Cerussite 8. Chalcanthite 3. Chalcedony Chalcopyrite Charoite Chiastolite 6. Chlinochlore 3. Chrome Diopside 1. Chrysocolla Clearance Lots 3. Clinozoisite 3. Coronadite 1. Corundum 1. Covellite 4. Creedite 8. Crocoite 8.
Cyanotrichite 7. Dendritic Limestone 1. Descloizite 5. Diopside 1. Dioptase 8. Dolomite Dumortierite 6. Epidote Erythrite 4. Ethiopian Opal 8. Eudialyte Feldspar 2.
Fluorite Fuchsite Galena Garnets Geodes Goethite Grape Agate Halite 4. Hedenbergite 6. Hematite Hemimorphite Heulandite 8. Howlite 5. Ilvaite 5. Indigo Gabbro Jade Jarosite 1. Jasper K2 Granite 3. Kammererite 2. Kunzite 6. Kyanite 3. Labradorite Lamprophyllite 1.
Lapis Lazuli Larimar Lepidolite Libethenite 4. Libyan Desert Glass Tektite Magnetite 2. Malachite Marcasite 5. Mimetite Moonstone Muscovite 5. Native Copper Native Silver 9. Natrolite 1. Obsidian Opal Common Orpiment We have educational rock and mineral collections and some large display pieces for your coffee table. You'll also find some interesting specimens that may be hard to find where you live!
Below you will find some categories for common rocks and minerals. Start browsing or use the search box above to look for something that suits your specific interests.
Rocks have some of these characteristics. Rocks occur naturally and are solid at room temperatures, but they do not have a regular structure or a chemical formula. They are made up of minerals. Minerals are the building blocks of rocks. A cool-looking rock can be made up of many different minerals. Each mineral has a particular chemical makeup. While most minerals are compounds of two or more elements, some minerals are made up of a single element.
Gold, silver, and copper are called native elements and occur in nature in relatively pure form. Most minerals are compounds or mixtures of elements.
It is these compounds that make up the chemical formula and structure of minerals. For example, halite has the chemical formula is NaCl or sodium chloride. Each sodium atom is combined with one chlorine atom. The formula for Quartz is SiO2, silicon oxide. For every atom of silicone, there are two atoms of oxygen.
There are some minerals that we know of. Each one is unique with its own chemical formula. Most of these are very rare. There are only eight groups of minerals that are common. They are:. Geologists use these groups to organize and classify minerals. The single most important feature in any online sale is a detailed description about the specimen. Information about a specimen's size, properties, condition, and origin should all be available to the customer.
For example, benitoite is a rare barium titanium silicate mineral that has grown in popularity for its deep blue, purplish colors. Authentic specimens of benitoite are only found in the mines of San Benito County, California. Knowing where a specimen comes from can have a major influence over its described authenticity and price. Keep in mind that exceptionally fragile specimens may find it more challenging to ship, and the vendor may recommend that you pick it up in person.
Some vendors will go to various mineral shows, showing their collections in exhibits and galleries. Keep track of vendors who are hitting the road and inquire about picking up your specimens along their travels. The Arkenstone is flexible with bringing specimens for delivery at shows in Denver, Tucson, Munich, and even China!
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