Rock And Gem Identification Guide

Marble containing hematite is red.

Rock and gem identification guide.

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. Printable tumbled stone identification chart. Magnetite is sometimes called lodestone. Impurities may cause the marbel to be green red blue yellow etc.

It has a hardness of 3 4. Gemstones in the rough look more like rocks than the polished stones used in jewelry. Rock identification guide complete with photos and information about each rock s distinguishing characteristics this rock identification guide has been designed to assist you in identifying the rocks provided in the deeper and deeper and mining matters ii kits. 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.

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. Interactive guide to hundreds of rocks and minerals. If your specimen is a rock you will need to identify the individual minerals that compose it by following the mineral identification guide below. Our mining rough contains gems and minerals that were mined in countries as far away as brazil peru mexico india and madagascar.

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. Anyone interested in seeking out and identifying rough gemstones should start by buying an illustrated guide or looking up images online of rough gemstones. The colors of marble vary depending on the impurities within the marble. Marble is a crystalline rock composed predominantly of calcite dolomite or serpentine minerals.

It is strongly magnetic. It was used by the ancient chinese to make the first magnetic compasses. Hematite is one of the most prevalent and useful forms of iron on our planet. It is a common iron ore and is often used in jewelry and other decorative items.

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. An interactive reference guide to rocks minerals and gemstones. The mineral and gemstone kingdom is a free informational and educational guide to rocks minerals gemstones and jewelry. Rock identification chart once you ve determined what type of rock you ve got look closely at its color and composition.