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Photo of the Optical Calcite - Bulk Mineral

Optical Calcite - Bulk Mineral

How to demonstrate natural birefringence or image-doubling? Use this chunk of optical calcite.

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

Photo of the Amethyst - Bulk Mineral

Amethyst - Bulk Mineral

This beautiful mineral is actually quartz with iron impurities!

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

Photo of the Dig Into Rocks Booklet

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 (2 customer reviews)

Photo of the Quartz Point - Bulk Mineral

Quartz Point - Bulk Mineral

Neat Quartz points, made from one of the most abundant and most useful minerals on Earth.

Item#: 10970 Age: 7+

Photo of the Obsidian Arrowhead

Obsidian Arrowhead

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

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

Photo of the Fiery Mood Ring

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+
5 Stars (6 customer reviews)

Photo of the Sandstone - Bulk Mineral

Sandstone - Bulk Mineral

One of the most essential rocks for study of geology.

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

Photo of the Chrysocolla - Bulk Mineral

Chrysocolla - Bulk Mineral

This is a beautiful speciment of Chrysocolla rock. Makes a great addition to your school rock collection!

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

Photo of the Gypsum Rosettes - Bulk Mineral

Gypsum Rosettes - Bulk Mineral

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

Item#: 10975 Age: 7+

Photo of the Orange Calcite - Bulk Mineral

Orange Calcite - Bulk Mineral

Beautiful rock to add to your rock collection!

Item#: 11199 Age: 7+

Photo of the Rose Quartz - Bulk Mineral

Rose Quartz - Bulk Mineral

Pretty rock for a special loved one!

Item#: 11200 Age: 7+

Photo of the Chalcopyrite - Rough Bulk Mineral

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)

Photo of the Amazonite - Bulk Mineral

Amazonite - Bulk Mineral

Unique rock to add to your rock collection!

Item#: 11197 Age: 7+

Photo of the Rock and Mineral Excavation Mini Kit

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+

Photo of the Fossils Excavation Mini Kit

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+
5 Stars (1 customer reviews)

Photo of the Dig Into Fossils Booklet

Dig Into Fossils Booklet

Small booklet that gets you started in the world of fantastic fossils!

Item#: 13348 Age: 5+

Photo of the Citrine Points - Bulk Mineral

Citrine Points - Bulk Mineral

Neat rock for the geology fanatic in your family!

Item#: 11206 Age: 7+

Photo of the Fluorite - Bulk Mineral

Fluorite - Bulk Mineral

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

Item#: 12300 Age: 8+

Photo of the Glow-in-the-Dark Rock

Glow-in-the-Dark Rock

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

Item#: 14633 Age: 8+

Photo of the Petrified Wood - Bulk Mineral

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+

Photo of the Magic Sunset Eggs

Magic Sunset 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)

Photo of the Emerald Quartz - Bulk Mineral

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)

Photo of the Selenite - Bulk Mineral

Selenite - Bulk Mineral

An essential mineral to add to any mineral collection!

Item#: 13343 Age: 7+

Photo of the Dino Skeleton Excavation Dig Mini Kit

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+

Photo of the Quartz Cluster - Small

Quartz Cluster - Small

This small quartz cluster is a great addition to any rock collection!

Item#: 14635 Age: 8+

Photo of the Agate Bookends - Natural

Agate Bookends - Natural

A beautiful desk or bookshelf accessory for the reading fanatic in your family!

Item#: 13173 Age: 12+

Photo of the GeoCentral Rock Science Kit

GeoCentral Rock Science Kit

This is a great beginner's rock science kit!

Item#: 14777 Age: 8+

Photo of the Agate Bookends - Blue

Agate Bookends - Blue

A beautiful blue geological desk or bookshelf accessory for the reading fanatic in your family!

Item#: 13174 Age: 12+

Photo of the GeoCentral Fossils Science Kit

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+

Photo of the GeoCentral Crystals Science Kit

GeoCentral Crystals Science Kit

Learn about the fascinating multi-faceted world of crystals with this 12 specimen introductory kit!

Item#: 16390 Age: 8+

Photo of the Agate Bookends - Green

Agate Bookends - Green

A beautiful green geological desk or bookshelf accessory for the reading fanatic in your family!

Item#: 14602 Age: 12+

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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.