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All About Macrocrystalline Quartz-Part 2 Inclusions, Sheen, Phenomena - (Post)
Quartz can have several phenomena including phantom crystals, rainbows or asterism (star effect). In Part 1 of my All About Macrocrystalline Quartz series we discussed the basics of Macrocrystalline ...
Rockhounding Rules - (Page)What are the rules or laws for Rockhounding? Rockhounding is the term used to describe people who rock hunt, or collect rocks for fun. Though it use to be easy to just go out and collect rock ...
Rhodochrosite - (Page)Rhodochrosite is a gorgeous gemmy pink stone mostly from Argentina. Rhodochrosite actually formed in the Inca silver mines after they were abandoned in the thirteenth century. These magnificent pi ...
Fluorite - (Page)Fluorite is a calcium fluoride crystal with a hardness of 4. Fluorite has a perfect cleavage (meaning it will break easily along a flat plane). It forms in massive, cubes, or isometric crystals a ...
About Us - (Page)OakRocks (aka Barlow's Gems) Located in Phoenix, AZ USA 602-571-9287 oakrocks@msn.com We have been in the gem and mineral business for over 40 years. We have sold on eBay since 20 ...
Copper Gemstones - (Page)Copper Gemstones are stones that contain Native Copper or copper minerals. Thirteen metals occur as native elements. Obviously gold and silver are the most well known, but Native Copper ...
Ruby and Fuchsite (or Zoisite) - (Page)Ruby and Fuchsite and Ruby and Zoisite are both lovely green stones with actual pink Ruby crystals. Ruby is the red variety of corundum, the second hardest natural mineral known to manki ...
Pyrite - (Page)Pyrite is the classic "Fool's Gold". There are other shiny brassy yellow minerals, but Pyrite is by far the most common and the most often mistaken for gold. Whether it is the golden look or so ...
Malachite - (Page)Malachite, a beautifully patterned green mineral, is a copper carbonate or a copper ore. It has a hardness between 3.5 and 4. Malachite crystallizes in the monoclinic crystal system, and most of ...
Rhodonite - (Page)Rhodonite is pink semiprecious stone, that is a metamorphic manganese metasilicate with a hardness of 5.5 to 6.5. The black dendritic inclusions are manganese oxide. It may also have white inclus ...
Labradorite - (Page)Labradorite has an uninteresting color of dark gray, but displays a beautiful iridescence. The iridescence displays rainbow-colored reflections known as labradorescence when light hits it in ...
Calcite, Aragonite, Dolomite, Marble - (Page)After Quartz, Calcite is the most next common mineral on the face of the Earth. Calcite comprises about 4% by weight of the Earth's crust. It is found throughout the world in sedimentary, metamo ...