Rock And Gem Identification Guide

Anyone interested in seeking out and identifying rough gemstones should start by buying an illustrated guide or looking up images online of rough gemstones.

Rock and gem identification guide.

The colors of marble vary depending on the impurities within the marble. Magnetite is sometimes called lodestone. 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. Positive identification requires much more than looking at a photo.

It is a common iron ore and is often used in jewelry and other decorative items. Marble is a crystalline rock composed predominantly of calcite dolomite or serpentine minerals. Hematite is one of the most prevalent and useful forms of iron on our planet. It was used by the ancient chinese to make the first magnetic compasses.

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. It is strongly magnetic. Rock identification chart once you ve determined what type of rock you ve got look closely at its color and composition. 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.

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. An interactive reference guide to rocks minerals and gemstones. The chemical formula is fe 3 o 4.

Marble containing hematite is red. Our mining rough contains gems and minerals that were mined in countries as far away as brazil peru mexico india and madagascar. 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. Gemstones in the rough look more like rocks than the polished stones used in jewelry.

Printable tumbled stone identification chart. It has a hardness of 3 4. Impurities may cause the marbel to be green red blue yellow etc. The mineral and gemstone kingdom is a free informational and educational guide to rocks minerals gemstones and jewelry.