a plastic beaker using water, oil, and chemical reactions!

Item#: 16391 Age: 8+

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xUmp.com Catalog

CATALOG

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At xUmp.com, we are passionate about science. We believe in hands-on learning and making science fun. - Anton Skorucak, Physicist and Founder

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.