Any author, television script writer, or producer may consult with the FBI about closed cases or our operations, services, or history. However, there is no requirement that they do so, and the FBI does not edit or approve their work. Some authors, television programs, or motion picture producers offer reasonably accurate presentations of our responsibilities, investigations, and procedures in their story lines, while others present their own interpretations or introduce fictional events, persons, or places for dramatic effect.
A gold refining process using Butyl Diglyme, is suitable for both large and small gold operations. High cost gold refining equipment is not necessary to extract gold, or refine gold using butyl diglyme. Extracting and separating gold in an inexpensive glass separatory funnel is one option. Gold purification of 99.9% is obtainable from this gold refining, purification process.
Colored gold alloys. When two metals are dissolved in each other (as is the case with alloys), the color is often a mixture of the two. For example, copper dissolved in gold changes the color from a yellow-gold to a red-gold.Silver dissolved in gold creates a green-gold color.White gold contains palladium and silver. The color of gold jewelry can be attributed to the addition of different amounts of several metals (such as copper, silver, zinc, and so on).he addition of aluminum to gold creates a brittle purple gold. Purple gold used in a pin, and a purple gold inlay within a yellow gold ring. When indium or gallium is added to gold, a blue color can result. The cause of color in these intermetallics is different than that of yellow gold.