process raw stone

  • An Introduction to Gem Treatments - All About Gemstones

    The following glossary includes terms that are often used in the gem treatment nomenclature, and that you may encounter when shopping for gemstones. Finally, treatments for gemstones are constantly being changed and refined, and the detection of these new treated gems is an important part of ongoing gemological research.

  • Processing of stone, gravel and sand

    Processing of stone, gravel and sand Operational results of different type of machines and equipments in above mentioned spheres will help us to choose the right type of machine and equipment according to the given techni-cal parameters and customer's requirements.

  • How are Gems Cut and Polished?

    How are Gems Cut and Polished? Not required for EPS2 students. The process of cutting and polishing gems is called gemcutting or lapidary, while a person who cuts and polishes gems is called a gemcutter or a lapidary (sometimes lapidarist).. Gemstone material that has not been extensively cut and polished is referred to generally as rough.Rough material that has been lightly hammered to knock ...

  • How to Cut & Polish Opal Guide - Macs Opals

    During this slicing process, any excess material, cracks and potch, which is colourless opal, is cut off, and the piece of opal is cut into a basic stone shape. Once the opal stone has been made, as close to what is desired by the cutter as possible, it is now time to minimize waste and maximize the end size of the stone.

  • Heat Treatment - Gemstone Information - GemSelect

    Unadulterated stones can be harder to verify. However, there are some clues that can help. For example, gemologists can examine the inner workings of the stone and study the inclusions for signs of heat treatment. For example, if the stone has been treated, tiny inclusions such as small crystals will melt during the heat treatment process.

  • How hard is it to process raw gemstone material

    The raw stones undergo a cutting process to come to a fresh shiny gemstones. The edges are not determined as such and would depend on stone to stone and the cutting process.

  • Gemstone Cutting - Step by Step | PriceScope

    Oct 12, 2010 · I am often asked by clients, friends and family about how gemstones are faceted. I designed this photo pictorial to illustrate to the steps of the gemstone cutting process. The gemstone I selected for this first pictorial was a 13.3ct piece of rhodolite garnet from Africa. Due to the shape of the rough, I chose [.]

  • RockTumbler: Everything you need for rock tumbling :-)

    We are the internet's most popular source of information about rock tumbling. We also sell rock tumblers, tumbling rough, tumbling supplies, and tumbled stones from around the world.

  • How to Identify Rough Gem Stones | Sciencing

    Mar 13, 2018 · Gemstones in the rough look more like rocks than the polished stones used in jewelry. Anyone interested in seeking out and identifying rough gemstones, should start by buying an illustrated guide or looking up images online of rough gemstones.

  • How to Polish Stones: 13 Steps (with Pictures) - wikiHow

    Mar 29, 2019 · A tumbler polishes stones by using the same principles; instead of sandpaper, you will need to add successively finer "tumbler grit" to the tumbler (while the rocks are in the barrel). Although using a tumbler takes much less physical work than polishing by hand, the process takes substantial amounts of time.