This particular stone is a piece of amethyst from brazil that i purchased some years ago. Faceting methodology consists of a cutting appropriate angles on the top and bottom of a gem crystal because b the faceting machine forms a right triangle that controls the stone s angle on the abrasive disk and 3 a faceter to hold the stone against the turning lap wheel and monitor progress in cutting the crown i e the top of the gem and the pavilion i e the bottom of the gem. Set the index to your first setting which is 2. The amethyst miners. The book is designed so that you can teach yourself to facet gemstones from scratch.
In this episode you ll see how to select some rough dopp the rough using high temperature wax and make a cylindrical preform. You are guided from the simplest to the more complex cuts chapter by chapter and step by step. Turn on the machine and water. A little on faceting a gemstone. Each chapter leads you through the basics of faceting and highlights the most important principles for the beginner.
The starting point for cutting a gem is of course the rough. Turn the gem and rub it again to make another facet. Gemstone faceting is the trick of the trade and requires years of practice to master. Your gemstone faceting machine will have an opening in the splashguard or a means to hold it out of the way while cutting the girdle. The manner in which a stone separates white light into its spectral colors is called dispersion and the visible display of dispersion is called fire.
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Different gem cuts require different lighting. To create 1 smooth facet on the gem hold it between your thumb and index finger. Combining an art form with strategic engineering the process of gemstone faceting is not one for the weak of heart. Too much white light causes glare on polished flat surfaces so diffused light works best with faceted stones. A step by step process by chris ralph.Firmly rub the gem back and forth across the area of sandpaper that has the water to smooth the surface. This will set you up. First introductory video by steve moriarty showing you how to precision facet a gemstone. This puts the gem parallel to the lap. Examine the amount and strength of this fire to help identify the stone.
Shine a penlight through the stone and examine the fire inside the stone. Now carefully lower the gem until it just touches the lap. Shine a penlight through the stone and examine the fire inside the stone. Firmly rub the gem back and forth across the area of sandpaper that has the water to smooth the surface. Different gem cuts require different lighting.
Now carefully lower the gem until it just touches the lap. The starting point for cutting a gem is of course the rough. In this episode you ll see how to select some rough dopp the rough using high temperature wax and make a cylindrical preform. This particular stone is a piece of amethyst from brazil that i purchased some years ago.
