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Bulk Rocks & Gems

Pyrite - Fools Gold - Bulk Mineral

Pyrite is one of the coolest metallic minerals out there.

Item#: 10971 Age: 7+
5 star rating (2 customer reviews)

Optical Calcite - Bulk Mineral

Great image-doubling optical calcite!

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

Amethyst - Bulk Mineral

This beautiful mineral is actually quartz with iron impurities!

Item#: 10973 Age: 7+
5 star rating (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+

Obsidian Arrowhead

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

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

Chrysocolla - Bulk Mineral

Unique rock to add to your rock collection!

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

Sandstone - Bulk Mineral

One of the most essential rocks for study of geology.

Item#: 10978 Age: 7+
5 star rating (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 star rating (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 star rating (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+

Fluorite - Bulk Mineral

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

Item#: 12300 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+

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 star rating (1 customer reviews)

Garnet - Bulk Mineral

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

Item#: 14260 Age: 7+

Quartz - Tumbled Bulk Mineral

Great tumbled quartz piece to add to any rock collection!

Item#: 13661 Age: 7+

Pyrite Fools Gold - Large Chunk (2-3 inch)

An awesome pyrite specimen for any science classroom!

Item#: 16166 Age: 7+

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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.