Oftentimes ideal cuts are determined by the way light bounces off the crystalline structure of the stone. You can also use the arrow mark to sort in various orders.
Refractive index is the most important testing factor so the values given for these are published in ascending order.
Raw gemstone identification. A variety of methods exist to determine the density and organization of a gem s atoms. To identify a rough gemstone review its mineral qualities inspect its streak and examine its luster. Check with your state s department of mines and minerals to locate regions suitable for rockhounding in your area.
Some important gemstones are not here yet. It gets its name from the amazon river in brazil. You can find streak plates at your local hobby store or online.
Amazonite is an alkali feldspar mineral a potassium aluminum silicate. Considered as the birthstone for june along with pearl. Moonstone a type of feldspar with a pearly iridescence moonstone is the smooth and shiny variety of this mineral.
We are constantly working on expanding this list. To made gemstone identification easy. Lie the plate flat on a workbench table or desk so it s stable.
While not a foolproof method of identification some gemstones are more likely to be cut in certain ways. Identifying gemstones comes down to chemistry although a layperson may identify a gemstone by its color discerning a gemstone s true identity often involves analyzing its atomic structure. You can use below search bar to find the specific gemstone by typing it s gemstone name example corundum.
Interactive guide to the most popular gemstones. Our labradorite comes from the gemstone quality rich region in madagascar. The most common cut styles you will run across include faceted cabochon cameo bead and tumbled.
Guide to precious semi precious color gemstones. A streak test is a method used to find the color of a stone or mineral in powdered form. It may also be found in colorado india madagascar namibia and russia.
Gemselect s list of precious semi precious gemstones. A streak plate is a square of unglazed porcelain that has a rough surface you can use to help identify the gemstone. This stone can be found in white cream tan brown yellow and green shades.
Dec 28 2015 raw gemstone identification chart bing images. It has a hardness of 6 to 6 5 and has green or blue green triclinic prismatic crystals. With over 130 gem varieties our gemstone index will help you find the perfect colored stone for your jewelry crystal healing needs.
Each gemstone has its own particular set of qualities you can catalog to help you with identification.
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