Rock And Gem Identification Guide

The highest grade calcite marble is pure white.

Rock and gem identification guide.

Printable tumbled stone identification chart. Hematite is one of the most prevalent and useful forms of iron on our planet. Picture identification guide for polished stones and tumbled rocks these photos will give you some idea of what various stones look like but other types of stones can have a very similar appearance. The colors of marble vary depending on the impurities within the marble.

Our mining rough contains gems and minerals that were mined in countries as far away as brazil peru mexico india and madagascar. Marble containing hematite is red. An interactive reference guide to rocks minerals and gemstones. The chemical formula is fe 3 o 4.

Interactive guide to hundreds of rocks and minerals. Once you have identified the relative abundance of different minerals in your rock you can come see examples of common upstate rocks at the museum or you can refer to an online or other reference. Rock identification chart once you ve determined what type of rock you ve got look closely at its color and composition. It is strongly magnetic.

This site has been providing detailed information and photos of hundreds of mineral and gemstone since 1997 and is one of the leading education resources on minerals and gemstones. Impurities may cause the marbel to be green red blue yellow etc. It has a hardness of 3 4. If your specimen is a rock you will need to identify the individual minerals that compose it by following the mineral identification guide below.

Marble is a crystalline rock composed predominantly of calcite dolomite or serpentine minerals. Soft rock does not scratch steel but will scratch fingernails mohs scale of 3 to 5 5 while very soft rock won t even scratch fingernails mohs scale of 1 to 2. It is a common iron ore and is often used in jewelry and other decorative items. Follow this handy guide to learn more about your gems rocks minerals our gemstones and minerals traveled across the world to become a part of your collection.

Gemstones in the rough look more like rocks than the polished stones used in jewelry. The mineral and gemstone kingdom is a free informational and educational guide to rocks minerals gemstones and jewelry. Positive identification requires much more than looking at a photo. Anyone interested in seeking out and identifying rough gemstones should start by buying an illustrated guide or looking up images online of rough gemstones.