Bulk Rocks & Gems
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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)
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)
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+
Gypsum Rosettes - Bulk Mineral
Beautiful gypsum rosettes or desert roses. Great for geology study.
Item#: 10975 Age: 7+
Citrine Points - Bulk Mineral
Neat rock for the geology fanatic in your family!
Item#: 11206 Age: 7+
Amethyst - Bulk Mineral
This beautiful mineral is actually quartz with iron impurities!
Item#: 10973 Age: 7+
(1 customer reviews)
Sandstone - Bulk Mineral
One of the most essential rocks for study of geology.
Item#: 10978 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+
Emerald Quartz - Bulk Mineral
This emerald quartz specimen is a great addition to any rock collection!
Item#: 14257 Age: 7+
(1 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)
Quartz - Tumbled Bulk Mineral
Great tumbled quartz piece to add to any rock collection!
Item#: 13661 Age: 7+
Quartzite Chunks - Pack of 10
Quartzite is a hard, non-foliated metamorphic rock which was originally pure quartz sandstone.
Item#: 17308 Age: 14+
Banded Sandstone Chunks - Pack of 10
Sandstone is a clastic sedimentary rock composed mainly of sand-sized silicate grains.
Item#: 17288 Age: 14+
Quartz Chalcedony Chunks - Pack of 10
You will get a set of ten Quartz chalcedony chunks approximately 1 inch in size.
Item#: 17304 Age: 14+
Pink Dolomite Chunks - Pack of 10
The Dolomites are sedimentary carbonate rocks composed mainly of the mineral dolomite. A high manganese content gives the crystals a rosy pink color.
Item#: 17306 Age: 14+
Calcite Cleavages - Pack of 10
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate.
Item#: 17307 Age: 14+
Snowflake Obsidian Chunks - Pack of 10
You will get a set of ten Snowflake Obsidian rocks approximately 1 inch in size.
Item#: 17289 Age: 14+
